tile sealer is an essential part to any tile installation. the reference "tile sealer" alone can be a vague description. tile is manufactured or fabricated from all types of material. this results in a need for the appropriate type of tile sealer for the variety of tile surfaces available. most any of glaze n seal's sealers can be used as a tile sealer. common ceramic glazed or porcelain glazed tiles have a non-porous surface because of the fired glazing and do not require a tile sealer at all, but the grout in between the glazed tile would benefits from being sealed. generally a natural look penetrating sealer can be used on a sanded or non-sanded grout. it is easy to apply and the excess penetrating sealer is easily wiped off the surface of the tile. a film forming sealers provides an acrylic coating of protection for grout, but care must be given to remove any acrylic tile sealer that may get onto the tile before it dries. penetrating tile sealers are commonly used on polished and honed natural stone tiles as well as other denser tile surfaces like quarry tile, terrazzo and quartzite, but can also be used on more porous tile. a film forming tile sealer will provide a clear acrylic barrier of protection and also enhance the tile by deepening the color and leaving a glossy appearance on the surface. film forming tile sealer needs to penetrate the surface to bond and should not be used on dense tile or stone.