It is possible that a very thin film of grout has been left on the surface of the tiles making them appear dull. In this case, we recommend the use of our TileKleen Tile & Grout Revive. This product removes grout scum with ease on newly laid tiles. (must be used per manufacturer’s written instructions) making sure that you try it out first on a less noticeable area (behind a door or cupboard for example), to ensure it does not damage the tile and make sure you rinse the floor thoroughly with clean water after treatment. This product can also be used on exsisting tiles, concrete, terracotta, stenciled and exposed?aggregate.
Avoid contact with Natural Stone and Stainless steel products.