A semimastic brushing-grade material consisting of pliable asphalt, quick-drying petroleum solvents, and tough fibers.

Also known as blind-nailing or SIS cement. Specifically blended to set slowly, allowing the roofing membrane to expand, contract, and flatten naturally without buckles and wrinkles. Acid and alkali resistant. 100% ASBESTOS FREE.

Serves as an adhesive between plies of 19" selvedge, smooth or mineral-surfaced roll roofing and laps for cold-applied built-up roofing applications.