13+ Pei Tile Rating. Web pei rating on glazed tile. The porcelain enamel institute ( pei ) came up with a testing.
Web group 1 (pei 1) the tiles falling under group 1 are suitable for areas where people use. Web pei durability rating helps you assess whether a tile is resistant enough to. Web the ratings for the pei rating scale range from group 0 to group 6.
