Water tank waterproofing in Ahad Almasarihah: without breaking

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

Water tank waterproofing in Ahad Almasarihah: the local context

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).

Picture a homeowner in Ahad Almasarihah who notices damp patches on a ceiling below the rooftop water tank and a faint stain running down a concrete wall. The tank is their only supply, so they do not want to drain it, dismantle pipework or empty the house for weeks. They want a fix that stops the leak and keeps the water flowing. Many owners in this situation are expats renting a villa or residents who have lived in the same home for years, and both usually ask the same question: can the tank be sealed where it stands?

The centre of Ahad Almasarihah sits about 667 m above sea level, according to SRTM open elevation data. That height means the area can feel cooler at night and sees real temperature swings between day and night, and those swings make concrete expand and contract. Over time this movement opens hairline cracks in tank walls and joints. Because the property sits on higher ground, it also helps to check how rainwater runs off the roof and whether it pools around the tank base. A repair that ignores these everyday pressures will often fail within a season, so the diagnosis should look at the whole roof and tank area rather than one visible stain.

Start by isolating the water and checking the tank walls, lid and inlet and outlet fittings for wet marks, efflorescence or cracks. Mark every crack and note where the water is coming through. Where a crack runs through the wall, crack injection is priced at SAR 40–120 per metre, so measure the total length before you ask for a quote. Clean the internal surface and apply tank internal coating, priced at SAR 25–60 per m², which suits drinking-water tanks when the product is chosen for potable use. Next, treat the roof around the tank: liquid roof waterproofing runs at SAR 8–25 per m², while a bitumen membrane costs SAR 15–35 per m² and an XPS insulation layer adds SAR 12–30 per m² where heat is an issue. Finish with a dry-time check and a refill test before the tank returns to service.

The aim is to locate the cause with instruments first, so any opening is limited to one point.

Signs that call for water tank waterproofing

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

The most common causes

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

Quick comparison: facts and costs in Ahad Almasarihah

Common questions about water tank waterproofing in Ahad Almasarihah

What we advise against

• Using a material that is not intended for drinking water

What you get after the work

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.