For installation under new shingles to prevent leaks from ice build-up and wind-driven rain. Also for use under shakes or metal roofing. Asphalt composition fortified with rubber (SBS). Flexible and elastic at low temperatures. Top surface coated with sand to provide a safe, non-slip working area. Split-back release film, self-adhering, easy to apply, easy to cut to size. Self-sealing around nails. Will not rot or decompose. Meets ASTM D1970; U.L. Class A and C fire rating.
: This product can expose you to chemicals including Silica, crystalline, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.p65Warnings.ca.gov