NHIE (National Home Inspector Examination) — Questions and Answers

Question 1: An inspector finds gray plastic pipe used for supply lines throughout a 1990s home. What is the significance?

The pipe color indicates a reclaimed water system
Gray plastic supply pipe is a modern improvement over copper
Gray pipe indicates the use of CPVC, which is the preferred supply material
This is likely polybutylene (PB) pipe, which is prone to failure and was the subject of a class-action settlement (Correct answer)

Correct answer: This is likely polybutylene (PB) pipe, which is prone to failure and was the subject of a class-action settlement

Polybutylene pipe, common in homes built 1978–1995, has a history of fitting and pipe failures and should be noted as a material of concern.

Question 2: What is parallel structure in writing?

Using the same words repeatedly
Using the same grammatical form for similar ideas in a series (Correct answer)
Writing sentences of equal length
Starting every paragraph the same way

Correct answer: Using the same grammatical form for similar ideas in a series

Parallel structure means expressing similar ideas using consistent grammatical patterns for clarity and rhythm.

Question 3: A home inspector notices that handrail ends on an open stairway terminate abruptly in mid-air. This is a deficiency because:

Open ends create a catch hazard for clothing and body parts (Correct answer)
The handrail height is non-compliant
The material is not an approved graspable profile
Handrails must return to the wall on both ends

Correct answer: Open ends create a catch hazard for clothing and body parts

Handrail ends that do not return to the wall or post create a catch hazard where sleeves or body parts can become snagged, causing falls.

Question 4: What is a thesis statement?

The bibliography
The first sentence of any paragraph
A quotation from a source
The main argument or claim of an essay (Correct answer)

Correct answer: The main argument or claim of an essay

A thesis statement presents the central argument that the entire essay supports and develops.

Question 5: Which type of flashing is MOST critical at the intersection of a roof plane and a vertical wall, such as a dormer sidewall?

Caulk applied along the joint between surfaces
A single continuous piece of aluminum flashing
Counter flashing embedded in the siding only
Step flashing integrated with each course of shingles (Correct answer)

Correct answer: Step flashing integrated with each course of shingles

Step flashing, installed one piece per shingle course, sheds water at each step rather than relying on a single seal that can fail.

Question 6: A home inspector tests a shower and finds the water temperature reaches 130°F when the hot is fully open. What should be recommended?

A thermostatic mixing valve or anti-scald device should be installed or adjusted to limit temperature (Correct answer)
This is normal for a shower and requires no action
The pressure-reducing valve should be replaced immediately
The water heater anode rod should be replaced

Correct answer: A thermostatic mixing valve or anti-scald device should be installed or adjusted to limit temperature

Shower water exceeding 120°F creates a scalding hazard; a thermostatic mixing valve or adjusting the water heater thermostat is the appropriate correction.

Question 7: A home inspector finds dryer-like insulation in an attic that appears to be loose-fill material. A key field indicator that it may be vermiculite is:

Black granules with a tar-like odor
Brown color with a papery consistency
Pebble-like, shiny, accordion-shaped particles that are grey-silver (Correct answer)
White color and fibrous texture

Correct answer: Pebble-like, shiny, accordion-shaped particles that are grey-silver

Vermiculite insulation has a distinctive accordion or worm-like expanded particle shape with a grey-silver or gold-brown sheen, distinguishing it from cellulose or fiberglass.

Question 8: An inspector observes that a deck ledger is attached directly to the rim joist with no flashing. The primary concern is:

Water intrusion causing rot at the ledger-to-house connection (Correct answer)
Deck overloading the floor joists
Thermal bridging through the rim joist
Inadequate fastener shear strength

Correct answer: Water intrusion causing rot at the ledger-to-house connection

Without proper flashing, water is trapped between the ledger and the house rim joist, leading to wood rot, fastener corrosion, and potentially catastrophic deck collapse.

Question 9: Which of the following would indicate improper combustion air supply to a gas furnace installed in a confined space?

Supply air temperature above 140°F
Flame rollout, soot deposits around the burner area, or repeated limit switch tripping (Correct answer)
Flue pipe temperature above 300°F
Condensate forming on the vent connector

Correct answer: Flame rollout, soot deposits around the burner area, or repeated limit switch tripping

Flame rollout, soot staining around the burner compartment, and nuisance limit switch trips are classic signs of insufficient combustion air, causing incomplete and unstable combustion.

Question 10: What is the minimum required width for a residential hallway per the IRC?

28 inches
36 inches (Correct answer)
42 inches
32 inches

Correct answer: 36 inches

The IRC requires a minimum clear width of 36 inches for hallways to allow safe egress and accessibility.

Question 11: Which of the following materials is most likely to contain asbestos in a home built before 1980?

Cement siding
Popcorn ceiling texture (Correct answer)
Vinyl flooring installed in 2010
Fiberglass insulation

Correct answer: Popcorn ceiling texture

Popcorn ceiling texture, especially in homes built before the 1980s, is a common material known to contain asbestos. Asbestos was widely used in building materials for its fire-retardant and insulating properties. While other materials might also contain asbestos, popcorn ceilings are a particularly well-known example that inspectors should be aware of.

Question 12: What is the purpose of a P-trap in a plumbing drain system?

Hold water to block sewer gases from entering the home (Correct answer)
Regulate water pressure in the drain
Prevent backflow from the water main
Filter debris before it reaches the drain line

Correct answer: Hold water to block sewer gases from entering the home

A P-trap retains a small amount of water that acts as a seal, preventing sewer gases from passing through the drain and entering the living space.

Question 13: What is the minimum required headroom clearance above a stairway per the IRC?

6 feet 8 inches (Correct answer)
6 feet 4 inches
6 feet 0 inches
6 feet 6 inches

Correct answer: 6 feet 8 inches

The IRC requires a minimum of 6 feet 8 inches of headroom measured vertically from the stair nosing to any obstruction above.

Question 14: What is the MOST common cause of paint failure (peeling or bubbling) on exterior wood siding?

Moisture migrating from inside the building through the wall and pushing the paint off (Correct answer)
Use of an exterior-grade latex paint instead of oil-based primer
Painting the siding in direct sunlight on a hot day
Application of too many coats of paint over the original layer

Correct answer: Moisture migrating from inside the building through the wall and pushing the paint off

Interior moisture vapor that passes through the wall assembly can condense behind the paint film and cause it to peel away from the substrate.

Question 15: What occurs when warm moist interior air contacts a cold surface and releases moisture?

Condensation at the dew point (Correct answer)
Thermal bypass
Air infiltration
Vapor diffusion

Correct answer: Condensation at the dew point

Condensation occurs when air is cooled to its dew point temperature, causing water vapor to change phase to liquid water on the cold surface.

Question 16: An inspector finds that the attic insulation covers the eave vents. The most likely consequence is:

Blocked ventilation causing moisture buildup and potential ice dams (Correct answer)
Reduced R-value of the insulation
Increased fire risk from insulation contact with wood
Pest entry through the blocked vent openings

Correct answer: Blocked ventilation causing moisture buildup and potential ice dams

Blocked soffit vents prevent outside air from entering the attic, interrupting the ventilation path that removes heat and moisture and helps prevent ice dams in cold climates.

Question 17: During an exterior evaluation, an inspector notices that the garage floor slab slopes toward the interior rather than toward the garage door opening. What should be reported?

The slope is a minor cosmetic issue with no functional consequence
Only report this condition if active water staining is present
Water and vehicle drip will pool inside the garage and may migrate into the house (Correct answer)
The slab must be replaced immediately as it violates structural codes

Correct answer: Water and vehicle drip will pool inside the garage and may migrate into the house

A garage floor sloped toward the interior traps water, increasing moisture, corrosion, and the risk of water entry into the adjacent living space.

Question 18: What is the maximum number of circuits allowed on a 200-amp residential service panel?

40 circuits
60 circuits
The number depends on the panel's listed capacity, not amperage (Correct answer)
42 circuits

Correct answer: The number depends on the panel's listed capacity, not amperage

The maximum number of circuits is determined by the panel's UL listing and physical space, not solely by the amperage rating.

Question 19: What type of roof covering requires a minimum slope of 4:12 for proper installation?

Modified bitumen
EPDM membrane
Three-tab asphalt shingles (Correct answer)
Standing seam metal panels

Correct answer: Three-tab asphalt shingles

Standard three-tab asphalt shingles require a minimum roof slope of 4:12 to ensure proper water shedding and prevent moisture infiltration.

Question 20: What is the purpose of a backwater valve installed in a drain line?

To prevent municipal sewer water from backing up into the home during flooding (Correct answer)
To increase water pressure to upper floors
To allow cleanout access for drain snaking
To regulate hot and cold water mixing temperatures

Correct answer: To prevent municipal sewer water from backing up into the home during flooding

A backwater valve (check valve) allows drain flow in one direction only, preventing sewage from backing up into the home when the municipal sewer is overwhelmed.

Question 21: What is the function of a TPR (temperature-pressure relief) valve on a water heater?

Regulate water temperature during normal use
Control the flow rate to fixtures
Release pressure and prevent explosion if temperature or pressure exceeds safe limits (Correct answer)
Prevent backflow into the cold water supply

Correct answer: Release pressure and prevent explosion if temperature or pressure exceeds safe limits

The TPR valve is a safety device that automatically opens to discharge water when temperature exceeds 210°F or pressure exceeds 150 psi, preventing tank rupture or explosion.

Question 22: A home inspector finds spray-applied fireproofing on structural steel beams in a 1960s building. The correct recommendation is:

Remove all fireproofing immediately as it is asbestos
Seal the material with encapsulant paint
Document the finding as non-hazardous because it is above occupied space
Do not disturb the material and recommend sampling by a certified industrial hygienist (Correct answer)

Correct answer: Do not disturb the material and recommend sampling by a certified industrial hygienist

Spray-applied fireproofing from that era is often asbestos-containing and must be sampled by a qualified professional before any determination or disturbance.

Question 23: What is the purpose of a weep screed at the base of an exterior stucco wall?

Allow moisture trapped behind the stucco to drain out (Correct answer)
Anchor the stucco lath to the foundation
Prevent termites from entering the wall cavity
Provide a decorative base trim for the stucco

Correct answer: Allow moisture trapped behind the stucco to drain out

A weep screed has small openings that allow any water that infiltrates behind the stucco cladding to drain out at the base rather than accumulate and cause damage.

Question 24: When an inspector observes evidence of a past repair to a structural component, the most appropriate report language is:

Previous repair work is noted; evaluation by a licensed structural engineer is recommended to confirm adequacy (Correct answer)
Ignore it since the repair has already been made
Describe the original defect without mentioning the repair
The repair was done correctly and no further action is needed

Correct answer: Previous repair work is noted; evaluation by a licensed structural engineer is recommended to confirm adequacy

Past repairs should be documented and evaluated for adequacy; a structural engineer can confirm whether the repair is sufficient.

Question 25: What is the minimum recommended clearance between the bottom of floor joists and the ground in a crawl space?

18 inches (Correct answer)
6 inches
12 inches
24 inches

Correct answer: 18 inches

IRC and most standards require at least 18 inches of clearance between the bottom of floor joists and the ground in a crawl space to allow for inspection and ventilation.

Question 26: How should an inspector handle the discovery of an active water leak during an inspection?

Document the deficiency and notify the client immediately of the condition (Correct answer)
Skip the remaining plumbing inspection to avoid liability
Contact a plumber before finishing the inspection
Attempt to stop the leak using available shutoff valves

Correct answer: Document the deficiency and notify the client immediately of the condition

The inspector documents active leaks and informs the client; controlling or repairing systems is outside the inspection scope.

Question 27: A home inspector observes a floor tile that is soft, dimpled, and 9x9 inches in a home built in 1958. The appropriate action is to:

Note the tile as presumed asbestos-containing material and recommend testing before disturbance (Correct answer)
Report that the tile is safe because it is intact
Remove a sample for lab testing immediately
Advise the client to scrape and replace tiles promptly

Correct answer: Note the tile as presumed asbestos-containing material and recommend testing before disturbance

9x9 inch resilient floor tiles from that era are presumed ACM; they should be noted and undisturbed until tested or handled by a qualified abatement professional.

