Pool Care /
How to Patch an Above Ground Pool Liner
A small above-ground pool liner hole can often be patched with the right vinyl kit if the damage is minor, the surface is prepared, and the liner is still sound.
Archive date: this article was written for PoolSkimmer on Oct 24, 2026 and given the earlier archive date of May 31, 2025 so the blog reads as an organized archive. It was not published on that date.
Is it possible to patch an above ground pool liner?
In most cases, yes. A vinyl patch kit will do the job for a short tear or small hole in an above ground liner. You have to be sure to follow the instructions and pick the method that suits the damage. But if the liner is getting brittle, the tear is on the increase, or you are dealing with damage close to a fitting or seam, it is wiser to put in a new one or get some professional assistance.
How to tell if a liner is worth the trouble
The best time to put on a patch is when the vinyl has some give and the problem is not extensive. It is unlikely to hold up if you are faced with a long, jagged rip that won’t stop widening, or if the liner is riddled with weak spots. The same goes for a leak at a corner or stress point, or vinyl that has gone dry and cracked. Remember that a patch is just a repair; it does not fix an old liner. If you have done the work properly and the water is still going, there is no point in repeating the process. Reassess the situation.
Safest way to go about a patch
1. For your own safety and to protect the equipment, shut off the pump before you start working near any circulation openings or the skimmer. 2. Find the source of the loss – look for a soft spot or a visible cut. 3. Only lower the water as the location or kit demands to make the damage accessible. 4. Make sure the area is free of slime, algae and dirt so nothing interferes with the bond. 5. If the kit calls for a dry application, dry it off. Do not assume all vinyl patches can be used underwater. 6. Where you can, round off the edges of the patch; sharp corners have a tendency to peel. 7. Put the patch down firmly and work out any air bubbles. 8. Let it be for the full cure time the manufacturer specifies.
Wear gloves and other PPE as is appropriate and heed the guidance on the chemical labels and equipment manual.
Inside or outside the pool?
It is a matter of where the leak is and what the kit is for. An underwater patch can be put on from inside without having to drain the pool. Above the waterline you will want to let the water level drop to get the area dry and the liner steady. Whatever you do, do not make do with some household glue or tape not intended for pool liners. They will only fail in the water or harm the vinyl.
Why do patches sometimes fail?
Usually for straightforward reasons:
- The surface was not clean of sludge or grime.
- A wet patch was used on a dry job, or vice versa.
- The vinyl was moving or wrinkled when applied.
- The adhesive was disturbed before it had a chance to set.
- The leak was in the plumbing to begin with, not the liner.
Time to call in a pro?
If the water is dropping fast, the leak is hard to pin down, or it is situated by a support or seam, a qualified professional should be called. An older liner with several weak points is another reason to get help. A pro can tell you if the issue is with the liner, the plumbing or something else entirely.
Making the repair stand the test of time
Once the patch is in place, stick to the manual for maintaining the circulation and keeping the pool in good order. That kind of care takes the stress off the liner and lets you see new problems early on. Should the patch lift or the hole come back, do not pile on more repairs to a failing spot. Replacing it is the better long-term solution.
Sources and further reading
- [Hayward: Weekly pool maintenance](https://www.hayward.com/maintenance/weekly-pool-maintenance)