Hello PoolDoc - I agree I don't want anyone doing something they're not acustomed to doing, but all of the IGP that were build around here in the early 90's, 80's and prior had the vinyl liner secured underneath the coping during the initial installation. Those liners generally lasted 20+ years - According to every pool contractor I speak to now, they simply say we do not do that way anymore - we use a liner track and the lifetime of the liner is about 1/2 as long. Since my coping needed to be replaced I thought it logical to do the liner the way it was orginally constructed.

I'm very surprised that they stopped doing this - even for new pools? I was hoping someone could provide an explanation or recommendation. Thank you