Question 28: When inspecting a chimney, what does efflorescence on the exterior masonry indicate?

Water is migrating through the masonry and depositing minerals on the surface (Correct answer)
The mortar joints are properly sealed
Structural failure of the chimney cap
The flashing has failed completely

Correct answer: Water is migrating through the masonry and depositing minerals on the surface

Efflorescence is the white mineral deposit left behind as water evaporates after passing through masonry, indicating ongoing water infiltration.

Question 29: A home inspector observes that the bottom course of wood siding is within 2 inches of the soil grade. What is the PRIMARY concern?

Reduced curb appeal of the home
Poor drainage from the roof system
Violation of setback requirements
Moisture and pest damage to the siding and framing (Correct answer)

Correct answer: Moisture and pest damage to the siding and framing

Wood siding close to soil grade is highly susceptible to moisture absorption and wood-destroying organism infestation.

Question 30: What is the minimum slope required for a horizontal drain pipe of 3 inches or less in diameter?

1 inch per foot
1/4 inch per foot (Correct answer)
1/8 inch per foot
1/2 inch per foot

Correct answer: 1/4 inch per foot

Horizontal drain pipes 3 inches or less in diameter require a minimum slope of 1/4 inch per foot to ensure proper drainage.

Question 31: When inspecting a wood-framed floor system, what does excessive deflection under a live load most likely indicate?

The subfloor has absorbed moisture
Joists are properly sized and performing as expected
Bridging between joists is missing
Undersized joists, excessive span, or loss of section due to damage or notching (Correct answer)

Correct answer: Undersized joists, excessive span, or loss of section due to damage or notching

Excessive floor deflection (bounciness) typically means the joists are undersized for the span, have been weakened by notching or drilling, or are decayed.

Question 32: During a roof inspection, an inspector identifies three different roof coverings layered on top of each other. What is the primary concern?

Excessive weight load on the roof structure (Correct answer)
Aesthetic inconsistency affecting curb appeal
Warranty on the top layer is void
The roofing contractor used incompatible materials

Correct answer: Excessive weight load on the roof structure

Multiple roof layers add significant weight that can stress the underlying structure beyond design limits.

Question 33: An inspector observes a 60-amp disconnect for an air conditioning unit with 10 AWG wire. The unit's nameplate states a maximum overcurrent protection of 40 amps. What is the concern?

The overcurrent protection exceeds the equipment's nameplate maximum rating (Correct answer)
10 AWG wire requires at least a 70-amp disconnect
A disconnect is not required for air conditioning units under 5 tons
10 AWG wire is too small for any AC disconnect

Correct answer: The overcurrent protection exceeds the equipment's nameplate maximum rating

Overcurrent protection must not exceed the equipment's maximum listed rating to protect the appliance and wiring.

Question 34: Which type of inspection report format is most commonly recommended for home inspections?

Checklist-only with pass/fail ratings
Narrative-only with no images
Verbal report delivered on-site with no written documentation
Combination of checklists, narrative descriptions, and photographs (Correct answer)

Correct answer: Combination of checklists, narrative descriptions, and photographs

A combination report with checklists, narrative, and photos provides the clearest, most defensible documentation of findings.

Question 35: Which condition at a masonry chimney crown should be reported as a deficiency by a home inspector?

A crown that overhangs the chimney sides by 2 inches
The crown does not include a chimney cap over the flue
The crown is made of mortar rather than cast concrete
Cracks in the crown mortar that allow water to penetrate and damage the chimney below (Correct answer)

Correct answer: Cracks in the crown mortar that allow water to penetrate and damage the chimney below

Cracks in the chimney crown allow water to enter and accelerate deterioration of the masonry, flashing, and firebox below.

Question 36: How does documentation support quality in Structural Systems?

Documentation is unnecessary overhead
It is only for billing
It only serves administrative purposes
It creates records, ensures consistency, and enables improvement (Correct answer)

Correct answer: It creates records, ensures consistency, and enables improvement

Proper documentation creates accountability, ensures consistency, supports quality improvement, and provides legal protection.

Question 37: An inspector is asked by a client to re-inspect a property after repairs have been completed. The re-inspection should focus on:

A full new inspection of all systems and components
Only the items the contractor says were repaired
Verifying that the previously reported deficiencies have been corrected (Correct answer)
Any new defects that may have occurred since the original inspection

Correct answer: Verifying that the previously reported deficiencies have been corrected

A re-inspection is specifically focused on verifying correction of the deficiencies noted in the original inspection report.

Question 38: During an inspection, you find that the home's electrical panel is a Federal Pacific brand. What is your recommendation?

Ignore it if no immediate issues are found
Note it as a potential fire hazard and recommend further evaluation by an electrician (Correct answer)
Perform a full electrical load test
Replace the panel immediately

Correct answer: Note it as a potential fire hazard and recommend further evaluation by an electrician

Federal Pacific Electric (FPE) Stab-Lok panels are notorious for manufacturing defects that can prevent circuit breakers from tripping when overloaded, posing a significant fire hazard. As a home inspector, your role is to identify potential safety issues and recommend further evaluation by a qualified professional. Replacing the panel immediately or performing a full electrical load test falls outside the scope of a standard home inspection, and ignoring it would be irresponsible given the known risks.

Question 39: When inspecting a gas furnace, which condition would indicate a cracked heat exchanger?

Rust staining on the burner
Yellow pilot flame
Flame rollout when blower activates (Correct answer)
Soot deposits near the flue collar

Correct answer: Flame rollout when blower activates

Flame rollout when the blower turns on is a classic sign of a cracked heat exchanger, as combustion gases escape into the air distribution system.

Question 40: Which of the following best describes 'balloon framing'?

A lightweight steel framing system
Wall studs run continuously from foundation sill to roof plate across all floors (Correct answer)
Framing using large diameter round logs
Framing where each floor is a separate platform

Correct answer: Wall studs run continuously from foundation sill to roof plate across all floors

In balloon framing, wall studs run continuously from the sill plate to the top plate without interruption at intermediate floor levels.

Question 41: A client asks the inspector to omit a minor deficiency from the report to avoid complicating the sale. The inspector should:

Include the deficiency regardless, maintaining report accuracy and integrity (Correct answer)
Downgrade the deficiency to a maintenance note only
Omit the deficiency as a courtesy since it is minor
Charge an additional fee and then decide whether to include it

Correct answer: Include the deficiency regardless, maintaining report accuracy and integrity

Omitting or altering findings to influence a real estate transaction compromises the inspector's integrity and may violate ethics standards.

Question 42: What condition at the intersection of a skylight and the surrounding roof surface is MOST indicative of a potential leak?

The skylight frame is a different color than the surrounding roofing material
Visible gaps or deteriorated sealant at the curb-to-frame joint with no integrated flashing visible (Correct answer)
The skylight has a flat profile rather than a raised curb design
Condensation is visible on the interior glazing of the skylight

Correct answer: Visible gaps or deteriorated sealant at the curb-to-frame joint with no integrated flashing visible

Gaps or failed sealant at a skylight curb with no integrated flashing allows water to run directly under the roofing material and into the structure.

Question 43: What is the primary purpose of a vapor barrier installed on a crawl space floor?

To improve air circulation under the floor
To prevent pest infiltration
To reduce soil moisture from migrating into the crawl space (Correct answer)
To prevent structural damage from flooding

Correct answer: To reduce soil moisture from migrating into the crawl space

A ground cover vapor barrier reduces moisture evaporation from soil into the crawl space, preventing condensation and wood damage.

Question 44: Which type of pipe material is identified by its blue or blue-striped color?

CPVC
PEX-B cold water (Correct answer)
Polybutylene
ABS

Correct answer: PEX-B cold water

PEX tubing for cold water lines is typically blue, while red indicates hot water lines, helping installers and inspectors quickly identify the system.

Question 45: Under the NHIE Standards of Practice, which of the following is NOT a required component of a home inspection report?

Identification of material defects
The inspector's opinion of the property's market value (Correct answer)
Description of inspected systems and components
A list of all items inspected and not inspected

Correct answer: The inspector's opinion of the property's market value

Determining market value is the role of an appraiser, not a home inspector.

Question 46: What is the correct method to test whether a GFCI receptacle is functioning properly during a home inspection?

Measure voltage at the receptacle with a multimeter
Check that both the hot and neutral conductors are securely connected
Press the TEST button and verify the RESET button pops out, then press RESET to restore power (Correct answer)
Plug in a lamp and verify the circuit remains energized

Correct answer: Press the TEST button and verify the RESET button pops out, then press RESET to restore power

The TEST/RESET button procedure verifies the GFCI's internal tripping mechanism is operational.

Question 47: Lead paint on exterior trim is considered most hazardous to children when it is:

Intact and covered by newer paint layers
Chalking, chipping, or on friction surfaces that create dust (Correct answer)
Located above the height of 6 feet
Sealed with oil-based primer

Correct answer: Chalking, chipping, or on friction surfaces that create dust

Deteriorating or friction-surface lead paint generates dust and chips that are the primary pathway for childhood lead ingestion.

Question 48: During an interior inspection, the inspector tests a ceiling fan and finds it wobbles significantly. The inspector should:

Report it as a safety concern, noting the fan may not be secured to a fan-rated box (Correct answer)
Recommend balancing the blades as routine maintenance
Note it as minor and no action is required
Tighten the canopy screws and re-test

Correct answer: Report it as a safety concern, noting the fan may not be secured to a fan-rated box

Significant wobbling can indicate the fan is mounted to a standard electrical box not rated to support a fan's dynamic load, creating a fall hazard.

Question 49: Which radon mitigation system is most commonly installed in homes with a basement or slab-on-grade foundation?

Sub-slab depressurization (SSD) using a fan and PVC pipe through the slab (Correct answer)
Electrostatic precipitator in the HVAC return
Positive pressurization of the crawl space
Heat recovery ventilator (HRV) with carbon filtration

Correct answer: Sub-slab depressurization (SSD) using a fan and PVC pipe through the slab

Sub-slab depressurization creates negative pressure under the slab, drawing radon-laden soil gas out through a pipe before it can enter the home.

Question 50: Which handrail deficiency on exterior steps should a home inspector flag as a SAFETY concern?

A handrail that does not extend beyond the top riser by 12 inches
A handrail that is not graspable — such as a 2x4 laid flat on top of balusters (Correct answer)
A handrail that is painted rather than left in natural finish
A handrail made of pressure-treated lumber rather than metal

Correct answer: A handrail that is not graspable — such as a 2x4 laid flat on top of balusters

Handrails must be graspable in cross section; a flat 2x4 cannot be properly gripped and fails to provide the support needed to prevent falls.

Question 51: An inspector notices the main electrical panel has double-tapped breakers. What does this mean?

A breaker is installed upside down
A tandem breaker is used correctly
Two circuits share one breaker (Correct answer)
The panel is over-fused

Correct answer: Two circuits share one breaker

Double-tapping means two separate conductors are connected to a single breaker terminal, which is a defect unless the breaker is specifically rated for multiple conductors.

Question 52: Which study approach is most effective for Structural Systems material?

Studying for very long sessions without breaks
Passive re-reading of notes
Highlighting all text
Active recall with practice questions (Correct answer)

Correct answer: Active recall with practice questions

Active recall through practice questions is the most effective study method, as it strengthens memory retrieval pathways.

Question 53: What is the recommended minimum depth for a footing in a cold climate?

Below the frost line (Correct answer)
At least 24 inches below grade
12 inches below grade
At the level of undisturbed soil

Correct answer: Below the frost line

Footings must be placed below the local frost depth to prevent frost heave, which can shift the foundation and cause structural damage.

Question 54: A roof inspection reveals that counter flashing on a chimney is embedded in the mortar joint. The flashing is loose and pulling away. The correct repair method is:

Apply roofing caulk over the gap as a permanent repair
Overlap additional base flashing on top of the counter flashing
Replace the entire chimney flashing system with a rubber boot
Repack the mortar joint and re-seat the counter flashing (Correct answer)

Correct answer: Repack the mortar joint and re-seat the counter flashing

Counter flashing embedded in mortar joints must be re-pointed — the joint is cleaned out, the flashing re-seated, and new mortar packed to lock it in place.

