Floating liner recurring issue

[mpoulin]

It's possible for water pressure UNDER the concrete deck to be higher than the deck, if water is flowing under the deck, along grade lines.

I think my deck is part of the problem too. It isn't concrete, it is wooden. Water easily passes through it. It is also in terrible shape. I plan on replacing it soon with concrete. Hopefully this will also help.

[PoolDoc]

Actually, I doubt that it is a problem. Concrete deck could retain water, and allow pressures under the deck to exceed that of water on bare ground. A wooden deck cannot do so.

That being the case, I suspect that a short-term solution may be to simply overfill your pool any time the ground is saturated.