Home Inspector Roofing Systems and Materials Flashcards
7 cards from real Home Inspector Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Home Inspector Roofing Systems and Materials flashcards as text
What does a home inspector look for when evaluating roof ventilation adequacy using the 1:150 rule?
Answer: One square foot of vent area for every 150 square feet of attic floor area without a vapor barrier
The 1:150 ratio requires 1 square foot of net free ventilation area for every 150 square feet of attic floor space when no vapor barrier is present.
Which condition is a home inspector MOST likely to find in a roof with insufficient attic ventilation?
Answer: Premature shingle aging and potential for ice dam formation
Poor attic ventilation traps heat and moisture, causing shingles to age prematurely from heat below and increasing the risk of ice dams in cold climates.
What is the term for the triangular roof shape formed when two gable roofs intersect at a right angle?
Answer: Intersecting gable (cross gable)
An intersecting or cross-gable roof is formed when two gable roof sections meet perpendicularly, creating a valley where they intersect.
A home inspector finds that roof shingles have been installed over two existing layers of roofing. What concern should be documented?
Answer: Excess weight and possible building code violation limiting re-roofing layers
Most building codes limit roofs to two layers of asphalt shingles; a third layer adds excessive weight and prevents proper inspection of the deck.
What type of roof damage is most commonly associated with hailstorm events on asphalt shingle roofs?
Answer: Bruised or dented shingles with localized granule loss creating soft spots
Hail impact bruises asphalt shingles, knocking off granules and creating soft spots in the mat that accelerate water infiltration and shingle failure.
When inspecting a slate roof, which deficiency is considered most serious?
Answer: Slipped, broken, or missing slates exposing the felt underlayment
Slipped, broken, or missing slates expose the underlayment directly to weather; the felt degrades quickly without the protective slate layer, leading to leaks.
What is the main reason home inspectors check for proper clearance between roofing materials and wood siding or trim?
Answer: To prevent moisture wicking into wood causing rot at the roof-wall junction
Direct contact between roofing materials and wood siding traps moisture, promoting rot and decay at the critical roof-wall junction.