This is a multi-purpose sealant that seals small cracks and does not lose flexibility. Resists water, protects against UV sunlight, and will not crack in cold temperatures. The thermoplastic elastomer base makes it an ideal product for sealing leaks around roofs, windows and doors. Can be top coated with oil or latex paints as well. When covering a broad area it is recommended that two coats be applied to ensure a non-porous final coating. Allow first coat to dry to touch (about 8-10 minutes) before applying the second and final coat.