Water tank waterproofing for warehouses in Jubail

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

Why water tank waterproofing differs in Jubail

Jubail is about 0.9 km from the sea coast (OpenStreetMap). The centre of Jubail sits about 4 m above sea level (SRTM open elevation data).

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..

Jubail sits low on the Gulf coast, with the centre about 4 m above sea level, and the sea is only about 0.9 km from the town. That combination matters for a water tank. A warehouse tank in a place this flat and this close to the sea has little natural fall to carry water away from its base, and the salty, humid air is hard on exposed steel and concrete. A coating or membrane chosen here has to tolerate both standing moisture and salt, so surface preparation and a sound bond to the tank wall come first.

Those site facts translate into practical choices. The tank internal coating, priced at SAR 25–60 per m², is the main line of defence, because the water inside is what the tank has to hold, and an epoxy-type system must be applied to a dry, clean and sound surface to last near the coast. Where the tank base or lower walls have cracks, crack injection at SAR 40–120 per m is usually scoped before any coating goes on, since a coating laid over a moving crack will fail at that line. For the tank roof and any cover over it, liquid roof waterproofing at SAR 8–25 per m² and bitumen membrane at SAR 15–35 per m² offer different trade-offs in cost and in how they handle movement and sun exposure.

Owners in Jubail tend to avoid a few predictable errors. They do not skip the crack survey and simply paint over leaks. They do not rely on a single cheap roof layer when the tank is exposed to salt air and heat. They also do not treat the base as an afterthought, because standing water sits there longest. Asking for a written scope that separates surface preparation, crack repair and each coating layer makes it easier to compare quotes on like-for-like terms, and it keeps the warehouse tank working through the humid seasons when problems show up.

For warehouses, work is phased around operations and stored goods.

When do you need water tank waterproofing?

The following signs are worth checking before they grow:

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

The most common causes

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

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

What we advise against

• Using a material that is not intended for drinking water

The written outputs

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.