1.1 This specification covers (1) inorganic fiber-reinforced organic felt underlayment and ( 2) inorganic fiber-based felt for use as underlayment with steep-slope roofing products. The intent of this specification is to provide criteria
ASTM
Standard Specification for Underlayment Felt Containing Inorganic Fibers Used in Steep-Slope Roofing
STD-52829
2005
2005-01-01
2