CertainTeed's fire resistant, polyester-reinforced, SBS-modified bitumen cap sheet, Flintlastic® FR-P, is valued for its fire performance, high elasticity and decades of consistent quality. This 165-mil membrane is manufactured with more asphalt and fire resistant additives when compared to its "cousin", Flintlastic® GMS - CertainTeed's workhorse granulated, mop-applied, SBS-modified bitumen cap sheet. FR-P offers superior durability and resistance to weathering. FR-P is mop applied with hot asphalt or cold adhesive such as FlintBond® Brush. Face it - some old dogs don’t need new tricks, and CertainTeed hot asphalt and cold adhesive low-slope roof systems have consistently delivered on the promise of protection for generations. These systems offer multiple watertight layers with unparalleled bond strength. So when the risk of a roof leak means more than just a maintenance nuisance, trust what works and spend the time to install peace-of-mind. Reach out to your...See Morelocal CertainTeed Territory Manager to request a sample and demonstration of Flintlastic® FR-P. See Less