Does unglazed porcelain tile need to be sealed?
Important Considerations: The surfaces of most ceramic and porcelain tiles do 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, all unglazed tiles including dense porcelains, should be sealed prior to grouting.
How do you seal unglazed tiles?
Dip your paint brush into the can of penetrating sealer, wetting an inch or two of the tip. Slowly brush it onto the surface of the tiles, using short, even strokes in one direction. Don’t brush it into the spaces between the tiles. Let the sealant dry to the touch (an hour or two).
Why do I need to seal porcelain tiles?
Many consumers believe that a polished porcelain tile offers the best resistance to dirt, as the surface appears to be completely impervious. However, during the polishing process, micro-pores are opened up. Some polished porcelains are sealed during manufacture to protect them during installation.
How do you clean and seal porcelain tiles?
If you have heavy grease and oil stains, pre-clean using an alkaline cleaner formulated for ceramic and porcelain tile. This will cut through tough grease and soil stains. After restoring your tile and grout, remember to seal with an impregnating sealer to guard against future stains.