Floating liner recurring issue

[PoolDoc]

Each time this happened to me my pool was already full of water.

Yes, I've seen that happen, too. But "full of water" usually doesn't mean "full to overflowing", but rather 'at the proper level'. Unfortunately, this usually means 6 - 12" below deck level.

The water level in the pool needs to be HIGHER than the water level in the ground, or rather, higher than the hydrostatic pressure of the water around the pool. 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.

But, the odds are, you can stop the liner from floating, if you keep the pool 'full to over flowing' during periods when the ground is saturated. This won't damage most pools, but will unfortunately prevent the skimmer from operating properly.

[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.