511 seal and enhance Is a unique, solvent-base formula designed to eliminate the need to use an impregnator before using a color enhancer for maximum stain protection and superior color enhancement. 511 seal and enhance is safe for use on granite, marble, limestone, natural stone, slate, ceramic tile, quarry tile and grout surfaces. 511 seal and enhance will enhance the color and rejuvenate the appearance of tumbled, honed, acid-washed, sandblasted, flamed, textured, even polished stone and tile surfaces. In addition, 511 seal and enhance revitalizes old and worn stone and tile installations. It can be used successfully in both interior and exterior environments and is freeze and thaw-resistant.