Tuff-Boy 1102 Masonry Sealer is a 100% micronized acrylic one component primer/sealer designed for use on various types of architectural masonry surfaces in commercial, residential,institutional, or industrial environments where adhesion could be a problem due to light chalk, high alkalinity, or surfaces where a cement wash is present. Tuff-Boy 1102 may be applied over properly aged stucco, brick, concrete block, and tilt-up concrete panels. It is supplied at a thin viscosity so that it will penetrate loose chalk and other foreign contaminants and then tie the chalk down to the substrate; thus, providing a sound base to which the topcoat may be applied. Tuff-Boy 1102 not only has excellent adhesion, but excellent resistance to alkalinity and efflorescence, and can be applied to fresh masonry after only seven days of curing with a pH value below 13. This product is available is clear and guide white. This product is not designed for use as a finish coat.