Seymour 20-148 Seal-It Multi Purpose Sealant Black
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 topcoated with oil or latex paints as well.
Driveway and sidewalk cracks