Tuff-Boy 1104 is a pigmented one component modified epoxy primer/sealer designed to be applied to masonry surfaces where adhesion could be a problem such as heavily chalked masonry surfaces or surfaces where a cement wash is present. 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. Another distinct advantage is the product's pigmentation, which both enables the applicator to identify which areas have been sealed as well as providing hiding for subsequent coatings. Due to the nature of this product’s epoxy resin system, Tuff-Boy 1104 has unsurpassed adhesion and outstanding alkali resistance.