Porcelain tile is used in residential and commercial settings. Sturdier than ceramic tile and less likely to chip or crack, it is maintenance-free and recommended for all interior applications, floors and walls. In fact, most contractors recommend porcelain for all floor tiles, as they are scratch proof, stain proof, fire proof and waterproof. Many of the newer styles are made of porcelain and use digital technology to enhance the quality of the real image. Some are even frost proof so they can be used in outdoor projects.