Question 55: What is the purpose of a topic sentence?

To provide transitions only
To cite sources
To introduce the main idea of a paragraph (Correct answer)
To conclude an essay

Correct answer: To introduce the main idea of a paragraph

A topic sentence states the main point of its paragraph, letting readers know what the paragraph will be about.

Question 56: What is the purpose of an air gap at a dishwasher drain connection?

To reduce noise from the dishwasher pump
To prevent contaminated wastewater from siphoning back into the dishwasher and potable water supply (Correct answer)
To prevent hot steam from the dishwasher from entering the supply line
To allow air into the line to improve drain flow speed

Correct answer: To prevent contaminated wastewater from siphoning back into the dishwasher and potable water supply

An air gap physically separates the dishwasher drain from the drain system, preventing backflow of contaminated wastewater into the dishwasher or supply system.

Question 57: Which of the following is a sign of potential roof failure?

A slight dip in the roof over the garage
Minor algae growth on shingles
Properly aligned shingles with intact flashing
Granule loss exposing the asphalt layer (Correct answer)

Correct answer: Granule loss exposing the asphalt layer

Granule loss on asphalt shingles is a significant indicator of wear and potential roof failure. The granules protect the asphalt layer from damaging UV radiation and physical impact; once exposed, the asphalt deteriorates rapidly, leading to cracking, brittleness, and eventual leaks. This condition signals that the roof's protective capabilities are compromised and replacement may be necessary.

Question 58: Which product installed in homes between 1930 and 1978 poses the greatest friable asbestos hazard when HVAC ductwork is disturbed?

Copper refrigerant lines
Galvanized steel duct sections
Duct wrap insulation and flexible duct connectors containing chrysotile asbestos (Correct answer)
Fiberglass duct board installed after 1985

Correct answer: Duct wrap insulation and flexible duct connectors containing chrysotile asbestos

Flexible duct connectors and wrap insulation from that era frequently contained asbestos and become friable when disturbed, releasing airborne fibers.

Question 59: What is the primary health concern associated with exposure to vermiculite insulation in homes built before 1990?

Radon emission
Fiberglass irritation
Asbestos contamination from Libby, Montana mines (Correct answer)
Formaldehyde off-gassing

Correct answer: Asbestos contamination from Libby, Montana mines

Much of the vermiculite sold before 1990 came from Libby, Montana mines contaminated with asbestos-like tremolite fibers.

Question 60: According to NHIE Standards, which of the following is typically EXCLUDED from a standard home inspection?

Roof covering condition
Visible foundation cracks
Underground utilities (Correct answer)
HVAC filter condition

Correct answer: Underground utilities

Underground utilities are not visible and are therefore outside the scope of a standard non-invasive visual inspection.

Question 61: Which of the following is a key requirement for a home inspection report according to the Standards of Practice?

Guarantee of the home's condition
Inclusion of detailed repair costs
Inspection of all concealed systems
Identification of all major deficiencies (Correct answer)

Correct answer: Identification of all major deficiencies

A key requirement for a home inspection report, as per the Standards of Practice, is the clear identification of all major deficiencies observed during the inspection. The report's purpose is to inform the client about the significant issues affecting the home's safety, structural integrity, or major systems. It focuses on observable conditions rather than detailed repair costs or guarantees.

Question 62: Which of the following represents the correct order of information for a well-written deficiency entry?

Location → description of condition → potential consequence → recommendation (Correct answer)
Recommendation → location → cost estimate → description
Cost estimate → location → description → recommendation
Description → cost → photos → recommendation

Correct answer: Location → description of condition → potential consequence → recommendation

An effective deficiency entry identifies where the condition is, what was observed, why it matters, and what action is recommended.

Question 63: An inspector observes that an interior bearing wall has been partially removed without a beam. The most likely evidence of structural distress is:

Doors on adjacent walls that are difficult to open
Sagging ceiling joists and cracked finishes above the opening (Correct answer)
Squeaky floors on the level above
Drywall nail pops along the wall

Correct answer: Sagging ceiling joists and cracked finishes above the opening

Removing a bearing wall without installing an adequate beam transfers load unevenly, causing ceiling joists to deflect and finishes above to crack.

Question 64: What is the primary purpose of a vapor retarder installed on the warm side of insulation in a cold climate?

Slow the diffusion of indoor moisture into the wall cavity to prevent condensation (Correct answer)
Add structural reinforcement to the wall assembly
Reduce air infiltration by sealing gaps in framing
Provide a fire-resistant layer behind drywall

Correct answer: Slow the diffusion of indoor moisture into the wall cavity to prevent condensation

A vapor retarder on the warm-in-winter side of insulation slows moisture-laden indoor air from migrating into the cooler wall assembly where it could condense and cause damage.

Question 65: A home inspector observes that floor joists are notched at mid-span. What is the primary concern?

The notch reduces the joist's fire resistance
Notching at mid-span significantly reduces the joist's bending strength (Correct answer)
The notch creates a moisture trap
Notching is only a concern near bearing walls

Correct answer: Notching at mid-span significantly reduces the joist's bending strength

Notching floor joists at mid-span removes material at the zone of maximum bending stress, greatly reducing load-carrying capacity.

Question 66: A home inspector finds that a crawl space has wood posts sitting on soil without any footings. What is the primary structural concern?

Posts will absorb moisture through capillary action only
The posts will not be subject to decay without concrete contact
Inadequate bearing area will cause posts to sink as soil compresses under load (Correct answer)
This is acceptable if posts are pressure-treated

Correct answer: Inadequate bearing area will cause posts to sink as soil compresses under load

Posts without footings concentrate loads on a small soil area, causing settlement or differential movement as the soil compresses, which can distort the entire floor system.

Question 67: Which of the following household products most commonly contributes to elevated formaldehyde levels in a newly constructed home?

Fiberglass window frames
Copper plumbing fixtures
Pressed-wood products such as particleboard and MDF using urea-formaldehyde binders (Correct answer)
Concrete foundation walls

Correct answer: Pressed-wood products such as particleboard and MDF using urea-formaldehyde binders

Pressed-wood products bonded with urea-formaldehyde resins off-gas formaldehyde, especially when new, contributing significantly to indoor air quality problems.

Question 68: What condition causes 'cupping' in wood shakes or shingles?

Greater moisture absorption on the bottom face than the top (Correct answer)
Excessive UV exposure bleaching the top surface of the shake
Improper nailing that prevents the shake from lying flat
Thermal cycling causing the wood grain to separate

Correct answer: Greater moisture absorption on the bottom face than the top

Wood shingles cup when the underside absorbs more moisture than the exposed top, causing differential swelling that curls the edges upward.

Question 69: What is the minimum height above a residential garage floor for a receptacle outlet?

18 inches
There is no minimum height; standard placement applies (Correct answer)
48 inches to prevent contact with vehicles
12 inches

Correct answer: There is no minimum height; standard placement applies

NEC does not specify a minimum height for garage receptacles, though they must be GFCI-protected.

Question 70: During a roof inspection, the inspector notes the wood decking feels spongy underfoot near the eaves. This most likely indicates:

Inadequate nailing of the roof deck panels
Thermal expansion of OSB panels in summer heat
Rot from chronic moisture intrusion or ice damming (Correct answer)
Structural rafter spacing that is too wide

Correct answer: Rot from chronic moisture intrusion or ice damming

Spongy decking near eaves strongly suggests wood rot caused by repeated wetting from ice dams, inadequate ventilation, or long-term leak infiltration.

Question 71: How does documentation support quality in Exterior Evaluation?

It creates records, ensures consistency, and enables improvement (Correct answer)
It only serves administrative purposes
Documentation is unnecessary overhead
It is only for billing

Correct answer: It creates records, ensures consistency, and enables improvement

Proper documentation creates accountability, ensures consistency, supports quality improvement, and provides legal protection.

Question 72: A home inspector identifies copper supply pipes with a greenish-white crust on the outside of soldered joints. What does this indicate?

The pipe has been exposed to excessive water pressure
Active or past pinhole leaks or weeping at the solder joint (Correct answer)
Evidence of electrolytic corrosion from dissimilar metals only
Normal aging of copper pipe requiring no action

Correct answer: Active or past pinhole leaks or weeping at the solder joint

Greenish-white mineral deposits (verdigris) on copper pipe joints indicate moisture has escaped, signaling a pinhole leak or failing solder joint.

Question 73: When an inspector finds lead-based paint in a pre-1978 home, the required action is to:

Advise the buyer to repaint all surfaces immediately
Report the likelihood of lead-based paint and recommend evaluation by a certified lead inspector (Correct answer)
Require immediate abatement before the inspection is complete
Test all painted surfaces with an XRF analyzer

Correct answer: Report the likelihood of lead-based paint and recommend evaluation by a certified lead inspector

Home inspectors are not certified lead inspectors; the appropriate response is to note the risk in pre-1978 homes and refer to a certified professional for testing.

Question 74: An inspector observes a 240V circuit with both hot conductors protected by two separate single-pole breakers with a handle tie. What is the inspector's concern?

Single-pole breakers cannot interrupt 240V under any circumstances
This is a code violation; 240V circuits require a true double-pole breaker, not tied single-pole breakers (Correct answer)
This configuration is acceptable if both breakers are the same brand
Handle ties are acceptable only on 15-amp circuits

Correct answer: This is a code violation; 240V circuits require a true double-pole breaker, not tied single-pole breakers

A handle tie is not a substitute for a double-pole breaker because it does not guarantee simultaneous trip on an overcurrent event.

Question 75: The most significant long-term health risk from chronic low-level radon exposure is:

Liver cancer
Lung cancer, particularly in smokers (Correct answer)
Kidney failure
Bone marrow suppression

Correct answer: Lung cancer, particularly in smokers

Radon decay products emit alpha radiation in the lungs, and long-term exposure is the second leading cause of lung cancer in the US, especially in smokers.

Question 76: During an inspection, an inspector notes that a bathroom has no window and no exhaust fan. According to standard practice, this is deficient because:

No ventilation is required if the bathroom has a ceiling above 8 feet
Bathrooms must have both a window and a fan per IRC
All interior bathrooms must have a fan rated at 110 CFM minimum
Bathrooms require either natural ventilation via a window or mechanical exhaust to remove moisture and odors (Correct answer)

Correct answer: Bathrooms require either natural ventilation via a window or mechanical exhaust to remove moisture and odors

IRC requires bathrooms to have either an openable window providing natural ventilation or a mechanical exhaust fan; having neither is a code violation and a moisture management deficiency.

Question 77: A home inspector finds granule loss concentrated in streaks running down asphalt shingles. The most likely cause is:

Foot traffic damage from prior roof work (Correct answer)
Hail impact along the strike zone
Normal weathering from UV exposure
Manufacturer defect in granule adhesion

Correct answer: Foot traffic damage from prior roof work

Streaking granule loss typically follows foot traffic patterns where installers or maintenance workers have walked on the roof, abrading the granule surface.

Question 78: What does the term 'blown-in insulation' refer to?

Loose-fill insulation installed using air-powered pneumatic equipment (Correct answer)
Rigid insulation panels pressed into place during framing
Pre-formed insulation boards cut to fit wall cavities
Spray foam insulation applied under high pressure

Correct answer: Loose-fill insulation installed using air-powered pneumatic equipment

Blown-in (loose-fill) insulation such as cellulose or fiberglass is installed using pneumatic equipment that blows material into attic floors or wall cavities.

Question 79: What condition best describes 'fishmouthing' in asphalt shingles?

Horizontal cracking across a shingle tab from brittleness
Granule loss leaving bare asphalt exposed to UV
Upturned or cupped shingle tabs caused by differential drying (Correct answer)
Nail popping that raises the shingle surface

Correct answer: Upturned or cupped shingle tabs caused by differential drying

Fishmouthing occurs when the lower edge of a shingle tab curls upward, resembling an open mouth, due to differential moisture movement between shingle layers.

Question 80: Stair stringers that are cut too deeply can fail in which way?

