Roof tank leak detection in Al Shmysy, Riyadh: emergency

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

Roof tank leak detection in Al Shmysy: the local context

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. Main roads in or near Al Shmysy: King Fahd Road, Asir, Madinah Road.

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).

Picture a family living in a villa in Al Shmysy who wakes to a damp patch on the bedroom ceiling and a faint trickle of water running down the wall. Their rooftop water tank is the likely source, and the question on their mind is whether this is an emergency that needs a crew straight away or something that can wait until morning. For many owners in this situation, the worry is compounded by not knowing where the water is coming from, since roof tanks sit out of sight and a leak can travel along pipes or through the ceiling before it shows.

The local facts matter here. The centre of Al Shmysy sits at 24.6238, 46.7000, about 10.3 km from the centre of Riyadh, with an approximate radius of 1.2 km, so the area is a compact residential zone on the city's outskirts rather than a dense core. It sits about 587 m above sea level, and the nearest wadi channel is about 1.4 km from the centre. For an owner, the practical meaning is that rooftop tanks here are exposed to strong sun and dust, which can degrade tank linings and joints over time, and that a tank with a long history of exposure is more likely to show weakness at seams and fittings. Knowing these conditions helps a technician focus the inspection on the parts most likely to fail.

Start by isolating the water supply to the tank and turning off the pump so the leak does not get worse. Next, place a bucket or tarpaulin under the dripping point and move valuable items away from the wet area. Then check the tank itself, looking for wet patches on the outside, around the base, and at the inlet, outlet, and overflow fittings. Note the approximate size of the affected area so you can describe it clearly when you call. If the leak is from the tank body, the repair may involve internal coating, which is priced in the range of SAR 25–65 per m², so the final cost depends on the surface area that needs treatment. Keep photos and a short written note of what you observed for the technician who attends.

If water is flowing, close the main valve first, then call or message with photos.

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:

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

Where the problem usually comes from

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

How we choose the tool in Al Shmysy

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.

Facts and costs — Al Shmysy

Questions from Al Shmysy

Mistakes that cost more

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

What you receive

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