Abrasion Resistance

Specimens are tested using a Wyzenbeek Precision Wear Tester using a tension of 6 pounds force and a load of 2 pounds force. The abradant is 220-grit silicon carbide-coated abrasive sheet. After the requisite number of cycles, wall covering in Categories III and IV shall show no evidence of appreciable change to the decorative surface. Wall covering in Categories V and VI shall show no evidence of fiber show–through or damage to the supporting substrate.