BRT-801 is a black, U.V. resistance hip and ridge sealant for under tile and roof applications. BRT-801 has an aggressive grip, stays flexible during application, assuring immediate sealing on contact, and superior long-term adhesion. Providing leak proof results, this butyl adhesive/sealant is asphalt and solvent free. BRT-801 is also reversed-rolled for easy, fast application. Thickness: 30 Mils Tensile Strength: 445 psi average Adhesive: THE GRAY MATTER™ Elastomeric Modified Butyl Rubber