Black Jack Rubr-Coat #57 is a premium rubberized coating for waterproofing roofs and foundations. The addition of rubber enhances performance by improving crack resistance, life expectancy and adds increased waterproofing protection. Product is black in color. As a roof coating, this product seals worn out roof surfaces and provides a tough flexible waterproof seal. As a foundation coating, this product seals masonry, foam board insulation, wood and metal surfaces to protect, preserve and damp-proof, below grade surfaces. This multi-use product forms a tough rubberized seal for lasting protection on a variety of surfaces. Rubr-coat may be used to adhere foam board insulation to masonry surfaces. When used to coat the exterior surface this product will act as a protective coating for the foam board.