Roof tank leak detection for apartments in Al Shmysy, Riyadh

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

Why roof tank leak detection differs in Al Shmysy

The centre of Al Shmysy is at 24.6238, 46.7000, about 10.3 km from the centre of Riyadh, with an approximate radius of 1.2 km. The approximate area shown on the map is centred here. The centre of Al Shmysy sits about 587 m above sea level (SRTM open elevation data).

The nearest wadi channel is about 1.4 km from the centre of Al Shmysy (OpenStreetMap). Main roads in or near Al Shmysy: King Fahd Road, Asir, Madinah Road.

Roof water tank leaks in apartment buildings in Al Shmysy usually show up as damp patches on the top-floor ceiling, stains on the walls of a bathroom, or a tank that refills far more often than the household uses water. In most cases the cause is a crack, a failed seal at the outlet or overflow pipe, or a worn internal coating that lets water seep through the concrete or fibreglass. Because the leak is hidden on the roof and the damage appears several floors below, many residents first notice the problem only after the ceiling has already softened. A visit should therefore start by checking the tank itself, its lid, its fittings and its inlet float, before moving down to the flats.

The site's location shapes how this work is approached. The centre of Al Shmysy is at 24.6238, 46.7000, about 10.3 km from the centre of Riyadh, with an approximate radius of 1.2 km, so crews usually plan a single trip for a whole block rather than separate visits. The centre of Al Shmysy sits about 587 m above sea level (SRTM open elevation data), which means the buildings sit on higher ground and water pressure at the roof can differ from lower parts of the city; the technician should check the pressure at the outlet before deciding whether a seal or a valve is the real fault. The nearest wadi channel is about 1.4 km from the centre of Al Shmysy (OpenStreetMap), so rain runoff and dust can build up on roofs after storms, and that debris can block overflow outlets and stress the tank lid. Inspection should include clearing these outlets and looking for sediment that could hide a crack.

Before the visit, ask whether the inspection will cover the tank, the roof slab beneath it and the flats below, and whether the price includes a repair or only a report. If the tank needs a new internal coating, ask for the price per square metre: the rate is SAR 25–65 per m², so request a written measurement of the tank's inner area before agreeing. Confirm which floors will need access, who will prepare the water supply during the work, and how long the tank will be out of use. Keep a note of any stains, the date they appeared and the building's floor number, as this helps the technician trace the leak to its source.

In apartment buildings, the floor below is often where a leak shows first.

When do you need roof tank leak detection?

If you notice one of these signs in Al Shmysy, it is a good moment to talk to the team:

• 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.
• Inlet and outlet connections.
• A worn float valve — we check this before anything else.

Tools and methods, and when we use them

From the first visit to the report

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.

Al Shmysy in facts and sources

Short answers for Al Shmysy

What we advise against

• 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.