The term ‘porcelain grès’ is defined as a particular type of compact structure ceramic tile, made of clays, feldspars, kaolins, sand and colourants, that are ground and then atomized to obtain a powder with uniform granularity appropriate to the pressing. The firing process determines the ceramisation/vitrification of the mixture, givin it its typical characteristics such as abrasion
resistance, impermeability and longevity.