Question:

According to the 2012 IRC, asphalt shingles shall be installed to resist

the component and cladding loads specified in Table R301.2(2),

adjusted for height and exposure in accordance with Table R301.2(3).

 

A)   TRUE B) FALSE

 Answer: False

roofr905

 

 

 

 

 

 

 

 

 

 

 

 

Unlike membrane-type roof systems (built-up, single-plies), which provide for continuous air barriers, asphalt shingle systems are recognized to be air-permeable. As a result, conventional wind-test methods do not yield

representative results when used on asphalt shingle roof systems. Hence, asphalt shingles are classified in accordance ASTM D7158 or ASTM D3161 to resist the maximum basic wind speed specified in Table R905.2.4.1.(1) or Table R905.2.4.1(2), not the component and cladding loads specified in Table R301.2(2).