Uni-Seal Max is a professional grade penetrating waterproofer/moisture reducer for protecting all porous masonry, such as concrete, brick, block, natural stone, artificial stone, mortar, stucco, grout, unglazed tile, terra cotta and more. One step application. Freeze/thaw and salt resistance. Limits stains and mold. Maintains traction. Permanent chemical bond. Dries flat and clear. Suitable for exterior/interior, vertical/horizontal and above/below grade.