Lexel is a 1-part co-polymer rubber based sealant. It has excellent adhesion to a wide variety of materials, even after 7 days water immersion. Although it's tough and resists tearing, Lexel dries to a soft rubber. This allows it to stretch and compress with joint movement. Lexel is solvent-based and cures by solvent evaporation. It is paintable and mildew resistant. Firmly binds to almost any surface wood, metal, brick, concrete, tile, glass, even plastic!