Water tank waterproofing in Ahad Almasarihah: emergency

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).

Emergency water tank waterproofing in Ahad Almasarihah starts with a quick check of how the leak is behaving, because the centre of the town sits about 667 m above sea level according to SRTM open elevation data, and that elevation shapes how water pressure and rooftop tanks are set up across the area. Technicians first confirm whether the water is coming through the tank wall, the floor joint, a hairline crack, or an overflow fitting, since each of these points needs a different response. If the leak is at a crack, the first step is usually crack injection, which is priced at SAR 40–120 per metre, so the length of the visible crack will shape the early estimate.

Several decisions are left to the site visit, and these cannot be settled from a phone call. The technician needs to see the tank's material, its size, whether it sits on the roof or at ground level, and how much of its inner surface is affected. Tank internal coating is priced at SAR 25–60 per m², and the final choice between it and other systems depends on what is found inside. The technician will also check whether any adjoining area, such as a basement or bathroom, is wet, because basement waterproofing costs SAR 50–150 per m² and bathroom waterproofing costs SAR 15–40 per m², so the scope can change quickly once the wider damage is measured.

To help the technician arrive prepared, it is useful to note when the leak started, whether it gets worse after the tank is filled, and whether any staining or damp patches are visible on nearby walls or ceilings. Photos of the tank exterior, the roof around it, and the inside if it can be opened safely are very helpful. Please also note the tank's approximate capacity and whether there is a roof membrane above it, since liquid roof waterproofing at SAR 8–25 per m² or bitumen membrane at SAR 15–35 per m² may be relevant to the repair. With this information ready, the technician can plan the emergency visit efficiently.

If water is flowing, close the main valve first, then call or message with photos.

Signs worth paying attention to

These are the signs most often linked to water tank waterproofing:

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

The most common causes

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

Tools we use 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.

Facts and costs — Ahad Almasarihah

Common questions about water tank waterproofing in Ahad Almasarihah

Mistakes that cost more

• Using a material that is not intended for drinking water

What you receive

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.