Excessive deflection of treads
Delamination of wood layers
Splitting of the riser boards
Breakage at the notch due to inadequate remaining material (Correct answer)

Correct answer: Breakage at the notch due to inadequate remaining material

Over-cutting notches in a stair stringer leaves insufficient material in the remaining cross-section, causing the stringer to break at the notch under load.

Question 81: An interior door that swings open on its own most likely indicates:

The latch bolt is worn and does not engage the strike plate
The hinges are made of dissimilar metals causing corrosion
The door was cut too short at the bottom
The door is hung in an out-of-plumb frame (Correct answer)

Correct answer: The door is hung in an out-of-plumb frame

A door that swings open by itself is typically hung in a frame that is not plumb, causing the door to swing toward the low side under gravity.

Question 82: An inspector suspects a home has been 'staged' to conceal known defects. The ethical obligation of the inspector is to:

Report only what is visible and accessible at the time of inspection (Correct answer)
Refuse to inspect until all staging is removed
Inform the seller that staging is unethical
Assume defects exist and report them as confirmed findings

Correct answer: Report only what is visible and accessible at the time of inspection

Inspectors must report only what is observable and accessible — they cannot report assumed or speculative defects.

Question 83: Which study approach is most effective for Plumbing material?

Active recall with practice questions (Correct answer)
Highlighting all text
Studying for very long sessions without breaks
Passive re-reading of notes

Correct answer: Active recall with practice questions

Active recall through practice questions is the most effective study method, as it strengthens memory retrieval pathways.

Question 84: Under NHIE Standards, what is the inspector required to do if they observe a condition that poses an immediate safety hazard?

Refuse to complete the inspection until the hazard is corrected
Notify the local building department before completing the inspection
Note the hazard in the report and recommend immediate corrective action (Correct answer)
Fix the condition before completing the inspection

Correct answer: Note the hazard in the report and recommend immediate corrective action

Immediate safety hazards must be clearly identified in the report with a recommendation for prompt corrective action.

Question 85: How does documentation support quality in Electrical Systems?

It is only for billing
It creates records, ensures consistency, and enables improvement (Correct answer)
Documentation is unnecessary overhead
It only serves administrative purposes

Correct answer: It creates records, ensures consistency, and enables improvement

Proper documentation creates accountability, ensures consistency, supports quality improvement, and provides legal protection.

Question 86: Which of the following practices improves the legal defensibility of an inspection report?

Using clear, specific, factual language with supporting photos and consistent terminology (Correct answer)
Limiting the report to a single-page checklist
Using vague language to avoid specific claims
Documenting only verbal client requests and not written observations

Correct answer: Using clear, specific, factual language with supporting photos and consistent terminology

Clear, specific, factual documentation with photos creates an objective record that demonstrates professional thoroughness and accuracy.

Question 87: An inspector finds that the condensate drain line from an air handler terminates directly into the floor drain without a trap. What is the concern?

The drain line is too short
Sewer gases can migrate up through the drain line into the air handler and living space (Correct answer)
The drain line material may not be compatible with the floor drain
Floor drains are not approved for condensate disposal

Correct answer: Sewer gases can migrate up through the drain line into the air handler and living space

Without a P-trap on the condensate drain line, sewer gases can travel back through the drain and into the air handler, potentially contaminating indoor air quality.

Question 88: An inspector notes that a floor drain in a basement utility room has no visible water in the trap. What is the recommended correction?

Cap the drain permanently
Add a vent pipe to the drain
Install a new P-trap
Pour water into the drain to replenish the trap seal and prevent sewer gas entry (Correct answer)

Correct answer: Pour water into the drain to replenish the trap seal and prevent sewer gas entry

Infrequently used floor drains can lose their trap water seal through evaporation; pouring water into the drain restores the seal that blocks sewer gases.

Question 89: What is the difference between 'their,' 'there,' and 'they're'?

'Their' is possessive, 'there' is location, 'they're' is 'they are' (Correct answer)
'There' is possessive, 'their' is location
'They're' is past tense of 'they'
They all mean the same thing

Correct answer: 'Their' is possessive, 'there' is location, 'they're' is 'they are'

'Their' shows possession (their book), 'there' indicates location (over there), and 'they're' is a contraction of 'they are.'

Question 90: Which attic ventilation component uses a motor-driven fan to actively exhaust hot air?

Gable end vent
Power attic ventilator (PAV) (Correct answer)
Soffit vent
Ridge vent

Correct answer: Power attic ventilator (PAV)

Power attic ventilators use electrically powered fans to actively exhaust hot air from the attic, unlike passive vents that rely solely on natural convection.

Question 91: According to most home inspection standards, which of the following is outside the scope of a home inspection?

Evaluating the condition of visible plumbing
Checking the functionality of HVAC systems
Inspecting the roof for leaks
Testing for environmental hazards like radon (Correct answer)

Correct answer: Testing for environmental hazards like radon

According to most home inspection standards, testing for environmental hazards such as radon, asbestos, or lead paint is typically outside the scope of a standard visual home inspection. These specialized tests require specific equipment and certifications beyond the general home inspection. Inspectors usually recommend clients hire qualified specialists for such assessments.

Question 92: What does the term 'kickout flashing' refer to in roofing and waterproofing?

Step flashing installed at dormer sidewalls
A diverter flashing that redirects water away from a wall at the end of a roof-wall intersection (Correct answer)
Drip edge flashing at the eave
Flashing used at the ridge cap of a hip roof

Correct answer: A diverter flashing that redirects water away from a wall at the end of a roof-wall intersection

Kickout (diverter) flashing is installed at the bottom end of a roof-wall intersection to direct water away from the wall and into the gutter, preventing wall infiltration.

Question 93: In report writing, the phrase 'recommend monitoring' is most appropriate when:

A condition is stable but could change over time and should be watched (Correct answer)
A condition has already been repaired by the seller
A condition is dangerous and needs immediate repair
The inspector cannot identify the cause of a problem

Correct answer: A condition is stable but could change over time and should be watched

'Recommend monitoring' is used for stable conditions that may deteriorate and should be re-evaluated periodically.

Question 94: An inspection report lists a deficiency in the electrical panel. The inspector should recommend evaluation by:

The real estate agent
The mortgage lender's appraiser
A licensed electrician (Correct answer)
The homeowner, who can research online

Correct answer: A licensed electrician

Electrical deficiencies should be referred to a licensed electrician who has the qualifications to safely evaluate and correct the condition.

Question 95: What is the purpose of the main bonding jumper in a service panel?

It connects the panel enclosure to the grounding electrode
It provides a path for surge current to the utility transformer
It connects the neutral bar to the grounding bar in the main panel (Correct answer)
It separates the grounded and grounding conductors in subpanels

Correct answer: It connects the neutral bar to the grounding bar in the main panel

The main bonding jumper connects the neutral (grounded) conductor to the equipment grounding conductor at the service entrance.

Question 96: A home inspector observes an oil-fired boiler with the pressure gauge reading 30 PSI during operation. What should the inspector report?

This is low and indicates a system problem
This is normal operating pressure for a hot-water boiler
Pressure gauges on boilers are informational only and not a concern
This is high and potentially dangerous — normal operating pressure is 12-25 PSI (Correct answer)

Correct answer: This is high and potentially dangerous — normal operating pressure is 12-25 PSI

Hot-water boilers typically operate between 12-25 PSI; a reading of 30 PSI exceeds normal operating range and may indicate a failed pressure reducing valve or waterlogged expansion tank.

Question 97: Which of the following should an inspection report NOT include?

Inspector's professional opinion on the property's fair market value (Correct answer)
Location of observed deficiencies
Summary of significant findings
Recommendations for further evaluation by specialists

Correct answer: Inspector's professional opinion on the property's fair market value

Home inspectors are not appraisers; providing a market value opinion exceeds the scope of a home inspection report.

Question 98: Which condition indicates a sump pump system requires attention during a home inspection?

The discharge pipe terminates near the window well of the basement (Correct answer)
The pump activates when water is poured into the pit
The sump pit has a sealed lid with a vent
The sump pump discharges to the yard at least 6 feet from the foundation

Correct answer: The discharge pipe terminates near the window well of the basement

Discharging sump water near a window well or back toward the foundation defeats the purpose and can reintroduce water into the basement.

Question 99: A home inspector finds vermiculite insulation in an attic. What is the most appropriate recommendation?

Recommend testing by a qualified asbestos professional due to potential contamination (Correct answer)
Note it as adequate and recommend no action
Advise the homeowner to remove it immediately without testing
Report it as a modern high-performance insulation requiring no concern

Correct answer: Recommend testing by a qualified asbestos professional due to potential contamination

Much vermiculite, especially from the Libby, Montana mine, was contaminated with asbestos; inspectors should recommend evaluation and testing by a qualified asbestos professional.

Question 100: What is the correct interpretation of 'material defect' in a home inspection context?

Any item that does not meet current building code
A defect that requires replacement rather than repair
Any defect visible to the naked eye during inspection
A condition that significantly affects the value, safety, or habitability of the property (Correct answer)

Correct answer: A condition that significantly affects the value, safety, or habitability of the property

A material defect is one that has a significant adverse impact on value, safety, or habitability, not merely a cosmetic imperfection.

Question 101: When inspecting a crawl space, what minimum clearance is typically required for an inspector to enter?

18 inches
24 inches (Correct answer)
36 inches
12 inches

Correct answer: 24 inches

A minimum 24-inch clearance is generally required for safe crawl space entry during a home inspection.

Question 102: What does spalling on a brick exterior wall MOST commonly indicate?

Mortar joints were installed too wide
Water has penetrated the brick, frozen, and caused the face to break away (Correct answer)
The brick was improperly fired during manufacturing
The wall has inadequate foundation support

Correct answer: Water has penetrated the brick, frozen, and caused the face to break away

Spalling occurs when moisture inside brick freezes and expands, fracturing the outer face off — a sign of ongoing moisture infiltration.

Question 103: When inspecting a home with a private well, a home inspector should note that bacterial contamination is most commonly tested for using:

pH and hardness panels
Volatile organic compound analysis
Total coliform and E. coli analysis (Correct answer)
Heavy metals screening

Correct answer: Total coliform and E. coli analysis

Total coliform and E. coli tests are the standard indicators used to assess bacterial contamination in drinking water.

Question 104: A home inspector finds a Federal Pacific Electric (FPE) Stab-Lok panel. What should the report note?

FPE panels are only a concern if they show visible rust or corrosion
FPE Stab-Lok panels have documented breaker failure issues and are a safety concern requiring evaluation by an electrician (Correct answer)
FPE panels are outdated but function identically to modern panels
FPE panels must be replaced immediately per current NEC

Correct answer: FPE Stab-Lok panels have documented breaker failure issues and are a safety concern requiring evaluation by an electrician

FPE Stab-Lok breakers have documented failure-to-trip defects and are a recognized fire safety concern.

Question 105: A home inspector notices the crawl space has standing water and an earthy odor but no visible mold. The most important recommendation is:

Install a dehumidifier and consider the issue resolved
Seal all crawl space vents permanently
Address the source of moisture intrusion and improve drainage and ventilation to prevent mold development (Correct answer)
Apply antimicrobial spray to the ground vapor barrier

Correct answer: Address the source of moisture intrusion and improve drainage and ventilation to prevent mold development

Correcting the moisture source and improving drainage eliminates the condition that supports mold growth rather than masking or managing symptoms.

Question 106: What is the relationship between theory and practice in Structural Systems?

They are completely separate
Practice is unnecessary if you know theory
Theory is unnecessary
Theory provides the foundation; practice applies it to real situations (Correct answer)

Correct answer: Theory provides the foundation; practice applies it to real situations

Theory provides the conceptual foundation and principles, while practice involves applying those concepts to real-world situations. Both are essential for competence.

Question 107: What is the minimum number of receptacle outlets required on a kitchen countertop that is 24 inches wide and 4 feet long?

Three
Two (Correct answer)
None required for that size
One

Correct answer: Two

NEC requires that no point along a kitchen countertop be more than 24 inches from a receptacle outlet, so a 4-foot countertop requires at least two receptacles.

Question 108: Which of the following is the correct use of 'further evaluation recommended' in an inspection report?

