Products / DuraFlex G4S SBS

U.S. Ply's smooth-surfaced SBS (Styrene-Butadiene-Styrene) modified bitumen membrane with a fiberglass mat, applied with hot asphalt or SBS cold adhesive. It is used as a base sheet or interply sheet in modified bitumen and built-up roof systems. The data sheet lists a 3.0 mm (120 mil) thickness, 88 lb rolls of about one square, and classification under ASTM D6163 Type I, Grade S. It states the product is UL Classified, FM Approved, and listed under Florida Building Code FL-8077 and Texas Department of Insurance RC-123.