2" styrofoam below sand?

[MarkC]

I believe the cove is there to prevent the liner from trying to push under the pool walls.

[medvampire]

denanbob
I will call tommorrow or if you like the number is
(865) 694-4126
Their web site is
http://www.poolplaceonline.com/

I didnt see the name of the product but it may be something to look at.
Later
Steve