Water tank waterproofing in Jazan: emergency

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

Why water tank waterproofing differs in Jazan

Team note on Jazan: 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 Jazan sits about 7 m above sea level (SRTM open elevation data).

Jazan is about 1.9 km from the sea coast (OpenStreetMap).

Is a leaking water tank in Jazan an emergency that needs to be fixed the same day? Often it is, especially when water is seeping into a ground-floor room or the tank is running dry faster than usual. Jazan's centre sits about 7 m above sea level, and the city is roughly 1.9 km from the sea coast. That combination of low elevation and coastal humidity means that moisture can work its way into concrete and stored water quickly, so a small leak should not be left to wait. Our team treats tank leaks as urgent calls and aims to get to the property as soon as the problem is reported.

The inspection starts with finding where the water is actually getting out. The technician checks the tank's internal surfaces for hairline cracks, damp patches, and loose or peeling old coating, and also looks at the joints where the tank meets its base and walls. Where cracks are found, crack injection is usually the first option to discuss, priced at SAR 40–120 per metre. For wider areas of breakdown, the technician will talk through tank internal coating, priced at SAR 25–60 per m², and may recommend clearing out the old material before any new layer goes on. The aim of the visit is to identify the source of the leak, not to cover it over, so the findings are explained before any work begins.

Before the visit, it helps to prepare a few things so the technician can assess the problem quickly. Note when you first noticed the leak, whether the water loss is steady or only happens when the tank is full, and which areas of the building are showing damp. Clear access to the tank and the roof area, and switch off the supply pipe to the tank if you can do so safely, so that the inspection is not affected by water still flowing in. Have photographs of the damp spots ready, and make a note of the tank's approximate size and age if you know them. This information lets the team bring the right tools and give you a clearer estimate on the day.

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

When do you need water tank waterproofing?

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

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

Causes we see in the field

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

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.

Quick comparison: facts and costs in Jazan

Short answers for Jazan

What we advise against

• Using a material that is not intended for drinking water

What you receive

You receive: the material name, its batch number and the fill-test result, in a technical report with a verification code.