Damtite Waterproofing 07502 Water Proof Hydraulic Cement, 50LbHighlights: Pail Size: 50 Lb Interior Exterior Ready to mix with water Waterproof Concrete Masonry One pound fills a crack 3 4"W x 3 4"D x 2. 5' length, or 16. 8 cubic inches Also used for sealing around pipe conduit or to anchor hooks, bolts, and metal to concrete Stops flowing water or seepage under pressure through holes and cracks, and can even be applied under water Expands as it sets to provide a permanent, high strength patch on cracks in