The Concrete Supplement Company has been serving New England since 1961. We offer a variety of waterproofing, dampproofing, coating, and air/vapor barrier systems designed to protect your building's structural components and interior areas from water & moisture infiltration. All of our workmanship and materials are waranteed. We are committed to providing you with a high performance solution to keep the water and mosture where it belongs . . . on the outside of your building.