Yes -- the pool light niche and conduit are inspected during every professional leak detection visit. Light-related leaks are among the most common findings in South Florida pools.
Many homeowners do not think of their pool light as a potential leak source. But the light housing, the surrounding niche, and the conduit that runs through the pool wall together create multiple potential failure points -- and light-related leaks are one of the most consistent findings in residential pool leak detection in South Florida.
The pool light sits inside a niche -- a recessed housing embedded in the pool wall. An electrical conduit runs from the back of that niche through the pool wall and then underground or under the deck to a junction box outside the pool. The conduit is how the electrical supply reaches the light.
The conduit is also an open pipe. If the seal at the niche end of the conduit fails, or if cracks develop between the niche and the surrounding gunite, water has a direct path from inside the pool, through the niche, and out through the conduit. The water does not go through the electrical system -- it travels around it, through the annular space around the conduit or through a failed seal.
Acoustic listening first. The hydrophone is held near the light niche while the technician listens through amplified headphones. An active leak at the niche produces a signal -- a hiss or subtle rushing sound from water being pulled through the conduit path or a crack.
Dye testing to confirm. If the hydrophone detects a signal or if the light is a suspected area based on the pool's water loss pattern, dye is injected around the perimeter of the niche ring and near the conduit entry point. Dye pulled through any of those locations confirms an active leak at that specific point.
Water level clue. A pool that stops losing water at a level that corresponds with the top of the light niche is showing a strong diagnostic indicator -- the pool is draining through the niche until the water level drops below the leak point. This is one of the clearest pre-visit clues that the light is involved.
Photographic documentation. High-resolution underwater photos of the niche and surrounding plaster are taken and reviewed on a large screen monitor, which often reveals hairline cracks and separation that are difficult to see underwater with the naked eye.
Use the leak analyzer to check if your water loss pattern fits a light niche leak.
Leak and Subsurface Locators checks every fitting and niche during every visit -- including the pool light. Call Sandra to schedule.
Not necessarily. It depends on where the leak is. A failed conduit seal can sometimes be resealed. Cracks in the niche body may be injectable. Separation between the niche and the gunite can sometimes be addressed without replacing the entire light fixture. The leak detection visit identifies exactly where the failure is -- the repair approach depends on that finding, and the repair is handled by a pool contractor after the leak is confirmed and documented.
Yes. The leak is rarely in the light fixture itself -- it is almost always in the niche that holds the light, the seal where the conduit meets the niche, or the bond between the niche and the surrounding pool shell. The light can be in perfect working condition while the niche around it leaks steadily. This is why inspecting the niche perimeter -- not just the light -- is part of every visit.
It is a strong indicator, yes. When a pool loses water and stabilizes at a level that corresponds to the height of the light niche, the most likely explanation is that the pool is draining through the niche until the water level drops below the leak point. A professional visit with dye testing at the niche will confirm or rule it out.
It depends on the specific failure. Conduit seal repairs and niche crack injection tend to be less expensive than full niche replacement. The cost is determined by the repair contractor after the leak detection visit documents exactly what failed and where. Knowing what failed before any repair work begins prevents paying for the wrong fix.