GLAZED PORCELAIN TILE
Glazed porcelain tiles do not need to be sealed
Generally, all stone must be sealed. Follow the manufacturer’s recommendations for the product you choose. - Know what the surface preparation (polished, honed or natural) coupled with the density and porosity of the stone will determine the best type (petroleum or water based) of sealer to be used. The other consideration is that you use the best product the budget will allow.
Generally, glazed tile requires no sealer. Some unglazed tile requires sealer. Know the type of tile you are installing. Test it with a small amount of water. If the surface darkens, it absorbs water and needs to be sealed. - Generally cementitious grouts require sealing while specialty grouts like epoxy and furans do not. If the grout darkens with water, it needs a sealer. When using the STAINMASTER™ Enhanced Grout Mix you do not need to seal your grout—the seal will be built-in when dry.