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

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

Before we start: what we know about Al Alya

The centre of Al Alya is at 24.6931, 46.6845, about 2.5 km from the centre of Riyadh, with an approximate radius of 3 km. The service-area circle on the map below is drawn from this point. Main roads in or near Al Alya: King Fahd Road, Makkah Road, Al Olaya Street.

Al Alya is largely commercial, with shops and offices. The centre of Al Alya sits about 622 m above sea level (SRTM open elevation data).

Is there a way to tell whether the water tank on your roof is leaking before the damage shows up in your ceilings? In Al Alya, the answer starts with knowing your building's setting. The centre of Al Alya sits at 24.6931, 46.6845, about 2.5 km from the centre of Riyadh, with an approximate radius of 3 km. Al Alya is largely commercial, with shops and offices, so many residential buildings here share streets with busy ground-floor trade, and a roof tank that loses water can go unnoticed for longer than you would expect. The area also sits about 622 m above sea level, which is worth keeping in mind when your building's pressure and tank levels are discussed with a technician.

A roof tank leak inspection usually begins with a visual check of the tank body, its lid, the inlet and outlet pipes, and the float valve, looking for wet patches, staining, or corroded fittings. The technician then checks the internal condition of the tank, since the internal coating is often where leaks start. Coating work is priced per square metre, typically SAR 25–70 per m², so the size of your tank and the condition of its lining will shape the final scope. Where the tank is accessible, the inspector looks at the walls and base for cracks, flaking, or sediment, and confirms that the overflow and drain lines are working. If the source of a leak is not clear from the outside, the findings are explained in plain terms so you know which repair is needed and which can wait.

Before the visit, gather the information that helps the technician work quickly. Note when you first noticed water stains, low water pressure, or unusual water levels, and mention whether the problem comes and goes. Clear a safe route to the roof and make sure the access ladder or stairwell is unobstructed. If your building has more than one tank, or if the tank was recently cleaned or repaired, write that down too. Keep a record of any previous repair work, since it shows the coating history and helps the inspector decide whether an existing repair has failed. Having these details ready means the inspection can focus on finding the leak and agreeing on the right fix.

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:

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

The most common causes

• A worn float valve.
• A common cause: a fibreglass or polyethylene tank cracking in the sun.
• Inlet and outlet connections.

How we choose the tool in Al Alya

How the work is done, step by step

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.

Quick comparison: facts and costs in Al Alya

Common questions about roof tank leak detection in Al Alya

Common mistakes we see

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

The written outputs

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