Yes, and it is one of the most common leak sources on South Florida pools. The skimmer body separates from the pool shell over time, and the gap drains the pool every time the pump shuts off.
Call (954) 290-5177 for a Free Estimate →Yes. Skimmer leaks are among the most common pool leak sources in South Florida. The skimmer body is a plastic housing set into the concrete pool shell. Over time, as the soil shifts and the concrete expands and contracts with temperature changes, the bond between the plastic skimmer and the concrete separates. That gap allows the pool to drain continuously, especially overnight when the pump is off. Dye testing during an underwater inspection confirms it quickly.
South Florida soil is sandy and shifts with rainfall, drought cycles, and underground water table changes. Pool shells expand and contract slightly with the heat swings between summer and winter. The plastic skimmer body does not expand and contract at the same rate as the surrounding gunite or concrete, and over years, that difference pulls them apart.
Pools over 10 years old are especially prone to skimmer separation. A pool installed in the 1990s or 2000s has gone through hundreds of heat cycles and significant soil movement. The original bond between the skimmer and the pool shell was not designed to last forever under those conditions.
If the pool stabilizes right at the bottom of the skimmer opening when the pump is off, the skimmer throat is almost certainly the source.
Skimmer leaks drain by gravity. When the pump is off and the suction line is no longer pulling water, the gap at the skimmer drains freely.
Looking into the skimmer from above, a visible separation where the plastic meets the concrete is a direct sign of skimmer separation.
Water moving through a gap deposits minerals and algae at the leak point. Dark staining or mineral deposits around the skimmer edge can indicate active water movement.
On pools with two skimmers, if the pool stabilizes at one skimmer level but not the other, that one skimmer is likely the source.
The definitive confirmation, dye applied at the skimmer throat underwater is drawn into the gap by the pressure differential at the leak point.
There are several places a skimmer can lose water. The most common is the throat, the rectangular opening cut through the pool shell where water flows from the pool into the skimmer. The bond around that opening between the plastic skimmer and the concrete shell is the most vulnerable point.
Other skimmer leak locations include the bottom of the skimmer where the suction pipe connects, cracks in the skimmer body itself, the skimmer lid housing on above-deck skimmers, and the equalizer line, a secondary pipe at the bottom of some skimmer baskets that can fail at the fitting.
During an underwater inspection we go to each skimmer and apply a small amount of leak detection dye at the throat, around the perimeter, and at the bottom pipe connection. If the skimmer is leaking, the dye is drawn visibly toward the gap or crack. We also pipe test the skimmer line to rule out the plumbing behind it.
Dye confirmation at the skimmer is one of the cleaner diagnostic results in pool leak detection, the visual evidence is often clear and immediate.
Skimmer separation is something I see on probably a third of the residential jobs we do in Palm Beach and Broward. It is so common that it is one of the first places I look when the pool is dropping to a specific level overnight. The homeowner calls and says the pool is always at the same spot in the morning, and nine times out of ten that spot is the bottom of the skimmer opening.
We confirm it with dye underwater, then repair it in the same visit if we can. Skimmer repairs are often straightforward once we know exactly what we are dealing with.
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Evaporation Calculator → Leak Analyzer → Free Beginner Guide →Leak and Subsurface Locators finds and repairs skimmer leaks throughout South Florida. Licensed CPC1457277. Free estimate before scheduling.
Broward (954) 290-5177 (561) 325-2678 (561) 325-2678Some homeowners attempt to seal skimmer gaps with pool putty or underwater epoxy. These repairs can work temporarily but often fail because the skimmer continues to move with soil and temperature changes. A proper skimmer repair done by a licensed pool contractor is more durable and addresses the actual separation rather than just covering it.
Not necessarily. Many skimmer leaks can be repaired without replacing the entire skimmer. The approach depends on how much separation has occurred, the condition of the skimmer body, and whether the plumbing behind it is also involved. We assess the full situation before recommending replacement.
Skimmer repair costs vary depending on the type of repair needed, sealing a throat separation is different from replacing a cracked skimmer body or repairing the suction line behind it. We confirm the source first and then provide a clear repair estimate based on what is actually needed.
Yes. Water draining through a skimmer gap goes into the soil around and behind the pool shell. Over time that can erode soil, create voids near the pool wall, and contribute to deck settling or cracking. The sooner a skimmer leak is found and fixed, the less secondary damage accumulates.