Weight: 20 L 190 Sealer, commonly used for porous surfaces, is an invisible, penetrating sealer that protects against stains, soiling, discolouration and efflorescence. The clear, non-flammable solution will turn to an invisible water repellant coating when cured. When used on grout joints, brick masonry or porous tile it will reduce staining and water absorption. Will not change the colour of the tile, masonry or grout.