Water tank waterproofing for offices & commercial complexes in Al Aard, Riyadh

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

Why water tank waterproofing differs in Al Aard

The centre of Al Aard is at 24.8935, 46.6060, about 21.2 km from the centre of Riyadh, with an approximate radius of 8 km. The approximate area shown on the map is centred here. Main roads in or near Al Aard: King Fahd Road, King Abdulaziz Road, Abu Bakr Al Siddiq Road.

The centre of Al Aard sits about 671 m above sea level (SRTM open elevation data). The nearest wadi channel is about 1 km from the centre of Al Aard (OpenStreetMap).

Al Aard sits about 21.2 km from the centre of Riyadh, with its own centre located at 24.8935, 46.6060 and a rough radius of 8 km. The area stands at around 671 m above sea level, and the nearest wadi channel runs about 1 km from the centre. For water tank waterproofing work on offices and commercial complexes, these facts shape how we plan each job. Distance from the city centre means crews and materials must be scheduled with travel time in mind, so site visits are arranged to cover several tanks in one trip where possible. The elevation affects how rooftop tanks are exposed to sun and wind, which influences the choice of coating that must stay flexible through heat cycles. The nearby wadi channel matters because heavy runoff can carry silt and debris toward tank inlets and overflow points, so we check drainage paths and seal entry points with that in mind.

Pricing for tank work is set per square metre of surface treated, and the common ranges are tank internal coating at SAR 25–65 per m² and epoxy coating at SAR 35–95 per m². Where a tank sits below a building or shares a wall with a basement, basement waterproofing at SAR 55–160 per m² may also come into the scope. Cracks in the tank wall are sealed by crack injection at SAR 40–125 per metre, and roof sections that drain into the tank can be treated with liquid roof waterproofing at SAR 10–25 per m² or a bitumen membrane at SAR 15–35 per m². Spray foam at SAR 20–45 per m² and XPS boards at SAR 15–30 per m² are options for insulation-led jobs. Each quote is built from the measured areas on site, so the final figure depends on what your tank actually needs.

Owners in this area often avoid the same few errors. The most common is coating a tank without first cutting out and filling existing cracks, which lets water find the same weak line again within a short time. Another is ignoring the roof and overflow connections, where a sound tank wall can still leak through poorly sealed pipe penetrations. Some owners also skip cleaning the tank floor of sediment before applying a coating, so the new layer bonds to loose material and peels. Others choose a cheap coating without checking how it handles the heat and wind typical of this elevation. Finally, many wait until a leak is visible inside an office before acting, when a planned inspection would have caught the problem earlier and kept disruption to tenants low.

For offices and commercial complexes, work is scheduled to avoid disrupting staff and visitors.

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
• 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.
• A common cause: cracks in the walls or floor.

Tools we use in Al Aard

The steps in order

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 Aard

Questions from Al Aard

Mistakes that cost more

• Using a material that is not intended for drinking water

The written outputs

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.