Key Features;Specifically developed for flowing into horizontal crevices;Non-staining -resistant to moisture and staining and has virtually no shrinkage;End dams in glazing systems;Flashing and below grade waterproofing membranes;Polyurethane sealant construction grade self-leveling 29 ounce cartridge color=gray Use for sealing expansion joints in concrete slabs and sealing cracks in concrete floors driveways patios steps basements and pool decks. Provides superior adhesion flexibility and durability. Meets ASTM C 920 Type S Grade P Class 25.Quikrete? (r) Polyurethane self-leveling sealant is a high-performance construction-grade polyurethane sealant used for sealing cracks and joints in horizontal concrete surfaces. Self-leveling formula provides great adhesion flexibility and durability. Use for sealing expansion joints in concrete slabs and sealing cracks in concrete floors driveways patios steps basements and pool decks. Provides superior adhesion flexibility and durability. Meets ASTM C 920 Type S Grade P Class 25.