A colourless barrier that helps to protect porous wall and floor grout joints from penetration by water, dirt, oil, grease and limescale, making treated surfaces easier to keep clean. Ideal for use in wet rooms and shower enclosures. Used as a top coat, this product is an easy way to further protect natural stone and all other types of masonry surface. Overspray on most surfaces will completely dissipate and not leave any hard-to-remove residue. When sealing a porous stone, it is advisable to use a suitable liquid impregnator such as LTP Mattstone before finishing with LTP Grout & Tile Protector to achieve the best result.