brush/roll on high performance coating that can be applied over many surfaces including concrete, masonry, wood, brick, metal foam and more. It forms a durable, seamless, waterproof membrane. For interior and exterior use. Suitable for applications to steel and waterproofing including bathrooms, basements, roofs, rain gutters, skylights, pipes, balconies & decks, planter boxes, shower pan liners, ponds & more!