Water tank waterproofing for apartments in Al Wrwd, Riyadh

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

Water tank waterproofing in Al Wrwd: the local context

The centre of Al Wrwd is at 24.7244, 46.6785, about 1.2 km from the centre of Riyadh, with an approximate radius of 2 km. The service-area circle on the map below is drawn from this point. Main roads in or near Al Wrwd: King Fahd Road, Olaya Street, Al Urubah Road.

The centre of Al Wrwd sits about 631 m above sea level (SRTM open elevation data).

An apartment owner in Al Wrwd, Riyadh, usually notices a problem only when a damp patch appears on a ceiling or a tank seems to leak. Many buildings in this part of the city have rooftop or ground-level water tanks that have been in service for years, and the owner often has little information about their condition. The tank may be fine for a long time, but once water starts seeping through concrete cracks or an ageing coating, the damage can spread to walls, the slab and the apartments below. Waterproofing work is the usual remedy, and owners in this position want a clear sense of what it involves before deciding.

The local facts shape that decision. Al Wrwd sits at a centre point of 24.7244, 46.6785, about 1.2 km from the centre of Riyadh, with an approximate radius of 2 km, so most properties here are within a short distance of the city's core services and contractors. The centre of Al Wrwd sits about 631 m above sea level (SRTM open elevation data), which is a reminder that the area is elevated and exposed to the dry, sometimes harsh conditions typical of the Riyadh plateau. For a tank, the practical point is that the internal coating and the external sealing have to cope with repeated filling, heat and dust. Pricing also varies by method: tank internal coating is typically SAR 25–65 per m², epoxy coating SAR 35–95 per m², spray foam SAR 20–45 per m², and crack injection SAR 40–125 per metre, so the chosen approach should match the actual defect.

A sensible order of work starts with an inspection. Look at the tank walls and base for cracks, flaking coating and rust on any metal parts, and trace where water appears in the apartment below. Next, measure the surfaces to be treated, because most quotes are priced per square metre or per metre of crack. Then choose the method that fits the damage: crack injection for isolated leaks, a tank internal coating for general wear, and bitumen membrane or liquid roof waterproofing for the surfaces above. Finally, ask for the cleaning, surface preparation and curing steps to be included in writing, and check that the work is inspected before the tank is refilled.

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

When do you need water tank waterproofing?

These are the signs most often linked to water tank waterproofing:

• Unusual colour or taste in the water
• Deposits and flaking inside the tank
• A tank that leaks after testing

Causes we see in the field

• A common cause: construction joints.
• Cracks in the walls or floor.
• Damaged old coating — we check this before anything else.

Tools and methods, and when we use them

From the first visit to the report

1. Emptying and ventilation: The tank is emptied and ventilated before entry.
2. Cleaning and preparation: Loose material is removed down to a sound surface.
3. Crack treatment: Active cracks are treated first.
4. Coating layers: A material intended for drinking-water tanks is applied.
5. Disinfection and fill test: The tank is disinfected and the level is monitored after filling.

Al Wrwd in facts and sources

Questions from Al Wrwd

Mistakes that cost more

• Using a material that is not intended for drinking water

What you receive

The written output: the material name, its batch number and the fill-test result. The report is numbered and can be checked with its verification code.