A colourless barrier that helps to protect porous wall and floor grout joints from penetration by water, dirt, oil, grease and limescale. Makes treated surfaces easier to keep clean. Ideal for use in wet areas. Used as a top coat, this product is an easy way to further protect natural stone and all other masonry surfaces. When sealing a porous stone it is advisable to seal with a suitable liquid impregnator before finishing with LTP Grout & Tile Protector.