In our many years of experience with chrome platers we have established that if liner failure occurs, it will most frequently be at the fluid/air exchange. As gases form at this point the plasticizer will migrate leaving the material stiff and brittle leading to eventual cracking. It is our standard practice to recommend, to all our customers with chrome tanks, a skirt or double lining over the top 12 to 24 inches of the tank. This doubles the thickness and will in effect add years to the life of a liner. We’ve identified skirted premium material tank liners lasting 8 years in hard-chrome tanks.