What is a PTV Value?
“PEI” is the abbreviation for Porcelain Enamel Institute. A PEI Rating is given to a tile product based the hardness of its glaze. This hardness is determined by the manufacturer using a standardized test. The results of this test will determine the proper usage of a product.
It is important to note that the PEI Rating is the result of testing glaze wear only, and not slip-resistance. For example: imagine old carpet on a kitchen floor. There would be noticeably more wear in front of the sink, the cook top/oven and the refrigerator than other areas of the kitchen. These are known as “pivot-points” and they affect glazed tile products as well – although at a significantly slower rate than the majority of other floor coverings.