The GRANITOGRES line includes various types of fully vitrified unglazed porcelain stoneware, all sharing a warm, rustic appearance and each one inspired by a different ancient material or natural stone. The technical characteristics are the same as with the regular GRANITOGRES line, meaning very tough tiles that stand up to wear, harsh chemical agents, and frost. They resist spotting and withstand extraordinary physical and mechanical stress. They are not altered by atmospheric agents, do not hold dirt, are fireproof. The slightly textured surface reduces slipperiness even when the tiles are wet, making them suitable for outdoor installations. Various special trims complete the line.