Bullet Tools EZ Tile Grout & Perimeter Sealant for ceramic, vinyl, porcelain and more, Biscuit Uses caulk gun for cleaner, faster application Water-proof, stain-resistant and strong yet flexible bond to tile Impervious to household cleansers & UV light Fully sealed to prevent mold growth Seals on average 30 tiles (12 in x 12 in) per tube