Roof tank leak detection for residential buildings in Al Mlz, Riyadh

Prepared by the technical team · editorial review · last updated 13 November 2026 · Sources

What is specific about Al Mlz for roof tank leak detection

The centre of Al Mlz is at 24.6561, 46.7275, about 8.3 km from the centre of Riyadh, with an approximate radius of 2.8 km. The approximate area shown on the map is centred here. Al Mlz is mainly apartment buildings.

The centre of Al Mlz sits about 592 m above sea level (SRTM open elevation data). Main roads in or near Al Mlz: University Street, Salah al-Din al-Ayyubi Road, Omar bin al-Khattab Road.

Picture a family living on the upper floor of an apartment building, where the rooftop water tank sits above their flat. One morning they notice a faint damp patch on the ceiling, or the water pressure drops for no clear reason. The owner may not know whether the leak is in the tank, the pipework, or the connections, and the building's shared roof makes the question harder to answer alone. Problems like this tend to grow quietly, so the earlier they are traced, the less damage they usually cause.

Al Mlz is a district where apartment buildings make up most of the housing, so a single rooftop tank often serves many households at once. The centre of the area sits about 592 m above sea level and lies roughly 8.3 km from the centre of Riyadh, with an approximate radius of 2.8 km. For a building owner or a management committee, this means a leak affects several flats at the same time, and that a coordinated inspection is worth more than separate fixes. Because the district is mainly residential and dense, access to the roof and the tank should be arranged with all occupants in advance.

A sensible approach starts with the basics. First, record where the damp or pressure loss appears and on which floors, so the source can be narrowed down. Second, arrange a visual check of the tank exterior, its lid, overflow pipe and connections, and note any staining or wet patches. Third, if the tank is suspected, have its internal condition assessed before deciding on repair. Where the inner surface needs work, the internal coating is typically priced at SAR 25–70 per m², so ask for the measured area in writing. Finally, agree the scope and the cost split among owners, and keep a copy of the inspection report for future reference.

For a residential building, shared risers, tanks and pumps are checked as one system.

Signs that call for roof tank leak detection

These are the signs most often linked to roof tank leak detection:

• Water on the roof around the tank base
• A stain on the top-floor ceiling
• Repeated spills from the overflow outlet

The most common causes

• A fibreglass or polyethylene tank cracking in the sun — we check this before anything else.
• A common cause: inlet and outlet connections.
• A worn float valve — we check this before anything else.

How we choose the tool in Al Mlz

The steps in order

1. Inspecting the base and connections: We look at where water gathers and trace it back.
2. Level test: The level is recorded with filling stopped.
3. Float and overflow check: We confirm whether water is escaping through the overflow rather than the tank body.
4. Recommendation: Repair of the connection, the float or the tank, stated in writing.

Facts and costs — Al Mlz

Questions from Al Mlz

Common mistakes we see

• Mistaking a float overflow for a leak in the tank body

What you get after the work

You receive: the source of the water identified: tank body, connections or float valve, in a technical report with a verification code.