Use it for every finding to protect against liability
Use it only for cosmetic issues
Use it as a substitute for describing the observed condition
Use it when a condition is beyond the inspector's scope or expertise to fully assess (Correct answer)

Correct answer: Use it when a condition is beyond the inspector's scope or expertise to fully assess

'Further evaluation recommended' is appropriate when a condition requires specialist knowledge or testing beyond the general inspector's scope.

Question 109: What is the primary purpose of professional certification in Plumbing?

To replace practical experience
To meet legal requirements only
To validate competency and knowledge in the field (Correct answer)
To increase salary automatically

Correct answer: To validate competency and knowledge in the field

Certification validates that a professional has met established standards of knowledge and competency in Plumbing.

Question 110: An inspector observes stair stringers on an exterior deck that are notched to accept the treads. What is the primary concern with this installation?

Treads installed on notched stringers always create a trip hazard
The wood species used for stringers cannot be notched regardless of depth
Notching reduces the effective depth of the stringer and may weaken it structurally (Correct answer)
Notched stringers are prohibited by all building codes nationwide

Correct answer: Notching reduces the effective depth of the stringer and may weaken it structurally

Deep notches in stair stringers reduce the net section depth, significantly weakening the member and creating a potential structural failure point.

Question 111: What is the recommended approach when an inspector cannot operate a heating system due to safety concerns, such as a gas odor?

Do not operate the system and note the safety concern prominently in the report (Correct answer)
Ventilate the area for 30 minutes then proceed with testing
Light the pilot manually to test the system
Operate it briefly and leave immediately after

Correct answer: Do not operate the system and note the safety concern prominently in the report

A gas odor is a safety hazard; the inspector should not operate the system and must clearly document the condition.

Question 112: What is the correct protocol when an inspector observes what appears to be mold during an inspection?

Disinfect the area and document that it was treated
Note the presence of suspected microbial growth and recommend further evaluation by a specialist (Correct answer)
Collect a sample and send it to a lab for analysis
Confirm it as mold and provide remediation cost estimates

Correct answer: Note the presence of suspected microbial growth and recommend further evaluation by a specialist

Inspectors note suspected microbial growth and recommend specialist evaluation; they do not test, confirm, or remediate.

Question 113: An inspector discovers evidence of past termite damage in the crawl space framing. What is the appropriate action?

Refuse to complete the inspection until pest clearance is provided
Document the damage, note whether it appears active or historic, and recommend evaluation by a pest control specialist (Correct answer)
Report only if the structural integrity appears compromised
Treat the area with insecticide and note it as resolved

Correct answer: Document the damage, note whether it appears active or historic, and recommend evaluation by a pest control specialist

Inspectors document visible evidence of wood-destroying insect damage and recommend specialist evaluation regardless of apparent activity.

Question 114: When should you use a semicolon?

To join two closely related independent clauses (Correct answer)
To end a question
To introduce a list
Before every conjunction

Correct answer: To join two closely related independent clauses

Semicolons connect two independent clauses that are closely related in meaning, without using a conjunction.

Question 115: An inspector notices that a past client has posted a negative online review that is factually inaccurate. According to the Code of Ethics, the inspector should:

Ignore all online reviews as outside professional scope
Publicly disclose confidential client information to refute the review
Threaten legal action to have the review removed
Respond professionally without disclosing confidential information (Correct answer)

Correct answer: Respond professionally without disclosing confidential information

Inspectors must maintain client confidentiality even when responding to unfair criticism.

Question 116: A home inspector finds a bathroom exhaust fan wired into the same circuit as the bathroom lighting. What should be noted?

This requires a GFCI breaker for the entire circuit
This is acceptable; bathroom fans may share the lighting circuit (Correct answer)
Bathroom fans must always be on a 20-amp circuit
This is a defect; bathroom fans must be on a dedicated circuit

Correct answer: This is acceptable; bathroom fans may share the lighting circuit

NEC permits bathroom exhaust fans to share the bathroom lighting circuit; only receptacles require a dedicated 20-amp bathroom circuit.

Question 117: Horizontal cracking in a masonry block foundation wall most commonly indicates:

Shrinkage during curing
Differential settlement
Lateral soil pressure exceeding wall capacity (Correct answer)
Thermal expansion

Correct answer: Lateral soil pressure exceeding wall capacity

Horizontal cracks in masonry foundation walls are typically caused by excessive lateral pressure from soil or hydrostatic forces pushing inward.

Question 118: Which condition would a home inspector identify as most structurally significant when examining wood floor joists?

Joists with splits running along the grain at mid-span (Correct answer)
Joists with a single coat of paint
Joists spaced 16 inches on center
Joists installed with crown up

Correct answer: Joists with splits running along the grain at mid-span

Longitudinal splits (checks) along the grain at mid-span reduce the effective depth of the joist and its bending capacity, representing a structural concern.

Question 119: Which of the following best describes the function of a king stud in door or window framing?

It is a full-height stud that runs from bottom plate to top plate alongside the trimmer stud (Correct answer)
It is used only in load-bearing walls
It is the horizontal member that spans the opening
It is a short stud that fills space above or below an opening

Correct answer: It is a full-height stud that runs from bottom plate to top plate alongside the trimmer stud

King studs are full-height studs nailed alongside trimmer (jack) studs at each side of an opening; they support the top plate and carry loads around the header.

Question 120: What type of foundation movement is characterized by one corner of the structure sinking while the rest remains stable?

Differential settlement (Correct answer)
Lateral displacement
Frost heave
Uniform settlement

Correct answer: Differential settlement

Differential settlement occurs when one part of a foundation sinks more than another, typically due to variable soil conditions, and causes diagonal cracking and structural distortion.

Question 121: A home inspector observes that a flat roof has a parapet wall with no scuppers or overflow drains. Why is this a concern?

If the primary drains clog, water can accumulate and structurally overload the roof (Correct answer)
Scuppers are required only for roofs larger than 2,500 square feet
The parapet will redirect wind-driven rain onto adjacent walls
Parapet walls are prohibited on flat roofs in most climates

Correct answer: If the primary drains clog, water can accumulate and structurally overload the roof

Without overflow scuppers, a clogged primary drain on a flat roof allows water to pond and accumulate weight that can collapse the roof structure.

Question 122: A home inspection report should be written so that it is understood by:

Other home inspectors reviewing the methodology
Only licensed contractors and tradespeople
The client, who may have no technical background (Correct answer)
Real estate attorneys reviewing for litigation

Correct answer: The client, who may have no technical background

Reports must use clear, plain language accessible to a non-technical client, as they are the primary audience.

Question 123: What is the correct installation sequence at the eave for asphalt shingles?

Drip edge, then starter course, then underlayment
Starter course, then drip edge, then underlayment
Drip edge, then underlayment, then starter course (Correct answer)
Underlayment, then drip edge, then starter course

Correct answer: Drip edge, then underlayment, then starter course

At the eave, drip edge is installed first on the bare deck, followed by underlayment lapped over the drip edge flange, then the starter strip shingles.

Question 124: What should an inspector do if a real estate agent offers a financial incentive to downplay defects in a home inspection report?

Refuse the incentive and report the defects honestly (Correct answer)
Accept the incentive to maintain good relations
Report the agent to the licensing board
Ignore the defects to avoid conflicts

Correct answer: Refuse the incentive and report the defects honestly

Home inspectors must maintain strict ethical standards and impartiality. Accepting financial incentives to downplay defects creates a severe conflict of interest and compromises the integrity of the inspection report. The inspector's duty is to provide an objective and honest assessment of the home's condition, so they must refuse such offers and report all findings truthfully.

Question 125: When inspecting a home, in what order should an inspector typically work through the exterior?

Begin at the roof and work downward to the foundation
Start at the rear and work counterclockwise to avoid retracing steps
Inspect in any order as long as all components are covered
Start at the front door and work clockwise around the perimeter (Correct answer)

Correct answer: Start at the front door and work clockwise around the perimeter

Working clockwise from the front door is a systematic approach that helps ensure no exterior area is missed.

Question 126: When inspecting interior walls, which condition most strongly indicates moisture intrusion behind the surface?

Nail pops in drywall
Hairline cracks at corners
Minor surface paint peeling
Efflorescence staining at the base (Correct answer)

Correct answer: Efflorescence staining at the base

Efflorescence (white mineral deposits) on interior walls indicates water is moving through the material, signaling active moisture intrusion.

Question 127: According to NHIE Standards, which of the following is considered a 'material defect'?

A condition that has a significant adverse impact on the value or safety of a property (Correct answer)
Any defect that the client specifically asks about
Any cosmetic imperfection noted during the inspection
Minor wear consistent with the age of the property

Correct answer: A condition that has a significant adverse impact on the value or safety of a property

A material defect significantly and adversely affects the property's value, safety, or habitability.

Question 128: The EPA action level for radon in indoor air that triggers mitigation is:

2 pCi/L
10 pCi/L
8 pCi/L
4 pCi/L (Correct answer)

Correct answer: 4 pCi/L

The EPA recommends mitigation when long-term radon levels in a home reach or exceed 4 picocuries per liter of air.

Question 129: What does AFUE stand for and what does it measure in a heating system?

Air Flow Unit Efficiency — measures airflow volume
Average Furnace Usage Estimate — measures run-time hours
Annual Fuel Utilization Efficiency — measures seasonal heating efficiency (Correct answer)
Adjusted Furnace Unit Emissions — measures combustion byproducts

Correct answer: Annual Fuel Utilization Efficiency — measures seasonal heating efficiency

AFUE (Annual Fuel Utilization Efficiency) is the ratio of annual heat output to total annual fossil fuel energy consumed, expressed as a percentage.

Question 130: Which roofing condition is most likely to cause ice dams to form?

Inadequate attic ventilation and insulation (Correct answer)
Excessive roof slope
Missing drip edge flashing
Worn granule surface on shingles

Correct answer: Inadequate attic ventilation and insulation

Poor attic insulation and ventilation allow heat to escape, melting snow that refreezes at the cold eave overhang, forming ice dams.

Question 131: During an exterior inspection, a home inspector notices that window sills are sloped toward the house rather than away from it. What should the inspector report?

A cosmetic issue requiring no further action
A sign that the windows were improperly manufactured
A deficiency that can direct water toward the window frame and wall cavity (Correct answer)
A code violation requiring immediate correction

Correct answer: A deficiency that can direct water toward the window frame and wall cavity

Window sills sloped toward the house allow water to drain against the frame rather than away, increasing risk of moisture intrusion into the wall.

Question 132: Which foundation type is most susceptible to damage from expansive (clay) soils?

Poured concrete slab-on-grade (Correct answer)
Basement foundation with perimeter drains
Rubble stone foundation
Drilled pier (caisson) foundation bearing on stable strata below

Correct answer: Poured concrete slab-on-grade

Slab-on-grade foundations are directly supported by the soil surface and are highly susceptible to heaving and cracking when expansive clay soils swell with moisture.

Question 133: An inspector finds that bathroom tile grout is cracked and missing around the tub surround. Why is this reported as a significant deficiency?

It allows water infiltration that can cause hidden structural damage (Correct answer)
Missing grout voids the manufacturer's tile warranty
It is a cosmetic issue that reduces the home's value
It indicates improper tile adhesive was used

Correct answer: It allows water infiltration that can cause hidden structural damage

Failed grout in wet areas allows water to penetrate behind tile, leading to substrate rot, mold growth, and potential structural damage to framing.

Question 134: A client asks the inspector to keep a serious structural defect confidential from the seller. The inspector should:

Report the defect directly to the seller without the client's consent
Comply if the defect is not a safety issue
Honor the request to maintain client trust
Explain that the report is the client's property but the inspector cannot omit material findings (Correct answer)

Correct answer: Explain that the report is the client's property but the inspector cannot omit material findings

The inspector cannot omit material findings from the report, though the client controls how they use the report after delivery.

Question 135: A home inspector discovers a condition outside the scope of the inspection. The most appropriate report action is to:

Ignore it since it falls outside the scope
Include a cost estimate for correction
Document it and recommend evaluation by a qualified specialist (Correct answer)
Repair it and note the action taken

Correct answer: Document it and recommend evaluation by a qualified specialist

Conditions outside scope should still be noted in the report with a referral to an appropriate specialist for further evaluation.

