There are two types of sealers to use on tiles, one penetrates the tile leaving a natural look and the other one is topical so it sits on top of the tile and leaves a shine. Both types are designed to improve defence against dirt, spills and deep staining of the tile.
Not all tiles need to be sealed, if your tile is glazed, ceramic or porcelain it probably won’t need to be sealed because the glaze is there as the protection as well as giving it the look, but there are some exceptions so check with your manufacturer to be sure.
If your tile is a natural stone such as travertine, granite, slate, marble, limestone etc it will definitely need to be sealed to give protection as stone is naturally porous and will absorb any spills and dirt staining fairly easily.
Tile Rescue have a premium sealer to suit each situation weather indoors or outdoors and our technicians are trained in this area to give you the right advice on what you should be using.