Home Inspector Roofing Systems and Materials Questions and Answers

Question 1

During a winter inspection in a cold climate, you observe a significant ridge of ice along the eaves of a home. This is most likely caused by:

Accepted Answer

Heat loss from the house into the attic, melting snow on the upper roof.

Answer

Clogged gutters and downspouts.

Answer

Lack of a self-adhering ice and water shield membrane.

Answer

Excessively high winds blowing snow onto the roof edge.

Question 2

While inspecting a recently installed asphalt shingle roof, you notice some shingles have circular marks with missing granules and a soft or bruised feel to the touch. Which of the following is the most probable cause of this condition?

Accepted Answer

Hail impact.

Answer

Blistering from manufacturing defects.

Answer

Normal weathering and aging.

Answer

Scuffing from foot traffic during installation.

Question 3

A home inspector is evaluating the attic of a 1,800-square-foot house. According to the standard International Residential Code (IRC) 1/150 rule, what is the minimum required net free ventilating area (NFVA)?

Accepted Answer

12 square feet

Answer

6 square feet

Answer

10 square feet

Answer

15 square feet

Question 4

Which of the following materials is commonly used for roof flashing due to its durability, malleability, and corrosion resistance, often developing a distinctive green patina over time?

Accepted Answer

Copper

Answer

Galvanized Steel

Answer

Aluminum

Answer

PVC (Polyvinyl Chloride)

Question 5

A home inspector identifies a Built-Up Roofing (BUR) system on a commercial flat roof. When properly installed and maintained with multiple plies, what is the typical life expectancy of this type of roofing system?

Accepted Answer

20-30 years

Answer

5-10 years

Answer

10-15 years

Answer

40-50 years

Question 6

According to the National Roofing Contractors Association (NRCA), what is the recommended minimum slope for the application of standard asphalt shingles?

Accepted Answer

4:12

Answer

2:12

Answer

3:12

Answer

5:12