Water tank waterproofing in Unaizah: before summer & rain season

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

Water tank waterproofing in Unaizah: the local context

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

Is it worth waterproofing a water tank in Unaizah before summer and the rain season? For most property owners here, the answer depends on the tank's condition and how much it costs to fix now compared with later. Unaizah's centre sits about 667 m above sea level (SRTM open elevation data), and that elevation shapes the local climate, with hot dry summers followed by sudden rain that can expose weak seams and cracks. Tank internal coating is priced at SAR 25–55 per m², while crack injection is SAR 40–115 per metre, so a small problem found early is usually far cheaper to seal than a leak that has already soaked the surrounding structure.

The inspection starts with a walk around the outside of the tank and the roof area, checking for hairline cracks, stains, flaking paint and signs of moisture at joints and fittings. The technician then examines the inside, looking at the internal surface for peeling coating, damp patches, and any cracks that show water tracking through. Where a leak is suspected, the team can mark the affected lengths so the repair scope is clear before any work begins. The inspection also helps decide which system suits the tank: epoxy coating is priced at SAR 35–85 per m², spray foam at SAR 20–45 per m², and liquid roof waterproofing at SAR 10–25 per m², so the right choice follows from what the inspection finds rather than a standard package.

Before the visit, clear access to the tank and its roof, and note when you first noticed any dampness, staining, or drops in water pressure. Keep records of any previous repairs, since they tell the inspector which areas have already been treated. If the tank sits in a utility room or shared space, make sure the area is clear so the team can work safely and without delay. Booking the inspection before summer heat and the rain season gives time for repairs to cure properly, which means your water storage is protected when conditions are at their most demanding.

Checks before summer and before the rain season catch problems while they are still small.

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.
• Damaged old coating — 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.

Unaizah in facts and sources

Questions from Unaizah

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.