A hidden leak is expensive in a way that sneaks up on you. The water bill rises slowly enough that nobody questions it, the damp patch is blamed on the AC, and by the time paint bubbles the plaster behind it has been wet for months. In apartment buildings the bill usually arrives as a neighbour’s ceiling.
Seven early signs
- The meter moves while every tap and appliance is closed.
- A damp patch that returns after repainting.
- Paint bubbling or plaster powdering near the floor line.
- A warm spot on the floor — almost always a hot water line.
- Low pressure at one fixture only.
- The sound of running water at night with nothing switched on.
- A bill that jumps without any change in household usage.
The meter test, step by step
- Close every tap, the washing machine feed and the water heater inlet.
- Photograph the meter reading and note the time.
- Wait one hour, using no water at all.
- Photograph the reading again. Any movement means water is escaping between the meter and your fixtures.
What a leak actually costs you
| Leak size | Roughly per day | Typical visible damage |
|---|---|---|
| Dripping joint | Tens of litres | Damp smell, nothing visible |
| Pinhole in a hot line | Hundreds of litres | Warm floor, bubbling paint |
| Failed joint under a slab | Hundreds to thousands of litres | Neighbour’s ceiling, structural damp |
Detection now versus repair later
How detection actually works
Escaping water under pressure makes a sound at the point of failure, which a ground microphone picks up through tiles and screed. A hot-water leak also warms a path that a thermal camera can see. Combining the two usually locates a leak to within twenty or thirty centimetres, so the repair opens a small square rather than a room.
Frequently asked questions
How much does leak detection cost in Riyadh?
Typically SAR 200–400 for an apartment, depending on area and how many circuits must be isolated. Repair is quoted separately once the point is located.
Can the leak come from the neighbour above?
Yes, and it is common. The meter test tells you whether water is leaving your own system; if your meter is still, the source is elsewhere in the building.
Do you provide a report for the landlord or insurer?
Yes — meter readings, pressure test results, the located point and photos before and after the repair.
Need help with this?
Our team provides plumbing & leak detection across every Riyadh district.
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