Damtite 21 Lb. White Powder Masonry Waterproofer

A Portland cement-based waterproofing coating for sealing, protecting, and decorating vertical walls constructed of concrete, masonry, brick, or stucco. Just add the powder to water. For previously painted or nonporous surfaces use Damtite Bonding Liquid. It eliminates dampness and resists mildew, flaking, or chalking while beautifying and sealing all pores and voids. Unlike ready-mixed paints that can only be applied to dry surfaces, it is made to be used on damp walls. Safe for coating drinking water holding tanks or cisterns, birdbaths, and fountains. Reduces radon gas penetration through concrete block walls.