Water tank waterproofing in Jubail: emergency

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

What is specific about Jubail for water tank waterproofing

Team note on Jubail: 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 Jubail sits about 4 m above sea level (SRTM open elevation data).

Jubail is about 0.9 km from the sea coast (OpenStreetMap).

A villa owner in Jubail notices water seeping through the wall of the rooftop tank one morning. The stain is spreading, the water smells faintly of rust, and the household needs water for daily use. In a situation like this, the owner wants to know what is causing the leak, whether the tank can be repaired quickly, and how much a proper fix will cost before anyone starts work.

The local facts matter here. The centre of Jubail sits about 4 m above sea level, and the town is about 0.9 km from the sea coast. Being so close to the coast means the air is humid and salty, and salt can speed up corrosion of metal fittings and cracking in concrete. A tank in this location is therefore exposed to more moisture and salt than one inland, so small cracks and failing seals can worsen faster than expected. The owner should treat any leak as urgent and inspect the tank walls, lid, and outlet fittings rather than assuming the problem is limited to one spot.

Start by switching off the supply pipe from the tank so the leak stops getting worse, and place a container under the drip to measure how fast water is being lost. Next, dry the area and mark the wet patches so you can see whether the leak is growing. Check the joints, fittings, and any visible hairline cracks on the tank's outer surface. Photograph the damage clearly, which helps when comparing quotes. Then arrange for a professional to inspect the inside of the tank, since many leaks start from the inner face. Ask for a written quote that shows the area to be treated in square metres and the cost per square metre for each material proposed, such as a tank internal coating priced at SAR 25–60 per m² or a crack injection priced at SAR 40–120 per metre. Finally, agree on a timeline, confirm the water supply plan during the repair, and check the finished work before refilling the tank.

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
• A tank that leaks after testing
• Deposits and flaking inside the tank

Where the problem usually comes from

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

Tools and methods, and when we use them

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.

Jubail in facts and sources

Short answers for Jubail

What we advise against

• Using a material that is not intended for drinking water

What you get after the work

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