A non-shrink, high-strength waterproof mortar for concrete, masonry, brick, stone and stucco. Mix with water into a putty consistency. Setsin 3-5 minutes to stop active water leaks and seepage under pressure through holes, cracks, wall-floor joints, swimming pools, water storage tanks, fountains, ponds, and drains. Can be applied under water so pools do not have to be drained for crack repair. Also use to seal around pipe and to anchor hooks, bolts, and metal to concrete. Does not contain metallic aggregates or corrosive agents. Will not shrink or oxidize. Wear eye protection, dust mask and rubber gloves. For over 63 years, Damtite has been one of North Americas most respected manufacturer of specialty masonry waterproofing and repair products. Damtite brand was founded in 1953 in Atlanta by a Georgia Tech chemical engineer. In 2001, a West Virginia University industrial engineer acquired the brand from the founder and relocated to Monongahela, Pennsylvania. Our environmental stewardship and corporate responsibility contribute to our leadership status in the industry.