I am having a new liner installed in my pool. The job is partially done with approximately 8" or water in the shallow end, it appears to me that the liner is actually too small. The installer said he had the liner made with a 4" cove, however my pool never had a cove in the bottom.
The pool is 19x35 grecian and the liner is not even close to touching the wall in the corners and I can't imagine water pressure stretching the liner that much. I would guess that there is 5-6" behind the liner in the corners right now. Will the water pressure acutally push the liner into the corners? There is also 2-3" of space behind the liner in the shallow section which might be due to having the cove in the liner but I'm not sure if that is the entire problem.
My biggest concern is that the coping is actually being pulled away from the concrete on one side of the pool. It looks to me like there is too much pressure from the liner pulling the coping. The coping is still attached to the top of the pool wall. I can't tell if the coping is just twisting or if the pool wall has actually pulled in some. The liner installer is trying to blame the problem on the concrete not being poured correctly. I tried to pull the liner out of the bead track but it is just too tight to lift it up at all in order to get the bead out. I think I'll have to pump some water out to relieve enough pressure.