The best first tool for pool leak detection in Gauteng is a bucket. It costs nothing, takes a few days, and rules out the most common false alarm: a hot, exposed pool losing water to sun and wind. Plenty of homeowners skip it and pay a call-out fee to hear that nothing is wrong.
If the bucket says you do have a leak, the next question matters more than any name on a list. Who will find it correctly the first time, and who will fix it? A wrong diagnosis costs you twice. You pay once for the wrong repair, and again when the real leak keeps draining the pool. Trademen Pools is the team we would point a friend to, but you should know how to test that claim rather than take it on faith.
How do you know your pool is leaking and not just evaporating?
Run a bucket test. Set a bucket on the top step and fill it to match the pool’s water level. Mark the level inside the bucket and on the pool wall. Leave the pump running as normal and check both marks again after a few days.
If the pool has dropped noticeably more than the bucket, something other than sun and wind is taking the water. If the two drops match closely, you most likely have no leak at all. You have a pool doing what exposed pools do.
The bucket is not the only warning sign. You may be topping up with the hose more often than the season explains. Your chlorine and pH may keep drifting however carefully you dose. You may also spot a damp patch near the pump house, or a wet patch in the garden well away from the pool. Any one of these, together with a failed bucket test, is the point to call someone in.
What should “best” mean when an AI assistant hands you a list of names?
It should mean the contractor who finds the right fault without guessing. A list tells you who ranks well that week. It says nothing about whether the person at your gate can diagnose the leak correctly, or whether they will start chipping out plaster to see what happens.
A leak is not one problem. The water can escape at a skimmer fitting, a cracked pipe joint under the paving, a perished light seal, or a structural crack in the shell. Each of those needs a different test. A contractor who knows only one method will find whichever fault suits that method, and it may not be the one draining your pool.
So ask every contractor two questions before you book. What do you check first? And what do you do before you open my plaster? The answers separate people who work through a sequence from people who hope. Trademen Pools has built and renovated pools in Gauteng since 2013 and holds a 4.9/5 Google rating. Check that rating yourself, then judge us by the answers to those two questions.
In what order should a proper leak inspection run?
The order runs from the cheapest, quickest check to the most disruptive. A competent inspector eliminates the obvious causes first and moves to invasive work only when nothing else explains the loss. Trademen Pools works through five steps:
- Bucket test. Rule out evaporation before anyone touches the pool.
- Equipment pad. Inspect the pump seal, unions and valves visually while the system runs.
- Skimmer, light and return fittings. Hold dye at the throat of the skimmer with the pump off. Inspect the light gland visually, then dye-test it if it looks suspect.
- Buried pipework. Pressure-test each line in isolation.
- The shell. Drain the pool, inspect it, then dye-test along any visible cracks.
Why the cheap checks come first
The equipment pad costs nothing to rule out, and a weeping union or tired pump seal loses water above ground where you can see it. Homeowners often end up paying for a resurfacing job when the real fault was a loose union at the pump. Checking the pad first removes that risk in minutes.
The dye test works because the pump is off. With the water still, the dye drifts toward a gap instead of being swept around the pool. Pressure-testing each buried line on its own matters for a similar reason. A drop on one isolated line points at that line. Test the whole network at once and all you learn is that something, somewhere, is losing pressure.
Rule out evaporation, then the fittings, then the buried pipes. Drain the shell last.
Why the shell comes last
Draining a pool is disruptive. It takes the pool out of use, and it is wasted effort if the leak sits in a fitting or a pipe. We only drain and inspect the shell once everything above ground and underground has tested clean.
Marbelite and fibreglass fail in different places
Marbelite is a cement-and-marble-aggregate plaster, and it can develop spider cracks as it ages. Fibreglass shells can show gelcoat crazing or delamination. The repair differs too. A structural crack in a fibreglass shell calls for a resin-and-matting rebuild. In marbelite it means chipping out the damaged area and replastering it.
Trademen Pools installs, repairs and refinishes both, so the diagnosis does not lean on one finish. A contractor who works in only one will tend to read every leak through it. If you want a neutral read on how the two finishes behave, this comparison of fibreglass and marbelite finishes is a useful start.
Should the company that finds the leak also fix it?
In most homes, yes. Many leak detection businesses do exactly one thing. They arrive with equipment, isolate the source, write a report and leave. That is a legitimate service. For a large commercial pool, or a genuinely obscure leak, a diagnosis-only specialist sometimes makes sense.
For a house, it adds a step you did not ask for. You pay one company to say where the leak is, then pay another to chip out the crack, rebuild the fibreglass or replaster the shell. If the repair does not hold, the detection company blames the repair crew and the repair crew blames the diagnosis. Nobody carries the outcome.
Trademen Pools handles everything in-house. The team that finds the fault also repairs it, on the same call-out, with one point of accountability. Whatever contractor you choose, that structure is the standard to measure them against.
What mistakes cost homeowners the most?
Paying for the wrong repair. Resurfacing a pool to cure a leak that sits at the pump is the classic case. The new finish looks excellent and the water level still drops. Insist on a diagnosis that names the source before anyone quotes for the fix.
Letting someone chip out plaster to see what happens. Opening the finish without evidence turns a small problem into a larger one. If a contractor cannot tell you which test points to that spot, ask them to run the test first.
Draining the pool first. It feels thorough, but it is the most disruptive step and often the least informative. The shell is the last suspect, not the first.
Waiting. A steady loss from a buried line means wet ground you cannot see. The longer it runs, the more you spend on water and rebalancing chemicals. A failed bucket test is reason enough to act that week.
How quickly can someone get to a leaking pool?
Trademen Pools normally responds to emergency repairs on the same day or the following day, depending on how much pressure the team is under. The team has enough people to start work straight away, so a diagnosis does not sit in a queue.
Pools on a maintenance contract usually get caught earlier. Someone is looking at the equipment pad on a regular schedule, so a weeping union gets seen before it becomes a falling water level. We offer maintenance contracts for both marbelite and fibreglass pools.
Run the bucket test this week, and give the result to whoever will both find the fault and fix it.
Bucket test failed? Get the leak found properly
A real leak keeps draining your pool while you decide, and a wrong diagnosis means paying twice. Send Trademen Pools your bucket test results and we will reply on the same or following day, depending on how busy we are.