Premium brush or squeegee grade, waterproof adhesive made from asphalt, solvents, and organic fibers. Replacement for hot asphalt in built-up roofing (BUR) applications. Designed for bonding layers of asphalt-coated base sheets. Eliminates burn and fire hazards of hot asphalt. Greater cohesive strength for a reliable roof and cold weather flexibility than hot asphalt. Recommended for use in built-up roofing (BUR) applications with: 25 lb. or heavier asphalt-coated fiberglass base sheets, conventional mineral surfaced cap sheet, polyester fabric, and bonding gravel or granule surfacing. Do not use with No. 15 or 30 saturated felts. Suitable for application with a notched squeegee or 4-knot roofing brush. Coverage varies with smoothness and porosity of surface coated. UL classified for Class A and B fire rated roof coatings. Conforms to ASTM D-3019 Type III.