Water tank waterproofing in Jubail: without breaking

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

Why water tank waterproofing differs in Jubail

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).

Can a water tank be waterproofed in Jubail without draining the whole building or tearing out the roof? Many owners here ask exactly that, and the answer depends on where the tank sits and how it is built. Jubail's centre sits about 4 m above sea level, and the town is about 0.9 km from the sea coast, so the salt-laden coastal air and the damp ground that comes with that location are the conditions a tank has to cope with year after year. Those conditions are why a leak found early is far easier to treat than one left to spread.

The inspection comes first. A technician looks at the tank walls, the floor, the joints and the cover, and marks any cracks or damp patches. Where a crack runs through the concrete, crack injection is priced per metre, typically SAR 40–120 per m, and it seals the line without opening the structure. For the inside of the tank, tank internal coating is priced per m², typically SAR 25–60 per m², and an epoxy coating, typically SAR 35–90 per m², is an option where a harder surface is wanted. Any work on the roof above the tank is quoted separately, with liquid roof waterproofing typically SAR 8–25 per m² and bitumen membrane typically SAR 15–35 per m². The technician then confirms which areas need treatment and gives a quote for each one, so you know the scope before any work begins.

Before the visit, clear access to the tank cover and the area around it, and note when you first saw damp, staining or a drop in the water level. Tell the technician whether the tank holds drinking water, since that affects the materials chosen. Have the building's access details and any earlier repair records to hand, and make sure someone who knows the water supply is available to answer questions. With this ready, the inspection can move quickly, and you leave with a clear plan for repairing the tank without breaking open the rest of the property.

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

Signs worth paying attention to

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

Where the problem usually comes from

• Construction joints.
• A common cause: damaged old coating.
• A common cause: cracks in the walls or floor.

How we choose the tool in Jubail

From the first visit to the report

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

Questions from Jubail

Common mistakes we see

• 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.