Question 136: Which of the following is the LEAST appropriate term to use in a home inspection report?

Recommend further evaluation
This house is a money pit (Correct answer)
Appears to be functioning as intended
Deficiency noted

Correct answer: This house is a money pit

Subjective, inflammatory, or opinion-based language like 'money pit' is unprofessional and inappropriate in inspection reports.

Question 137: What is the primary purpose of professional certification in Electrical Systems?

To meet legal requirements only
To replace practical experience
To validate competency and knowledge in the field (Correct answer)
To increase salary automatically

Correct answer: To validate competency and knowledge in the field

Certification validates that a professional has met established standards of knowledge and competency in Electrical Systems.

Question 138: What is the inspector's primary goal during the visual inspection of a roof?

To perform minor repairs if issues are found
To estimate the cost of repairs
To identify visible signs of defects or damage (Correct answer)
To determine the exact age of the roof

Correct answer: To identify visible signs of defects or damage

During a visual inspection of a roof, the inspector's primary goal is to identify any visible signs of defects, damage, or deterioration. This includes looking for missing shingles, cracks, excessive wear, proper flashing, and drainage issues that could compromise the roof's integrity. The inspection aims to assess the roof's current condition and potential for future problems, not to estimate repair costs or determine exact age.

Question 139: What is the minimum recommended attic ventilation ratio when a vapor retarder is present?

1:300 (Correct answer)
1:600
1:150
1:450

Correct answer: 1:300

Building codes typically require 1 square foot of net free ventilation area per 300 square feet of attic floor when a vapor retarder is used.

Question 140: What should an inspector do if access to a crawlspace is blocked by stored items?

Skip the inspection without mentioning it
Inform the client that the inspection cannot be completed
Note the limitation in the report and explain why it was inaccessible (Correct answer)
Move the items to gain access

Correct answer: Note the limitation in the report and explain why it was inaccessible

Home inspection standards require inspectors to report on areas that are inaccessible or obstructed. If a crawlspace is blocked by stored items, the inspector should clearly note this limitation in the report and explain that they were unable to access and inspect that area. This informs the client about the uninspected portion and prevents the inspector from exceeding their scope of work or moving personal property.

Question 141: Why is continuing education important in Interior Inspection?

To stay current with evolving standards and practices (Correct answer)
It is not important after certification
Only for re-certification requirements
To network only

Correct answer: To stay current with evolving standards and practices

Continuing education keeps professionals updated with the latest developments, standards, and best practices in their field.

Question 142: What fire hazard exists when insulation is placed directly over non-IC rated recessed light fixtures?

Off-gassing from insulation chemicals near the fixture
Heat buildup around the fixture that can ignite surrounding materials (Correct answer)
Electromagnetic interference disrupting the circuit
Increased moisture accumulation inside the fixture housing

Correct answer: Heat buildup around the fixture that can ignite surrounding materials

Non-IC (insulation contact) rated fixtures must maintain clearance from insulation; covering them traps heat that can reach ignition temperatures of surrounding materials.

Question 143: What role does ethics play in HVAC practice?

Ethics is optional in professional settings
It only matters for legal compliance
It only applies to managers
It guides professional conduct and protects stakeholders (Correct answer)

Correct answer: It guides professional conduct and protects stakeholders

Professional ethics provide frameworks for responsible decision-making, ensuring practitioners act in the best interest of those they serve.

Question 144: What condition does mineral scale buildup inside a water heater tank primarily cause?

Increased water pressure throughout the system
Increased risk of freezing in cold weather
Discoloration of porcelain fixtures only
Reduced efficiency and heating capacity, and accelerated tank corrosion (Correct answer)

Correct answer: Reduced efficiency and heating capacity, and accelerated tank corrosion

Mineral scale insulates the heating element or burner from water, reducing efficiency, increasing energy consumption, and accelerating tank corrosion and failure.

Question 145: How does documentation support quality in Roofing?

It is only for billing
It creates records, ensures consistency, and enables improvement (Correct answer)
It only serves administrative purposes
Documentation is unnecessary overhead

Correct answer: It creates records, ensures consistency, and enables improvement

Proper documentation creates accountability, ensures consistency, supports quality improvement, and provides legal protection.

Question 146: Which of the following actions would violate the inspector's duty of confidentiality?

Discussing specific property defects with a neighbor of the inspected home (Correct answer)
Retaining a copy of the report in the inspector's files
Providing the report to the client's attorney when legally required
Sharing findings with the contracting client

Correct answer: Discussing specific property defects with a neighbor of the inspected home

Disclosing client or property information to uninvolved third parties violates the inspector's confidentiality obligations.

Question 147: Why is continuing education important in Roofing?

It is not important after certification
To stay current with evolving standards and practices (Correct answer)
To network only
Only for re-certification requirements

Correct answer: To stay current with evolving standards and practices

Continuing education keeps professionals updated with the latest developments, standards, and best practices in their field.

Question 148: During a home inspection, the inspector notices the dryer vent is made of flexible plastic duct. This is a concern primarily because:

Plastic duct is combustible and can trap lint, creating a fire hazard (Correct answer)
Plastic has too low an R-value to retain heat
Plastic is not approved for exhaust systems generally
The duct will sag and reduce dryer efficiency only

Correct answer: Plastic duct is combustible and can trap lint, creating a fire hazard

Plastic flexible dryer duct is a fire hazard because it can melt from heat, accumulate lint in the corrugations, and easily ignite; metal duct is required.

Question 149: Which of the following is NOT typically included in a home inspection scope according to NHIE standards?

Underground fuel storage tanks (Correct answer)
Readily accessible attic spaces
Attached garages
Installed heating systems

Correct answer: Underground fuel storage tanks

Underground fuel storage tanks are excluded from standard home inspections because they are not visible or readily accessible.

Question 150: What is the primary purpose of a home's foundation?

To prevent moisture from entering the basement
To transfer the load of the structure to the ground (Correct answer)
To enhance the home's aesthetic appeal
To provide a level surface for flooring materials

Correct answer: To transfer the load of the structure to the ground

The foundation is the critical structural element that supports the entire weight of a building, including its walls, roof, and contents. Its primary purpose is to safely distribute this immense load evenly across a larger area of soil, preventing the structure from settling unevenly or collapsing. This ensures the stability, integrity, and longevity of the home.

Question 151: Which of the following statements accurately reflects the NHIE's position on inspector advertising?

Advertising must be truthful and not mislead the public about the inspector's qualifications (Correct answer)
Inspectors may advertise certifications they are currently pursuing but have not yet earned
Inspectors may use any marketing claims to attract business
Advertising is subject to no ethical guidelines under the NHIE Code

Correct answer: Advertising must be truthful and not mislead the public about the inspector's qualifications

The Code of Ethics requires that all advertising be truthful and not misrepresent the inspector's credentials or services.

Question 152: Which of the following best describes the inspector's obligation regarding newly constructed homes?

New homes are exempt from standard inspection protocols
New homes must receive a code compliance certification from the inspector
Only the foundation and framing need to be inspected in new construction
The same NHIE Standards of Practice apply as for existing homes (Correct answer)

Correct answer: The same NHIE Standards of Practice apply as for existing homes

NHIE Standards of Practice apply equally to new construction and existing homes.

Question 153: What is the recommended minimum clearance between a gas-fired furnace and combustible materials?

As specified on the furnace manufacturer's label (Correct answer)
12 inches on top, 6 inches on sides
6 inches on all sides regardless of manufacturer specs
1 inch on all sides

Correct answer: As specified on the furnace manufacturer's label

Clearance requirements vary by furnace model and design, so the manufacturer's installed label is the authoritative source that home inspectors must reference.

Question 154: What is the standard minimum headroom clearance required on a stairway in a residential building?

7 feet 0 inches
6 feet 4 inches
6 feet 8 inches (Correct answer)
6 feet 0 inches

Correct answer: 6 feet 8 inches

The IRC requires a minimum headroom clearance of 6 feet 8 inches measured vertically from the stair nosing to the ceiling along the entire stairway.

Question 155: What is the purpose of building wrap (housewrap) installed behind exterior cladding?

Replace the need for flashing at openings
Provide primary structural sheathing
Serve as the primary insulation layer
Act as a weather-resistive barrier while allowing vapor to escape (Correct answer)

Correct answer: Act as a weather-resistive barrier while allowing vapor to escape

Housewrap is a weather-resistive barrier (WRB) that blocks liquid water infiltration while remaining vapor-permeable to allow moisture in the wall assembly to dry outward.

Question 156: Which area of a home typically presents the highest radon entry risk?

Crawl space floor penetrations and sump pits (Correct answer)
Upper-floor bathroom drains
Attic vents and ridge caps
Exterior wall weep holes

Correct answer: Crawl space floor penetrations and sump pits

Radon enters homes primarily through soil contact points such as crawl space floors, foundation cracks, and sump pits due to pressure differentials.

Question 157: What is the inspector's obligation regarding environmental hazards such as asbestos or lead paint?

Certify the home as hazard-free if none are observed
Note the presence of materials that may contain hazardous substances and recommend specialist testing (Correct answer)
Test all suspected materials using field test kits
Remove or encapsulate hazardous materials found

Correct answer: Note the presence of materials that may contain hazardous substances and recommend specialist testing

Inspectors identify potential hazard indicators and refer to specialists; they do not test, remove, or certify.

Question 158: Which condition would cause a sump pump to fail during a heavy rain event?

Pit diameter too small for the pump model
Discharge line check valve installed backwards (Correct answer)
Pump float set too high
Pump cycling on and off rapidly

Correct answer: Discharge line check valve installed backwards

A check valve installed in the reverse direction blocks the discharge flow entirely, preventing the pump from removing water from the pit.

Question 159: What is the minimum slope required for a horizontal drain pipe to ensure proper flow?

1/16 inch per foot
1/4 inch per foot (Correct answer)
1/2 inch per foot
1/8 inch per foot

Correct answer: 1/4 inch per foot

A minimum slope of 1/4 inch per foot is required for horizontal drain pipes to ensure gravity effectively carries wastewater and solids away. This specific gradient prevents standing water, blockages, and the accumulation of debris within the pipes. Proper slope is crucial for the efficient, sanitary, and clog-free operation of a plumbing drainage system.

Question 160: An inspector finds a roof deficiency but cannot access the attic due to a locked door. How should this be handled in the report?

Cancel the inspection until access is provided
Only describe the exterior roof findings and omit any mention of attic access
Assume the attic condition matches the exterior findings
Note the roof deficiency and separately document that the attic was inaccessible and why (Correct answer)

Correct answer: Note the roof deficiency and separately document that the attic was inaccessible and why

Each inaccessible area must be documented separately with the reason for the limitation alongside any related observations made from accessible areas.

Question 161: A report's executive summary or 'summary section' should:

List every observation including minor maintenance items
Provide a concise overview of significant findings, referencing the detailed sections for more information (Correct answer)
Highlight only items the inspector personally considers most important and omit others
Replace the full body of the report for brevity

Correct answer: Provide a concise overview of significant findings, referencing the detailed sections for more information

The summary highlights the most significant findings while directing the reader to detailed sections for complete information, not replacing the full report.

Question 162: An inspector finds a major structural defect midway through an inspection. What should the inspector do?

Verbally notify the client immediately and also document it in the written report (Correct answer)
Contact the listing agent before telling the client
Stop the inspection immediately and leave the premises
Continue the inspection and include all findings in the final report

Correct answer: Verbally notify the client immediately and also document it in the written report

Major defects should be communicated to the client promptly and also documented in writing in the inspection report.

Question 163: Why is continuing education important in Electrical Systems?

To stay current with evolving standards and practices (Correct answer)
It is not important after certification
Only for re-certification requirements
To network only

Correct answer: To stay current with evolving standards and practices

Continuing education keeps professionals updated with the latest developments, standards, and best practices in their field.

Question 164: During an exterior inspection, an inspector notes that the driveway slopes toward the garage rather than away from it. What is the PRIMARY concern?

