Water tank waterproofing in Ahad Almasarihah: before summer & rain season

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

Why water tank waterproofing differs in Ahad Almasarihah

Team note on Ahad Almasarihah: 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 Ahad Almasarihah sits about 667 m above sea level (SRTM open elevation data).

The centre of Ahad Almasarihah sits about 667 m above sea level, according to SRTM open elevation data, and that height shapes how a tank should be checked before the hot months arrive. Start with the tank's internal surface and the seams where walls meet the floor, because these are where water and sediment collect and where older coatings tend to lift first. Look for any flaking, blistering or chalky patches, and note whether the existing coating has pulled away from the concrete or steel. Tank internal coating is priced at SAR 25–60 per m², so a clear picture of the affected area helps set expectations before any work is discussed.

The points that depend on the particular site are left to the visit itself. The technician will confirm the tank material, the access route, whether the tank can be fully drained and cleaned, and where any cracks run. Cracks are checked on the spot because crack injection is priced at SAR 40–120 per metre, and the length cannot be judged from a photo. The same applies to the roof: if the tank sits under an exposed roof, the technician will assess whether liquid roof waterproofing (SAR 8–25 per m²) or a bitumen membrane (SAR 15–35 per m²) suits the surface, and whether insulating boards such as XPS (SAR 12–30 per m²) are worth adding. Nothing in this list should be treated as a final quote until the visit has been completed.

To help the technician, have the following ready: the approximate capacity and age of the tank, any record of previous repairs or coatings, and a note of when water last tasted or looked unusual. Confirm that the tank can be emptied for the day of work and that the water supply can be shut off during the job. If there are visible leaks around pipes or the overflow, point them out, since these often need attention alongside the main surface. Clear access to the tank lid and the roof hatch saves time, and keeping pets and children away from the work zone is sensible. Giving this information before the visit means the first hour on site can go to inspection rather than to questions.

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

Causes we see in the field

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

How we choose the tool in Ahad Almasarihah

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.

Ahad Almasarihah in facts and sources

Short answers for Ahad Almasarihah

Common mistakes we see

• 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.