Polished Vs. Unpolished Porcelain Tile | Hunker
Sep 17, 2018· Porcelain tiles can be ground down to a high polish in the same way marble or granite tiles are. The difference is that the grinding process can create microscopic pores in the surface of the tile, which the high polish masks from view. These tiny pores make the tile likely to hold on to grout and to collect surface dirt.