Economical easy-to-apply, penetrating sealer that resists most common oil-based and water-based stains. Unlike other sealers, it will not leave a difficult-to-remove residue on the surface. Low odor, water-based formula. Seals Saltillo, terra cotta, quarry, and some porcelain tile, grout, brick, concrete, masonry, and natural stone. Interior and exterior use.