Forms a colourless barrier and 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 up 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 ROCATEX Natural Finish Sealer or ROCATEX Colour Intensifier before finishing with ROCATEX Grout Protector to achieve the best result