511 Seal & 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 & Enhance is safe for use on granite, marble, limestone, natural stone, slate, ceramic tile, quarry tile, grout, concrete and masonry surfaces. 511 Seal & 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 & Enhance revitalizes old and worn stone and tile installations. It can be used successfully in both interior and exterior environments and is freeze/thaw resistant.