A discussion of polished porcelain tiles would not be complete without highlighting their strong points.
One strong point is with regard to design. Some polished porcelain tiles have been produced to allow the bisque (tile body) to show through the face of the tile. The result is a deeper, more realistic dimension.
A second bonus with porcelain tiles is that their hardness and durability give them good chip resistance. However, in the event that the tile is chipped, it has a backup plan. If it is a full bodied tile, the area exposed by the chip will be the same colour as the tile and therefore would not necessarily need to be replaced.
When porcelain tiles are glazed or if the polished ones are sealed, they will be extremely resistant to staining in comparison to other varieties of stone tiles. This is a plus in kitchen settings where liquids tend to take the form of soups, sauces, or beverages, all containing colours that more than likely will clash with your home décor.
Unglazed porcelain is a favorite choice for areas of high foot traffic. This is because of the additional traction or friction it provides due to its lack of glaze. Secondly, this lack of glaze means that it can take more of a beating than a glazed surface which will show up wear and tear more readily and diminish the overall aesthetic beauty of the tiles. Thus you may encounter unglazed porcelain tiles in malls, supermarkets, and the like.
Even if the tiles do not absorb much liquid, if the liquid is acidic and damages the tile, the moisture and stain resistance does not mean much. Thus, porcelain tiles score another point on the board since they are much more resistant to damage caused by citric acid (as in orange juice), wine, mustard and other household chemicals.