Products / CertainTeed Flintlastic SA MidPly

Self-adhered, fiberglass-reinforced SBS-modified bitumen base or interply in the Flintlastic SA roof system, for use over approved low-slope substrates. It is 2.8 mm (110 mils) thick, weighs 63 lbs per roll and covers one square, with a top film and pre-printed lap lines. CertainTeed lists it as meeting ASTM D6163 Grade S Type I and ASTM D1970, and it is listed in a Miami-Dade underlayment systems approval. The page states a 25-year standard warranty for the two-ply system, extendable for credentialed contractors.