UGL Drylok Natural Look Latex Concrete, Brick And Stone Sealer. Penetrates deep to seal and protect masonry against acids, alkalis, household chemicals, gasoline, oil and salt. A non-yellowing protective coating that can be used as a sealer or concrete curing membrane. Matte finish with minimal film build for a natural appearance, moisture vapor barrier and protection level 15% solids. Use on vertical and horizontal surfaces, easy cleanup with warm, soapy water, plus more.