A cement-based, quick set hydraulic cement for concrete and masonry. It is a dry powder mixed with water to putty consistency that sets in 3-5 minutes to stop flowing water or seepage under pressure through holes and cracks, and can even be applied under water. It expands as it sets to provide a permanent, high strength patch. Ideal to repair holes and cracks in concrete and masonry walls, wall-floor joints, swimming pools, water storage tanks, fountains, ponds, and drains.

Also for sealing around pipe/conduit or anchor hooks, bolts, metal to concrete.

Coverage: 1 pound fills a crack 3/4 inches wide by 3/4 inches deep by 2.5 feet length, or 16.8 cubic inches.