Problem
Hot Floor Patch
Ref R1 500 – R5 000 slab detection
A warm patch under tiles is one of the clearest leak signatures there is: hot water is escaping a pressurised line and heating the screed. Thermal imaging confirms the extent, pressure isolation confirms the line, and the point is marked before a tile is lifted.
Likely causes
What is usually behind this
- Hot-water pipe failure under the slab
- Geyser or hot-line joint weeping beneath the floor
- Underfloor heating fault (where installed)
- Electrical conduit heat (rare, must be excluded)
Safe checks you can do now
Before the technician arrives
- 01Note whether the patch is warmest when the geyser has been heating
- 02Check whether the geyser overflow is discharging
- 03Isolate the geyser and see whether the patch cools
- 04Avoid breaking the floor until the point is confirmed
Do not open walls, lift tiles or excavate before the leak is located — it multiplies the repair cost without improving accuracy.
Tests that settle it
Services used for this problem
Expected detection fee
R1 500 – R5 000 slab detection
Confirmed before the survey. Free written report, no-find, no-fee.
Other problems
High Water Bill
The account jumps but nothing looks wet. Here is how we prove why.
Water Meter Running
Meter turning with everything closed? This is the first test we run.
Damp Walls
Rising damp, a leak, or condensation? The diagnosis changes the repair.
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Hot Floor Patch — let's prove the cause
Tell us what you are seeing. We confirm the test needed, agree the fee and find the leak — with a written report and your no-find-no-fee guarantee.