Water tank waterproofing in Al Flah, Riyadh: without breaking

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

Why water tank waterproofing differs in Al Flah

The centre of Al Flah is at 24.7963, 46.7088, about 9.8 km from the centre of Riyadh, with an approximate radius of 1.9 km. The service-area circle on the map below is drawn from this point. The centre of Al Flah sits about 645 m above sea level (SRTM open elevation data).

Main roads in or near Al Flah: Northern Ring Road, Airport Road, Northern Ring Road.

Water tank waterproofing in Al Flah starts with the location itself. The centre of Al Flah is at 24.7963, 46.7088, about 9.8 km from the centre of Riyadh, with an approximate radius of 1.9 km. The centre of Al Flah sits about 645 m above sea level (SRTM open elevation data). Because the neighbourhood sits at this elevation and is a short drive from the city centre, a technician will first look at the tank's position, access and exposure rather than assume a standard layout. The first checks are simple: whether the tank is on the roof, at ground level or partly below it, and whether the surface is cracked, flaking or stained.

Several things are left to the site visit, because they cannot be judged from a distance. The technician will check the condition of the tank walls, the base and the inlet and outlet fittings, and will look for the source of any leak before choosing a method. Crack injection is priced per metre, from SAR 40–125 per m, so the length of visible cracking matters. Tank internal coating is priced per m², from SAR 25–65 per m², so the true inside area will be measured on the day. Epoxy coating for the interior is quoted at SAR 35–95 per m², and the exact figure depends on surface preparation and the condition found during inspection. Nothing is fixed until the tank has been seen.

The following details help the technician arrive prepared. Note the tank's approximate dimensions, its material, how long it has been in service, and whether the water supply must be kept running during the work. Mention any previous repairs and the type of coating used before. If the tank sits on a roof, say whether the roof surface has also been affected, since liquid roof waterproofing is priced at SAR 10–25 per m² and bitumen membrane at SAR 15–35 per m². Clear access to the tank and a safe place to store materials will speed up the visit and help the work proceed without disruption.

The aim is to locate the cause with instruments first, so any opening is limited to one point.

Signs that call for water tank waterproofing

The following signs are worth checking before they grow:

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

Where the problem usually comes from

• A common cause: construction joints.
• A common cause: damaged old coating.
• Cracks in the walls or floor.

How we choose the tool in Al Flah

How the work is done, step by step

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 Flah in facts and sources

Short answers for Al Flah

What we advise against

• 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.