How do glazed and unglazed floor tiles differ?
Glazed floor tiles have been coated with a glassy finish which often incorporates color, texture, or design, and is fired at very high temperatures. Unglazed floor tiles do not have this surface as the color comes from the body of the tile itself. This can be natural color from the clay or other minerals or can be added to the mixture before forming and firing the tiles. Because the color extends through the entire tile, these are great for high traffic areas as they do not show wear as easily.