This rubber liner is 8 years old, AND IT IS STILL SHRINKING! The roof on this tank suffered damage from the recent hurricane, and it has been empty for 2 months. Now the roof has been fixed, but as you can see the liner has shrunken again. Over the years we have had to relax it several times, now there is no more extra liner left, so it will have to be replaced...Never use EPDM...you will regret it.