Should Glazed Porcelain Tile Be Sealed?

The surface of most ceramic and porcelain tile does not need to be sealed, although some require a light application of a penetrating sealer to fill the micro pores on the surface of the tile. However, the grout joint between the tiles is usually very porous and generally made of a cement-based material.

Why do glazed porcelain tiles need sealing?

Sealing tiles and grout reduces the porosity of the materials and protects the tiled surface, increasing its resistance to dirt, spills, staining and general wear. Sealing tiles and grout means they will last longer, look better and be easier to keep clean.

Do gloss porcelain tiles need sealing?

Some tiles are sealed as part of the manufacturing process, whilst others are left unfinished. Most polished porcelain needs sealing. ... Most polished porcelain will have had some factory wax-type seal applied, so it's always advisable to clean the tiles back with LTP Grimex before sealing with LTP MPG.