A nonasphaltic, rubber based product engineered for superior elongation and tensile strength. It has excellent UV resistance and adhesion to most surfaces. Formulated for high-stress applications, it provides a strong elastomeric film that is nonflammable for greater safety, handling, and storage purposes. Contains pitch pan sealant. Seals around laps, flashings, fasteners, panels, walls, curbs, roof projections, and below-grade damp proofing membranes. Repairs properly prepared splits, breaks, and holes. Has a maximum 1 year shelf life. Coverage: Up to 1" wet film thickness, 25 sq. ft. per gallon on a 3-course application (mastic/reinforcement/mastic), up to 1" thick in pitch pans. Color: Black.