Water tank waterproofing for rest houses & farms in Unaizah

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

What is specific about Unaizah for water tank waterproofing

The centre of Unaizah sits about 667 m above sea level (SRTM open elevation data). Team note on Unaizah: 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..

Water tanks on rest houses and farms in Unaizah are often the first place where waterproofing problems show up. The most common issue is seepage through cracks and joints in the concrete walls and floor, which lets water in and can leave the stored supply exposed to contamination. Owners usually notice damp patches, staining, or a drop in water pressure before they realise the tank itself is the source. For this property type, the job is less about the outer surface and more about sealing the inside of the tank where the water is held.

Local conditions shape how the work is done. The centre of Unaizah sits about 667 m above sea level (SRTM open elevation data), which places the town on the high plateau of Qassim, where temperature swings between day and night can stress concrete and open small cracks over time. Because of this, the approach for a tank usually starts with crack injection, priced at SAR 40–115 per metre, before any coating is applied. Tank internal coating, priced at SAR 25–55 per m², is then applied to the walls and floor. Where the tank sits partly below ground, basement-style sealing at SAR 50–145 per m² may be needed on the buried sections. Roof areas that drain into the tank can be treated separately with liquid roof waterproofing at SAR 10–25 per m².

Before the visit, ask the provider to confirm whether they will inspect the tank while it is empty and clean, and whether they will check for cracks before quoting. Ask which materials they plan to use and whether the coating is suitable for water storage, since not all products are. Request a written breakdown that shows the crack injection length and the coated area in square metres, so you can compare it against the price ranges above. Finally, ask how long the tank must stay empty after the work so the new coating can cure fully before it is refilled.

Rest houses and farms often have long buried lines, tanks and irrigation that need separate tests.

Signs worth paying attention to

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

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

The most common causes

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

Tools we use in Unaizah

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.

Unaizah in facts and sources

Short answers for Unaizah

Mistakes that cost more

• Using a material that is not intended for drinking water

The written outputs

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