Water tank waterproofing in Alqurayyat: with a verifiable technical report

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

Why water tank waterproofing differs in Alqurayyat

The centre of Alqurayyat sits about 497 m above sea level (SRTM open elevation data). Team note on Alqurayyat: 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 in Alqurayyat are most often let down by hairline cracks in the concrete walls and floor, and by coatings that were applied over a dirty or damp surface and have since lifted. Because the tank is usually sealed from the inside, leaks can go unnoticed until the water level drops or damp patches appear on the outside of the wall. Crack injection is typically priced at SAR 40–120 per metre, while a full internal coating is priced at SAR 25–60 per m², so the right approach depends on whether the problem is localised or spread across the whole surface.

Alqurayyat's setting shapes the job. The centre of Alqurayyat sits about 497 m above sea level (SRTM open elevation data), which places it on a higher plateau where tanks are often filled from rooftop or ground-level sources at varying pressures. That elevation matters less for the coating itself than for the way the tank is used: frequent drawing and refilling flexes the joints and walls, so an installer should look at the joints and corners first rather than only the open wall areas. Where a tank is used as a supply reserve, a full internal coating is usually more sensible than repeated patching. Any roof or top slab should be checked too, since liquid roof waterproofing (SAR 8–25 per m²) and bitumen membrane (SAR 15–35 per m²) are the usual options there, and the choice between them depends on how exposed the roof is.

Before the visit, ask the provider to confirm the tank's capacity and material, whether the leak is inside or outside, and whether the water must be fully drained for the work. Ask how the surface will be prepared, since most failed coatings come from poor preparation rather than the product itself. Request an itemised quote that shows the area, the unit rate and any crack-injection length, and ask how long the tank must stay empty before refilling. Finally, ask for a written description of the materials to be used, so you can compare the finished job with what was agreed.

Each job ends with a written report that carries a verification code you can check on our site.

When do you need water tank waterproofing?

The following signs are worth checking before they grow:

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

The most common causes

• Construction joints.
• Damaged old coating — we check this before anything else.
• Cracks in the walls or floor.

Tools we use in Alqurayyat

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.

Facts and costs — Alqurayyat

Questions from Alqurayyat

What we advise against

• 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.