ASHI Interiors, Insulation & Ventilation 2

Question 1

A home inspector finds that attic insulation covers the soffit vents. What is the PRIMARY concern?

Accepted Answer

Blocked vents restrict airflow causing moisture and heat buildup

Answer

Blocking soffit vents restricts the intake of fresh air needed for proper attic ventilation, which can cause excessive heat and moisture accumulation leading to structural damage and mold.

Question 2

Which condition in a basement would MOST indicate inadequate vapor retarder installation on a crawl space floor?

Accepted Answer

Condensation and standing water on the crawl space floor

Answer

Condensation and standing water on the crawl space floor indicate that ground moisture is not being controlled by a vapor retarder, allowing moisture to migrate upward.

Question 3

An inspector observes that interior door frames show diagonal cracks at the corners. What condition does this MOST likely indicate?

Accepted Answer

Differential foundation settlement causing racking

Answer

Diagonal cracks radiating from door corners typically indicate racking stress caused by differential settlement or structural movement that distorts the door opening.

Question 4

What is the MINIMUM net free ventilation area ratio typically required for attic spaces using both ridge and soffit vents?

Accepted Answer

1/300 of the attic floor area

Answer

When balanced ridge and soffit ventilation is provided with a vapor retarder, the minimum net free area is 1/300 of the attic floor area per model building codes.

Question 5

A home inspector finds batt insulation installed between floor joists over an unheated garage with the vapor retarder facing DOWN toward the garage. What should the inspector note?

Accepted Answer

This is incorrect; the vapor retarder should face UP toward the warm living space

Answer

The vapor retarder should face the warm-in-winter side, which is the heated living space above, so it faces upward to prevent moisture from the living area from entering the insulation.

(ASHI) ASHI Certified Home Inspector Practice Test

(ASHI) ASHI Certified Home Inspector Practice Test

ASHI Interiors, Insulation & Ventilation 2