KEY MORTAR STD is a trowel applied resin flooring system consisting of 100% solids epoxy and graded aggregates that provide heavy-duty protection at 3/16 - 1/4 inch or greater. When grouted and sealed, Key Mortar STD eliminates porosity and produces a dense, skid-inhibiting finish that will minimize dirt and chemical penetration. Key Mortar STD may be sealed to meet your facilities need to enhance abrasion resistance, gloss retention and non-skid properties.