(GAF) GAF Certified Roofing Contractors Practice Test
(GAF) GAF Certified Roofing Contractors GAF Roofing Materials & Installation Techniques
What is the primary purpose of underlayment in roofing?
Select your answer
A
To add aesthetic appeal
B
To act as a protective waterproof barrier
C
To support the roof structure
D
To insulate the attic
Need a hint?
(H)
