I just bought a house with an above-ground pool in April. I have several neighborhood kids that have used the pool before I purchased it. Yesterday, one of them mentioned to me that he saw the liner was wrinkling where it had not been wrinkled last year. I remember seeing these wrinkles when the pool was opened by myself and the former owner and he (the former owner) did not point out the wrinkles as a problem. Are they or is it just cosmetic?

More worrisome is the 2 foot long bubble at the top of the liner near where the liner meets whatever it is that holds the liner onto the pool. I have not noticed a leak nor have I noticed that the liner is pulled away from the ring that holds it on. I AM VERY WORRIED. What do I do? Can it be fixed? Do I need to do anything right now? It feels like air beneath the liner not water. Any suggestions? Thank you.

The wrinkle is pretty much cosmetic at this point and almost impossible to remove without draining the pool. Likely the liner would be brittle if its more than 5 years old. The bigger worry is the bubble and the detactment. Repair will only work if the vinyl is still soft so you may consider a new liner in the fall. The fix requires you to remove several sections of the top plate so you can get to the retaining clips and the liner. If you are very lucky, and its hot as heck, the liner may stretch enounh to be pulled back over the edge and down. Then reattach the clips.