Water tank waterproofing in Hail: with a verifiable technical report

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

Why water tank waterproofing differs in Hail

Team note on Hail: 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.. The centre of Hail sits about 1002 m above sea level (SRTM open elevation data).

Water tanks in Hail, a city that sits about 1002 m above sea level, face a particular set of problems. The most common issue is seepage through cracks at the joints between the tank walls and base, and through hairline cracks that open as concrete expands and contracts through hot days and cool nights. Once water finds a route, it can corrode the internal lining and carry mineral deposits into the supply, which is why many owners notice a change in taste or colour before they see any visible leak. For this property type, the first step is always to locate and seal the weak points, and for many tanks that means crack injection priced at SAR 40–115 per m, followed by a tank internal coating at SAR 25–55 per m² to protect the surfaces that hold water.

The altitude of Hail shapes how the work should be planned. Because the centre of the city sits about 1002 m above sea level, rooftop and elevated tanks receive strong sun and wide temperature swings, which accelerate movement in the concrete and the breakdown of exposed coatings. A good approach therefore pairs internal protection for the water side with an exterior measure for the sun-exposed top and sides. Liquid roof waterproofing at SAR 10–25 per m² suits flat tops, while XPS boards at SAR 10–30 per m² can reduce heat gain on tank walls that are not shaded. Matching the materials to the exposure, rather than applying one product everywhere, is what keeps the work useful over the long term.

Before arranging a visit, ask the provider to explain how they will confirm the source of the leak, whether they will drain and clean the tank before coating, and which surfaces they plan to treat and why. Ask them to write out the measured area and linear metres of cracks so you can compare the quote against the rates given above, and to state which products they intend to use and whether those suit exposed rooftop conditions at this altitude. Clear answers to these questions show whether the job has been planned for your tank rather than sold as a standard package.

Each job ends with a written report that carries a verification code you can check on our site.

Signs worth paying attention to

If you notice one of these signs in Hail, it is a good moment to talk to the team:

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

The most common causes

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

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 — Hail

Short answers for Hail

Common mistakes we see

• 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.