Zinsser 12 oz. WaterTite Etch and Cleaner (6-Pack)

Zinsser 12 oz. Watertite Etch and Cleaner (Case of 6) is a sulfuric acid-based etching and cleaning solution. Ideal for removing tough, caked-on efflorescence and excess mortar build-up on concrete, stone, brick, tile and galvanized metal when mixed with warm water. It also provides a light surface etch to promote the coating penetration and adhesion over concrete and other masonry surfaces.