Custom Building Products 1 lb. Sulfamic Acid Grout Cleaner

Custom Building Products 1 lb. Sulfamic Acid Grout Cleaner features concentrated crystals designed to mix easily with water, producing a mild and effective acid cleaner. It is specially formulated to remove dried Portland cement, stubborn grout haze, and mortar residue from a variety of surfaces including ceramic tile, concrete, and masonry. This versatile cleaner is safe for use on colored grouts and works effectively to eliminate hard water deposits and efflorescence. It can also be used to etch concrete surfaces in preparation for sealing or finishing applications.