Water tank waterproofing for residential buildings in Ahad Rafida

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

Why water tank waterproofing differs in Ahad Rafida

Team note on Ahad Rafida: Kashf teams serve this city and its nearby districts with the same documented inspection standard: device-based leak detection without demolition, a written report, and a clear scope before any work begins.. Main roads in or near Ahad Rafida: King Khalid Road.

The centre of Ahad Rafida sits about 2055 m above sea level (SRTM open elevation data).

Is it worth waterproofing a water tank in Ahad Rafida, and what will it cost? The centre of Ahad Rafida sits about 2055 m above sea level, a setting where tanks on residential roofs are exposed to strong sun, sharp temperature swings and wind, all of which can open small cracks over time. Tank internal coating is typically priced at SAR 25–60 per m², while liquid roof waterproofing, which protects the surface the tank sits on, runs SAR 8–25 per m². Because the two jobs are separate, many owners ask for both at once so the tank and its base are sealed together and the roof does not leak into the flat below.

The visit usually starts with a look at the tank's interior and exterior surfaces, the joints, the outlet and the roof area beneath it. The inspector notes any cracks, flaking or staining, and measures the surfaces to be treated so that the quote is based on real square metres. Where a crack is found, the price for crack injection is set per metre, usually SAR 40–120 per metre, and the inspector checks whether it runs through the wall or only across the surface. The inspector then recommends a system, such as an epoxy or cementitious internal coat for the tank, a bitumen membrane or spray foam for the roof, and explains why each suits the surface in question, without pressure to choose the most expensive option.

Before the visit, clear access to the tank lid, the roof hatch and the area beneath the tank, and empty the tank if you can, since the inspector needs to see the bare surface. Have your building's roof plan or any previous repair records ready, and note when leaks were first seen and where they appeared. Tell the inspector if the tank is still in use, because this affects how the work is scheduled. With these details at hand, the visit is quicker and the quote reflects the actual condition of your tank and roof.

For a residential building, shared risers, tanks and pumps are checked as one system.

Signs worth paying attention to

The following signs are worth checking before they grow:

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

Where the problem usually comes from

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

Tools and methods, and when we use them

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.

Facts and costs — Ahad Rafida

Questions from Ahad Rafida

Common mistakes we see

• Using a material that is not intended for drinking water

What you get after the work

You receive: the material name, its batch number and the fill-test result, in a technical report with a verification code.