Drylok High-Gloss Clear Floor and Wall Masonry Waterproof Sealer 1 gal. (Pack of 2)Dryloksealer is the first non pigmented masonry waterproofer formulated explicitly as a masonry floor and wall sealer. The patent pending technology of this waterproof sealer provides a durable, easy to clean, non yellowing high gloss finish. This sealer is perfect for giving waterproof coating to interior and exterior concrete floors. The masonry waterproof sealer is also ideal for poured concrete walls, split faced blocks, concrete and cinder block,