Pool Care /
How to Replace an Above-Ground Pool Liner Safely
To replace an above-ground pool liner, drain the pool, remove the old liner, inspect the wall and floor, install the new liner smoothly, and refill carefully.
Archive date: this article was written for PoolSkimmer on Oct 23, 2026 and given the earlier archive date of Feb 10, 2026 so the blog reads as an organized archive. It was not published on that date.
An above-ground pool liner is not something to be put in haphazardly; it requires a methodical approach. The process involves draining the pool, taking out the old liner, making sure the structure is sound and then putting in the new one before refilling.
Pre-start checks
Before any work commences, the equipment must be off and the pool confirmed safe. One should never put a hand into operating suction equipment. Adhere to the instructions for your particular pool and liner.
Take a good look at the wall, top rails, uprights, liner track and floor. You are looking for any of the following: - Old liner that has torn, shrunk or become brittle - Rust, corrosion or sharp edges on the wall - Uneven sand, soft spots or compromised padding on the floor - Fittings that are corroded or gaskets and faceplates in disrepair
Should you come across a bent wall or unstable supports, put a stop to it and engage a qualified pool professional.
Removing the old liner
Drain the pool in accordance with local regulations and the manual. Make sure the area is clear of children and pets and put on appropriate PPE like gloves and eye protection.
Proceed to remove trim and facepieces as the manual dictates. If the old liner is stubborn, loosen or cut it so it can be lifted without marring the wall or floor. A sensible order of operations is to drain the pool fully, remove hardware as directed, and pull the liner out with care. Once it is gone, clean up any stones or residue from the floor and wall and have another look for rust or holes.
Making ready for the new liner
You want a smooth, clean base so the vinyl will lay flat and you do not end up with wrinkles. There should be no sharp points for the new liner to contact. Check for burrs, protruding screws or misaligned sections of the wall. Any dirt or stones on the floor need to be cleared away.
Where there is a bead and liner track, see that it is in order. If the gasket or faceplate is worn, only make repairs within what the manual permits.
Installation
It is best to install the new liner on a day with calm weather. While warmth makes the vinyl more pliable, do not try to use heat to compensate for a bad fit.
1. Align the center of the replacement with the pool. 2. Seat the bead in the track or hang the overlap as your model calls for. 3. Work the vinyl from the middle out to the walls. 4. Let the water in slowly to allow the liner to settle. 5. As the level rises, smooth out any wrinkles per the liner’s instructions. 6. Only make cuts for skimmers, returns or steps once the liner is in position and the manual gives the go ahead. A wrong move here can ruin the liner or cause a leak.
Time to call in an expert?
There is no point in proceeding if the wall is rusted or the cove has collapsed, or if you are in any doubt about the track style or where to place the cutouts. In those instances, or if gaskets and fittings require more than a simple reset, a professional is needed.
The same applies to any electrical issues near the equipment; shut down and get help. Once the job is done, let the manufacturer’s guidelines govern how you refill and restart the circulation system before getting back to regular maintenance.
Sources and further reading
- [Hayward: Weekly pool maintenance](https://www.hayward.com/maintenance/weekly-pool-maintenance)