Water will drain toward the garage and may enter the structure during heavy rain (Correct answer)
The driveway surface will deteriorate faster due to ponding water
The garage door threshold will corrode due to repeated water contact
Vehicles parked in the driveway may roll toward the garage

Correct answer: Water will drain toward the garage and may enter the structure during heavy rain

A driveway sloping toward the garage directs surface water to the garage entry, increasing the risk of water intrusion into the garage or adjacent living space.

Question 165: What is the relationship between theory and practice in Interior Inspection?

Practice is unnecessary if you know theory
They are completely separate
Theory is unnecessary
Theory provides the foundation; practice applies it to real situations (Correct answer)

Correct answer: Theory provides the foundation; practice applies it to real situations

Theory provides the conceptual foundation and principles, while practice involves applying those concepts to real-world situations. Both are essential for competence.

Question 166: When an inspector observes a condition that poses an immediate safety hazard, the report should:

Wait until the full report is compiled before noting it
Place this finding in alphabetical order with all other deficiencies
Estimate the cost to repair before including it
Clearly flag it as a safety concern and recommend immediate corrective action (Correct answer)

Correct answer: Clearly flag it as a safety concern and recommend immediate corrective action

Immediate safety hazards must be prominently identified in the report with urgent corrective action recommended.

Question 167: What does it mean when a home inspector reports 'open ground' on a receptacle?

The equipment grounding conductor is absent or not connected at the receptacle (Correct answer)
The neutral conductor is not connected
The receptacle cover plate is missing
The circuit breaker is in the off position

Correct answer: The equipment grounding conductor is absent or not connected at the receptacle

An open ground means the grounding slot of the receptacle has no connection to an equipment grounding conductor.

Question 168: When inspecting a home's electrical system, aluminum branch circuit wiring used in the 1960s–70s is a concern because:

Aluminum cannot be connected to modern circuit breakers
Aluminum corrodes immediately when exposed to air
Aluminum expands and contracts more than copper, causing loose connections and fire risk (Correct answer)
Aluminum is too conductive and overloads outlets

Correct answer: Aluminum expands and contracts more than copper, causing loose connections and fire risk

Aluminum wiring has a higher coefficient of thermal expansion than copper, so connection points loosen over time with heating and cooling cycles, creating arcing and fire hazards.

Question 169: A home inspector finds that the main water shutoff valve is a gate valve that cannot be fully opened or closed. What should be reported?

Gate valves require annual lubrication only; no repair is needed
The valve should be noted as deficient since it may not reliably shut off water in an emergency (Correct answer)
Only ball valves are code-approved for main shutoffs
Gate valves are obsolete and must be replaced with PVC ball valves

Correct answer: The valve should be noted as deficient since it may not reliably shut off water in an emergency

A main shutoff that cannot fully open or close is a safety concern because it may fail to stop water flow during a plumbing emergency.

Question 170: What does it mean when an inspection report classifies a deficiency as a 'safety hazard'?

The deficiency will cause structural damage if unaddressed
The condition poses a risk of bodily injury or death (Correct answer)
The item requires immediate repair before occupancy
The item has failed a code inspection

Correct answer: The condition poses a risk of bodily injury or death

A safety hazard is a condition that presents a risk of injury or death to the occupants.

Question 171: When inspecting a crawl space, a home inspector finds that wood girders are resting directly on concrete piers without any separation. What is the primary concern?

Concrete will stain the wood
The girder may slide off the pier
Fire hazard from proximity to concrete
Moisture transfer from concrete to wood causing decay (Correct answer)

Correct answer: Moisture transfer from concrete to wood causing decay

Direct contact between wood and concrete allows moisture to wick into the wood, promoting decay and compromising structural integrity over time.

Question 172: What is the main purpose of the condensate drain in an air conditioning system?

To remove humidity from the air
To drain water from the compressor
To remove condensation from the evaporator coil (Correct answer)
To prevent refrigerant leakage

Correct answer: To remove condensation from the evaporator coil

As warm, humid air passes over the cold evaporator coil in an air conditioning system, moisture condenses on its surface. The condensate drain's main purpose is to collect and safely channel this water away from the system and the building. This prevents water damage, mold growth, and maintains the efficiency and proper operation of the AC unit.

Question 173: Which observation during an interior inspection most strongly suggests the presence of urea-formaldehyde foam insulation (UFFI)?

Spray foam visible around window frames
Small holes in exterior walls that have been patched, in a home built between 1970 and 1980 (Correct answer)
Yellow fiberglass batts visible in wall cavities
Rigid foam board exposed in a basement

Correct answer: Small holes in exterior walls that have been patched, in a home built between 1970 and 1980

UFFI was injected through small holes drilled in exterior walls, primarily in the 1970s; patched holes in older homes are a key visual indicator.

Question 174: A home inspector observes a washing machine drain hose inserted into a standpipe that is only 18 inches tall. What is the concern?

Washing machine standpipes must be at least 36 inches tall
The hose material may be incompatible with the standpipe
The drain hose diameter is too large for residential standpipes
The standpipe is too short and may allow wastewater to overflow or siphon (Correct answer)

Correct answer: The standpipe is too short and may allow wastewater to overflow or siphon

A washing machine standpipe must be at least 18–42 inches tall (per most codes), and the drain hose must not be inserted so deep as to create a seal that causes siphoning.

Question 175: Which of the following is the inspector's responsibility when testing GFCI outlets?

Install GFCI protection where it is absent
Replace any GFCI that fails to trip
Verify that all outlets within 6 feet of water are GFCI protected per current code
Test each GFCI using a GFCI tester and document those that fail to operate properly (Correct answer)

Correct answer: Test each GFCI using a GFCI tester and document those that fail to operate properly

Inspectors test and report GFCI function; they do not install, replace, or enforce current code on existing construction.

Question 176: Which of the following is NOT a required location for AFCI protection in newer construction under current NEC?

Bathroom circuits (Correct answer)
Bedroom circuits
Living room circuits
Kitchen circuits

Correct answer: Bathroom circuits

Bathroom circuits require GFCI protection, not AFCI; AFCI is required for bedrooms, kitchens, living rooms, and most habitable spaces.

Question 177: Which type of asbestos fiber is considered most hazardous due to its thin, straight shape that penetrates deep lung tissue?

Cellulose mineral fibers
Crocidolite (blue asbestos) and amosite (brown asbestos) amphibole fibers (Correct answer)
Chrysotile (white asbestos)
Wollastonite fibers

Correct answer: Crocidolite (blue asbestos) and amosite (brown asbestos) amphibole fibers

Amphibole fibers like crocidolite and amosite are straight and thin, allowing them to penetrate deep into the lung where they cause mesothelioma and cancer.

Question 178: What is the purpose of a drip edge at the eave of a roof?

To direct water off the fascia and into the gutter (Correct answer)
To seal the gap between the soffit and rafter tails
To anchor the first course of shingles to the deck
To provide a nailing surface for the starter course

Correct answer: To direct water off the fascia and into the gutter

Drip edge metal at eaves projects water away from the fascia board and into the gutter, preventing fascia rot and water infiltration behind the gutter.

Question 179: How does documentation support quality in HVAC?

It only serves administrative purposes
Documentation is unnecessary overhead
It is only for billing
It creates records, ensures consistency, and enables improvement (Correct answer)

Correct answer: It creates records, ensures consistency, and enables improvement

Proper documentation creates accountability, ensures consistency, supports quality improvement, and provides legal protection.

Question 180: A home inspector observes that a wood beam in a basement has a significant vertical crack running along its length. This condition is typically:

The result of overloading the beam
Evidence of insect damage
A serious structural defect requiring immediate repair
A normal seasoning check caused by drying shrinkage, usually not structurally significant (Correct answer)

Correct answer: A normal seasoning check caused by drying shrinkage, usually not structurally significant

Longitudinal checks (vertical splits) in solid-sawn lumber are typically seasoning cracks from moisture loss during drying and are generally not structurally significant unless deep or combined with other defects.

Question 181: What is the primary purpose of attic baffles (rafter vents)?

To prevent wildlife from entering through soffit vents
To support the weight of blown-in insulation at the eaves
To maintain an air channel from soffit vents to the attic while preventing insulation from blocking airflow (Correct answer)
To redirect condensation moisture away from ceiling insulation

Correct answer: To maintain an air channel from soffit vents to the attic while preventing insulation from blocking airflow

Attic baffles create an unobstructed channel between the roof deck and insulation at the eaves, ensuring blown-in or batt insulation does not block soffit vent airflow.

Question 182: Which older insulation material may contain asbestos and should be flagged as a potential health hazard during inspection?

Mineral wool (rock wool) insulation
Vermiculite insulation (Correct answer)
Cellulose insulation
Fiberglass batt insulation

Correct answer: Vermiculite insulation

Vermiculite from Libby, Montana was contaminated with asbestos and poses a health risk if disturbed; inspectors should recommend professional testing.

Question 183: Which AFCI protection is required by the NEC for bedroom circuits in new construction?

GFCI-only protection
Whole-house surge protection
Arc-fault circuit interrupter (AFCI) breakers (Correct answer)
Dual-function GFCI/AFCI receptacles only

Correct answer: Arc-fault circuit interrupter (AFCI) breakers

The NEC requires AFCI breaker protection for bedroom circuits to detect dangerous arcing that can cause electrical fires from damaged wiring.

Question 184: What is the maximum water heater temperature setting recommended to prevent scalding at the tap?

120°F (Correct answer)
130°F
140°F
110°F

Correct answer: 120°F

The U.S. Consumer Product Safety Commission recommends setting water heaters to 120°F to reduce scalding risk while still being hot enough to inhibit Legionella bacteria.

Question 185: Which of the following best describes the inspection methodology required by NHIE Standards?

Invasive investigation to locate hidden defects
Complete disassembly of mechanical systems
Destructive testing of structural components
Non-invasive visual examination of accessible systems (Correct answer)

Correct answer: Non-invasive visual examination of accessible systems

NHIE Standards require a non-invasive visual examination of readily accessible systems and components.

Question 186: Diagonal cracking emanating from the corners of window or door openings in a masonry wall most commonly indicates:

Normal thermal expansion
Foundation settlement causing differential movement (Correct answer)
Freeze-thaw damage to mortar
Inadequate flashing at the lintel

Correct answer: Foundation settlement causing differential movement

Diagonal cracks at opening corners are a classic sign of differential foundation settlement, which causes the structure to rack and concentrate stress at the weakest points.

Question 187: What is the correct method for a home inspector to test the operation of a gas furnace during a home inspection?

Operate the furnace for a minimum of 2 hours to evaluate performance
Remove the burner assembly to inspect it directly
Set the thermostat above the current room temperature and observe that the system completes a full heating cycle (Correct answer)
Test with a combustion analyzer only

Correct answer: Set the thermostat above the current room temperature and observe that the system completes a full heating cycle

Home inspectors verify furnace operation by raising the thermostat set point above ambient temperature and observing that the furnace ignites, runs, and completes a heating cycle without tripping safety controls.

Question 188: During a home inspection, which observation would most directly prompt the inspector to recommend carbon monoxide detector installation?

Absence of CO detectors within 15 feet of sleeping areas in a home with gas appliances (Correct answer)
Presence of synthetic carpeting throughout the home
Older single-pane window glazing
Presence of a wood privacy fence

Correct answer: Absence of CO detectors within 15 feet of sleeping areas in a home with gas appliances

Most jurisdictions require CO detectors near sleeping areas in homes with gas, oil, or solid-fuel appliances; their absence is a safety deficiency.

Question 189: How does documentation support quality in Plumbing?

It only serves administrative purposes
Documentation is unnecessary overhead
It is only for billing
It creates records, ensures consistency, and enables improvement (Correct answer)

Correct answer: It creates records, ensures consistency, and enables improvement

Proper documentation creates accountability, ensures consistency, supports quality improvement, and provides legal protection.

Question 190: Which roof framing member runs from the ridge board to the top plate and carries no load other than its own weight in a conventional rafter system?

Hip rafter
Valley rafter
Collar tie
Common rafter (Correct answer)

Correct answer: Common rafter

A common rafter spans from the ridge to the top plate and is the standard framing member in a simple gable roof, carrying only its own tributary roof load.

