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 basemakes it an ideal product for sealing leaks around roofs, windows and doors. It can also be topcoated with oil or latex paints. Suggested Uses: Roof areas: Skylights Windows Flashings Air vents Driveway and sidewalk cracks Gutters Shingles