GE Silicone 2+ 10.1 Oz. Black Roof 100% Silicone Sealant

100% Silicone. Weatherproof - sun-proof, freeze-proof, flexible. 30-minute rain-ready - permanently waterproof. Mold and mildew resistant. Faster cure - 30-minute dry, 24 hour full cure. Lifetime guarantee - will not shrink, crack, break down or wash away.