Question 191: A home inspector tests a heat pump and finds it only provides heat via the electric resistance backup strips even in mild 50°F weather. What is the likely cause?

The air filter needs replacement
The reversing valve may be stuck or failed, preventing heat pump heating mode (Correct answer)
The thermostat is set correctly — this is normal operation
The outdoor unit needs cleaning

Correct answer: The reversing valve may be stuck or failed, preventing heat pump heating mode

If a heat pump defaults to auxiliary electric resistance heat in mild weather, the reversing valve (which switches between heating and cooling mode) is likely stuck in the cooling position.

Question 192: When describing a deficiency in an inspection report, which approach best meets NHIE standards?

Describe the condition, its location, and recommend corrective action (Correct answer)
Assign a severity score from 1 to 10
Use technical jargon to demonstrate expertise
List only the repair cost estimate

Correct answer: Describe the condition, its location, and recommend corrective action

NHIE standards require the report to describe the observed condition, its location, and a recommendation for correction or evaluation.

Question 193: During an interior inspection, an inspector finds windows that are painted shut. This is primarily reported because:

It affects the energy efficiency rating of the window
Paint buildup reduces insulating value of the glazing
It eliminates the window as an emergency egress opening (Correct answer)
It indicates the home was poorly maintained overall

Correct answer: It eliminates the window as an emergency egress opening

Painted-shut windows in sleeping rooms eliminate a required emergency escape and rescue opening, which is a life-safety deficiency.

Question 194: What role does ethics play in Electrical Systems practice?

It guides professional conduct and protects stakeholders (Correct answer)
It only applies to managers
Ethics is optional in professional settings
It only matters for legal compliance

Correct answer: It guides professional conduct and protects stakeholders

Professional ethics provide frameworks for responsible decision-making, ensuring practitioners act in the best interest of those they serve.

Question 195: Which statement about photo documentation in home inspection reports is most accurate?

Photos must be taken only of major deficiencies
Photos replace written descriptions and narrative
Photos are required by all state licensing boards
Photos support and clarify written findings but do not replace them (Correct answer)

Correct answer: Photos support and clarify written findings but do not replace them

Photographs supplement written findings by providing visual evidence, but the written narrative remains the primary documentation.

Question 196: What is the most likely cause of low water pressure at a single fixture while pressure at other fixtures is normal?

A partially closed supply valve or mineral-clogged aerator at that fixture (Correct answer)
Undersized main service line
A failing pressure-reducing valve at the main service entry
A failed expansion tank on the water heater

Correct answer: A partially closed supply valve or mineral-clogged aerator at that fixture

When pressure is low at only one fixture, a locally restricted aerator or partially closed valve is the most probable cause.

Question 197: Which of the following is a limitation that should always be disclosed in a home inspection report?

The use of a moisture meter to test walls
The presence of trees near the foundation
Areas not inspected due to inaccessibility or unsafe conditions (Correct answer)
The age of appliances as estimated by appearance

Correct answer: Areas not inspected due to inaccessibility or unsafe conditions

All uninspected areas, systems, or components must be disclosed as limitations so the client understands the inspection's boundaries.

Question 198: What role does ethics play in Roofing practice?

It only applies to managers
It guides professional conduct and protects stakeholders (Correct answer)
It only matters for legal compliance
Ethics is optional in professional settings

Correct answer: It guides professional conduct and protects stakeholders

Professional ethics provide frameworks for responsible decision-making, ensuring practitioners act in the best interest of those they serve.

Question 199: Which type of valley flashing method weaves shingles from both roof planes together without metal flashing?

Open valley
Woven valley (Correct answer)
W-valley
Closed-cut valley

Correct answer: Woven valley

A woven valley interlaces shingles from each roof plane alternately, eliminating the need for metal valley flashing.

Question 200: Which of the following indicates a potential safety issue in an electrical panel?

Breaker labeled for its circuit
Properly sized circuit breakers
Double-tapped breakers (Correct answer)
Grounding wire connected to the neutral bus bar

Correct answer: Double-tapped breakers

Double-tapped breakers occur when two wires are connected to a single breaker terminal designed for only one wire. This creates an unsafe condition because the breaker may not properly trip when overloaded, leading to overheating, potential fire hazards, and non-compliance with electrical codes. It indicates a significant safety defect in the electrical panel that requires immediate attention.

Question 201: An inspector is asked by the seller to not disclose a known defect to the buyer. What should the inspector do?

Consult with the real estate agent before deciding
Omit the defect but advise the buyer to ask the seller directly
Refuse and document all discovered defects in the report per professional standards (Correct answer)
Comply if the defect is minor and cosmetic

Correct answer: Refuse and document all discovered defects in the report per professional standards

Inspectors have a professional and ethical obligation to report all observed deficiencies regardless of seller requests.

Question 202: What standard of care does a home inspector use when evaluating conditions?

The standard of the local building department
The same standard as a licensed engineer or architect
The same standard as a contractor providing a repair estimate
The standard of a qualified home inspector performing a visual inspection (Correct answer)

Correct answer: The standard of a qualified home inspector performing a visual inspection

Inspectors are held to the standard of a qualified home inspector performing a non-invasive visual inspection, not an engineering analysis.

Question 203: Which condition in a basement wall is most indicative of hydrostatic pressure?

Diagonal stair-step cracking at corners
Spalling of the concrete surface
Horizontal cracking in the middle third of the wall (Correct answer)
Vertical hairline cracks near the center

Correct answer: Horizontal cracking in the middle third of the wall

Horizontal cracks in the middle third of a basement masonry or concrete wall are the most serious sign of hydrostatic pressure from saturated soil pushing inward.

Question 204: What is the minimum recommended overlap for asphalt shingles at the rake edge?

2 inches
1/2 inch
1/4 inch (Correct answer)
1 inch

Correct answer: 1/4 inch

Asphalt shingles should overhang the rake edge by 1/4 to 3/8 inch to allow proper water runoff.

Question 205: An inspector finds that the bathroom exhaust fan discharges into the attic. This is a deficiency because:

It creates negative pressure in the bathroom
It violates fire separation requirements
It reduces the fan's CFM capacity
It introduces moisture into the attic, promoting mold and structural damage (Correct answer)

Correct answer: It introduces moisture into the attic, promoting mold and structural damage

Exhausting humid bathroom air into the attic causes moisture accumulation that can lead to mold growth, insulation damage, and wood rot in the roof structure.

Question 206: Which of the following is the MOST significant concern when inspecting a chimney that has no cricket or saddle?

The chimney cap may be improperly sized
Flue gases may not draft properly
Water can pond behind the chimney and infiltrate the roof assembly (Correct answer)
Mortar joints will deteriorate faster than normal

Correct answer: Water can pond behind the chimney and infiltrate the roof assembly

Without a cricket or saddle behind a wide chimney, water ponds and can penetrate the flashing, leading to serious roof and structural damage.

Question 207: What is the purpose of performing a 'functional flow test' on plumbing fixtures during a home inspection?

To measure exact water pressure in PSI throughout the system
To verify that the water heater capacity meets family size requirements
To confirm pipe material compliance with local codes
To assess whether multiple fixtures operating simultaneously show acceptable water pressure and drainage (Correct answer)

Correct answer: To assess whether multiple fixtures operating simultaneously show acceptable water pressure and drainage

A functional flow test checks whether simultaneous use of fixtures shows adequate supply and drainage, identifying pressure or flow deficiencies.

Question 208: What is the purpose of a ridge board in conventional roof framing?

To serve as a point of connection for opposing rafters at the peak (Correct answer)
To provide lateral bracing for gable walls
To replace the need for collar ties
To carry the full weight of the roof load

Correct answer: To serve as a point of connection for opposing rafters at the peak

A ridge board is a non-structural member that simply provides a nailing surface where opposing pairs of rafters meet at the peak.

Question 209: Which of the following scenarios represents a conflict of interest under the NHIE Code of Ethics?

Inspecting a home in a neighborhood where the inspector lives
Recommending a contractor in whom the inspector has a financial interest (Correct answer)
Performing a re-inspection after repairs are completed
Inspecting a newly constructed home before closing

Correct answer: Recommending a contractor in whom the inspector has a financial interest

Recommending contractors in whom the inspector has a financial interest creates a direct conflict of interest.

Question 210: What is the primary purpose of professional certification in Exterior Evaluation?

To validate competency and knowledge in the field (Correct answer)
To replace practical experience
To increase salary automatically
To meet legal requirements only

Correct answer: To validate competency and knowledge in the field

Certification validates that a professional has met established standards of knowledge and competency in Exterior Evaluation.

Question 211: What role does ethics play in Plumbing practice?

It guides professional conduct and protects stakeholders (Correct answer)
It only applies to managers
It only matters for legal compliance
Ethics is optional in professional settings

Correct answer: It guides professional conduct and protects stakeholders

Professional ethics provide frameworks for responsible decision-making, ensuring practitioners act in the best interest of those they serve.

Question 212: A two-story home has a lower roof that terminates against a second-story wall. What type of flashing is required along this horizontal intersection?

Through-wall flashing embedded in the second-story framing
Kickout flashing where the lower roof meets the wall corner
A continuous self-adhering membrane over the entire transition
Base and counter flashing with step flashing along the slope (Correct answer)

Correct answer: Base and counter flashing with step flashing along the slope

Where a sloped lower roof meets a vertical wall, base flashing is installed on the roof surface and counter (cap) flashing is embedded in the wall, with step flashing at each shingle course.

Question 213: When multiple deficiencies are found in the same system (e.g., electrical), the best report practice is to:

Report them separately under unrelated headings for clarity
Group them under the system heading with individual descriptions for each (Correct answer)
Combine them into a single vague statement about the system
List only the most serious deficiency to avoid overwhelming the client

Correct answer: Group them under the system heading with individual descriptions for each

Grouping deficiencies by system while describing each individually provides organized, complete, and easy-to-follow documentation.

Question 214: Which of the following is an indicator of roof rafter spread at the exterior walls?

Lifted roof shingles at the ridge
Walls bowing outward and ridge sagging (Correct answer)
Missing soffit vents
Cracked chimney mortar

Correct answer: Walls bowing outward and ridge sagging

Rafter spread occurs when ceiling joists or collar ties fail to resist outward thrust from rafters, causing exterior walls to bow out and the ridge to sag downward.

Question 215: How should an inspector document a condition that cannot be fully assessed due to personal property blocking access?

Estimate conditions based on adjacent visible areas
State the area was inspected with no concerns
Report that the area could not be fully inspected due to stored items and recommend reinspection (Correct answer)
Omit the area from the report entirely

Correct answer: Report that the area could not be fully inspected due to stored items and recommend reinspection

Limitations imposed by stored items or furnishings must be clearly noted, and reinspection after removal should be recommended.

Question 216: What is the relationship between theory and practice in Plumbing?

Theory provides the foundation; practice applies it to real situations (Correct answer)
Practice is unnecessary if you know theory
They are completely separate
Theory is unnecessary

Correct answer: Theory provides the foundation; practice applies it to real situations

Theory provides the conceptual foundation and principles, while practice involves applying those concepts to real-world situations. Both are essential for competence.

Question 217: When inspecting a forced-air heating system, a dirty blower wheel most directly causes:

Reduced airflow and system efficiency (Correct answer)
Tripping of the high-limit switch immediately
Overheating of the heat exchanger only
Increased risk of carbon monoxide production

Correct answer: Reduced airflow and system efficiency

A dirty blower wheel is unbalanced and has restricted blade area, which significantly reduces airflow volume and forces the system to work harder with less efficiency.

NHIE (National Home Inspector Examination)

The NHIE is administered by the Examination Board of Professional Home Inspectors (EBPHI). The exam contains 200 multiple-choice questions (175 scored, 25 unscored pretest items) with a 4-hour time limit. A scaled passing score of 500 out of 800 is required. The exam is organized into three domains: Property and Building Inspection/Site Review (63%), Analysis of Findings and Reporting (25%), and Professional Responsibilities (12%). Topics include structural systems, roofing, electrical, plumbing, HVAC, interior/exterior inspection, and report writing.

200

Questions

240 min

Time Limit

63%

To Pass

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