Roof Sailing Roofing Materials and Underlayment

Question 1

What is the minimum weight rating for felt underlayment used under asphalt shingles in the US?

Accepted Answer

15 lb felt

Answer

10 lb felt

Answer

30 lb felt

Answer

45 lb felt

Question 2

What is the primary advantage of synthetic roofing underlayment over traditional felt?

Accepted Answer

Higher tear resistance, lighter weight, and improved UV stability

Answer

Lower cost

Answer

Easier to remove during re-roofing

Answer

Better fire rating

Question 3

Ice-and-water shield (self-adhering membrane) is required in all US climate zones at which roof location?

Accepted Answer

At eaves in areas with freezing temperatures

Answer

Along all horizontal joints

Answer

On all south-facing slopes

Answer

Along all ridge lines

Question 4

What does the 'Class A' fire rating on asphalt shingles indicate?

Accepted Answer

Highest level of fire resistance per ASTM E108

Answer

Maximum wind resistance

Answer

Impact resistance

Answer

Maximum algae resistance

Question 5

What is the standard width of a roll of roofing underlayment?

Accepted Answer

36 inches

Answer

24 inches

Answer

48 inches

Answer

60 inches

Question 6

Which shingle material is most commonly used for residential roofing in the United States?

Accepted Answer

Asphalt (fiberglass-reinforced)

Answer

Wood shake

Answer

Clay tile

Answer

Metal standing seam