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 More local CertainTeed Territory Manager to request a sample and demonstration of Flintlastic® FR-P. See Less