Water tank waterproofing in Jubail: cost & published offers

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

Before we start: what we know about 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).

The centre of Jubail sits about 4 m above sea level, and the city lies about 0.9 km from the sea coast. Both facts shape how water tank waterproofing is planned here. A site this close to the coast and this low-lying can see salt-laden air and a high water table, so tank linings and fixings need to resist moisture and salt rather than only standing water. Installers typically check the surface condition and the tank's exposure before recommending a system, because the coastal setting affects how quickly coatings can fail if they are not matched to the environment.

The published price ranges cover a wide spread of work, and the category you need determines the rate. Tank internal coating is priced at SAR 25–60 per m², which is the line most relevant to a water tank itself. For comparison, the same kind of area might also be treated with epoxy coating at SAR 35–90 per m², while liquid roof waterproofing runs SAR 8–25 per m² and bitumen membrane SAR 15–35 per m². Spray foam is SAR 20–45 per m², XPS boards SAR 12–30 per m², and crack injection SAR 40–120 per metre. Where a tank sits in a basement, basement waterproofing at SAR 50–150 per m² may apply instead, so confirming the exact location of the work helps you read the right range.

Owners in Jubail commonly avoid several errors that drive up cost or shorten the life of a repair. They do not assume one system suits every surface, and they do not skip crack injection when cracks are visible, since small leaks can spread. They also avoid choosing the lowest per-metre figure without checking what the quoted area includes, and they do not leave a tank uncoated because the water looks clean. Comparing ranges line by line, and asking which system the price assumes, keeps the decision grounded in the actual work rather than the headline number.

Prices shown on this page come from our own published price list for the city; the final price is set after inspection.

Signs worth paying attention to

If you notice one of these signs in Jubail, it is a good moment to talk to the team:

• 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

• A common cause: construction joints.
• Damaged old coating.
• A common cause: cracks in the walls or floor.

How we choose the tool in Jubail

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 — Jubail

Common questions about water tank waterproofing in Jubail

Common mistakes we see

• 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.