DRYLOK Floor and Wall Masonry (formerly DRYLOK Clear) Waterproofer is the first non-pigmented masonry Waterproofer specifically formulated for use on masonry floor and wall surfaces. This Patent Pending Technology provides a durable, waterproof, easy to clean, non-yellowing high gloss finish. It's perfect for waterproofing interior and exterior concrete floors, poured concrete walls, split-faced block, concrete and cinder block, stone, brick, stucco and pre-cast decorative items. DRYLOK Floor and Wall Masonry Waterproofer incorporates environmentally safe green biocides to resist the growth of mildew on the dry paint film. DRYLOK Floor and Wall Masonry Waterproofer has been tested in accordance to requirements of ASTM D 16 - Standard Terminology for Paint, Related Coatings, Materials and Applications; ASTM D 1653 Method A (Dry Cup) - Standard Test Methods for Water Vapor Transmission of Organic Coating Films; ASTM D 6904 - Standard Practice for Resistance to Wind-Driven Rain for Exterior Coatings Applied to Masonry and ASTM D 7088 - Standard Practice for Resistance to Hydrostatic Pressure for Coatings Used in Below Grade Applications Applied to Masonry.