Non-porcelain tile is easier to work with
Non-porcelain tiles are made primarily of clay mixed with minerals and water. The material is then fired to solidify the tiles into a bisque form. This process creates tile that isn’t as hard as porcelain, so it can be worked more easily with basic snap cutters and nippers instead of a wet saw. A sealer and a glaze are applied to the surface of nonporcelain tile to create color and texture before the tile receives a second firing.
Non-porcelain tile’s main weakness is that it has a water-absorption rate of greater than 0.5%. As a result, the tile doesn’t perform nearly as well as unglazed porcelain tile in outdoor freeze/thaw environments.