Water tank waterproofing in Al Nkhyl, Riyadh: before buying or handover

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

Before we start: what we know about Al Nkhyl

The centre of Al Nkhyl is at 24.7422, 46.6375, about 5 km from the centre of Riyadh, with an approximate radius of 3.9 km. The service-area circle on the map below is drawn from this point. Main roads in or near Al Nkhyl: King Fahd Road, Imam Saud bin Abdulaziz bin Mohammed Road, Al Takhassusi Road.

The nearest wadi channel is about 1.4 km from the centre of Al Nkhyl (OpenStreetMap). Al Nkhyl has both villas and apartment buildings.

The centre of Al Nkhyl sits about 622 m above sea level (SRTM open elevation data).

Water tank waterproofing in Al Nkhyl is most often needed because of leaks at the joints, cracks in the walls and floor, and corrosion or flaking of old coatings inside the tank. In a city where many homes rely on rooftop or ground-level storage, a leaking tank wastes water and can damage the structure below. Al Nkhyl has both villas and apartment buildings, so the work differs: a villa owner may have a dedicated rooftop or ground tank that can be drained and treated in full, while an apartment building often shares a tank and needs its work scheduled around residents' supply.

The local setting also shapes the approach. The centre of Al Nkhyl sits about 622 m above sea level, and the nearest wadi channel is about 1.4 km from the centre, so rainfall runoff and seasonal water movement are worth considering when choosing a coating and checking drainage around the tank base. The area is about 5 km from the centre of Riyadh, which means contractors may need to plan travel and material delivery into their schedule. For inside-tank work, the rate range of SAR 25–65 per m² for tank internal coating gives a useful starting point, but the final figure depends on the surface area, the condition of the existing lining, and whether cracks need injection at SAR 40–125 per metre.

Before the visit, ask the provider to confirm the tank type, its capacity and access, and whether the tank must be emptied and cleaned first. Ask which product they propose and whether it suits drinking water, and request a written quote that separates surface preparation, crack injection and final coating. Find out how long the tank will be out of use and who arranges refilling. Ask to see examples of similar work on villas or apartment buildings in the district, and agree on how any leaks after completion will be inspected and fixed.

Before buying or taking over a property, an inspection gives you findings in writing before you sign.

Signs that call for water tank waterproofing

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

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

Causes we see in the field

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

How we choose the tool in Al Nkhyl

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.

Quick comparison: facts and costs in Al Nkhyl

Short answers for Al Nkhyl

Mistakes that cost more

• Using a material that is not intended for drinking water

What you get after the work

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.