Above-Ground Pools /
Installing a Pool Skimmer: Above-Ground vs. Concrete Pool Differences
Pool skimmer installation depends on construction: above-ground pools may use hanging or through-wall units, while concrete pools usually need structural and plumbing work.
Archive date: this article was written for PoolSkimmer on Oct 7, 2026 and given the earlier archive date of Nov 27, 2025 so the blog reads as an organized archive. It was not published on that date.
Start with the answer
The approach to installing a pool skimmer is dictated by the pool in question. With most above-ground models, one might be dealing with a removable hanging type or a through-wall unit from the maker. A concrete pool is an entirely different matter; the skimmer is typically woven into the wall and plumbing, making for a more involved and permanent project.
There is no one-size-fits-all procedure. What you can put in place will be determined by the construction of the pool, its liner warranty and overall compatibility.
Skimmers for above-ground pools
You will generally find one of two types on an above-ground pool:
- Hanging: This is the more straightforward option that hooks over the wall and can be swapped out with ease.
- Through-wall: Requires mounting through the wall itself, which means precise alignment, gasket sealing and possibly a cutout.
Make sure the skimmer and the pool model are meant to be used together before starting. Certain framed or inflatable pools will only take a particular adapter, while some should not be tampered with at all.
It is best to proceed in this order:
1. Shut off the pump prior to handling the basket or any components in the vicinity. 2. Go over the instructions for both the skimmer and the pool. 3. Examine the wall and liner, looking for any rust, warping or brittle plastic. 4. Put on your gloves and eye protection.
Should the job call for you to cut the wall or the liner, pause to make certain the pool is built for it. An ill-advised cut is a recipe for hard-to-fix leaks and could nullify the liner warranty.
Dealing with concrete
On a concrete pool, the skimmer is part of the circulation system and the work is closer to construction than an accessory change. The opening has to be well sealed and in line with the surrounding finishes and plumbing. Homeowners would do well to be careful here; rebar, tile and the concrete itself can present challenges. Any misalignment with the throat or body of the skimmer is going to be an expensive fix.
Mistakes to steer clear of
Too many issues arise from thinking any skimmer will do. Do not assume a hanging model is a substitute for a through-wall one, nor should you start drilling or sealing without first ascertaining compatibility. Worn gaskets and fasteners have no place in a new installation, and the pump should never be running when you are working on the parts.
Keep away from operating suction equipment. And if there is any doubt about water quality or an electrical issue with the gear, do not get in the water.
Time for a professional?
If the task involves cutting, drilling, changing the plumbing or repairing concrete and tile, put in a call to a qualified pro. The same applies if you are not sure whether you are looking at a removable or a through-wall setup, as that has implications for safety and your warranty. A professional is also the way to go for a leak at the skimmer opening.
In the end
With an above-ground pool, it comes down to fitting the skimmer to what the manufacturer intended for the wall and liner. For concrete, expect a structural and plumbing commitment. In either instance, adhere to the manuals and use proper PPE. If the work gets beyond routine maintenance, leave it be. Done right, the installation will ensure good circulation and safe, clean water.