Stone is a beautiful yet porous product and it therefore must be protected from stains with a sealer. This is true for some grouts as well. Granite sealer products (as well as marble and softer stone sealers) fill the pores of the stone to repel stain or corrosion producing liquids from penetrating and causing blemishes. Most formulas can be used as marble sealer or granite sealer. We carry a variety of grout and stone sealers from Laticrete, Stonetech, Miracle Sealants, Miracote, Tenax and Glaze n' Seal.