Can it hurt to seal porcelain tile?
I have porcelain tile from Crossville and I'm using a combination of shiny and textured tiles on the floor, the shiny ones as accents. The Crossville web site says that the shiny tiles should be sealed with a water-based sealer before grouting. I don't understand why this should be done, but we'll do it anyway.
My question is, can we just seal the whole floor, shiny and matte, just for ease of not targeting a few smaller tiles?