CertainTeed's most robust fire resistant, polyester-reinforced, SBS-modified bitumen cap sheet, Flintlastic® Premium FR-P, is valued for its physical properties, fire performance, high elasticity and decades of consistent quality. This 165 mil membrane is manufactured with more asphalt and a heavier polyester reinforcement when compared to its "younger brother", Flintlastic® FR-P, to qualify for and support ASTM "type II" SBS/mop-applied specifications. Premium FR-P offers superior durability and resistance to weathering. Premium FR-P is mop applied with hot asphalt or cold adhesive such as FlintBond® Brush and is available in White and CoolStar® highly reflective surfacing. 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 o...See Moref 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 local CertainTeed Territory Manager to request a sample and demonstration of Flintlastic® Premium FR-P. See Less