511 Impregnator Gal. The Original Penetrating Sealer WATER, STAIN & SLIP PROTECTION FOR:Sanded Grout,Quarry Tile, Ceramic Tile,Glazed Tile,Porcelain Tile,Polished Granite,Polished Marble,Terrazzo,Concrete,Brick Stucco,Slate,Quartz,Travertine and Agglomerate Interior & Exterior Use,Weather Resistant,Less Expensive,OK for Food Areas,Superior Coverage, Easy to Use AND UV Transparent