Water tank waterproofing for rest houses & farms in Jubail

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.. 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).

Does a water tank on a rest house or farm in Jubail really need waterproofing, given how close the town sits to the coast? The answer depends on local conditions, and the facts show why this matters. The centre of Jubail sits about 4 m above sea level, and the town is about 0.9 km from the sea coast. That combination means the ground and the air around a storage tank are often damp and salt-laden, so a tank that is not properly sealed can leak, lose water, and deteriorate faster than owners expect. Tank internal coating is priced at SAR 25–60 per m², which is the usual route for sealing the inside of a tank, while outside surfaces may need liquid roof waterproofing at SAR 8–25 per m² or a bitumen membrane at SAR 15–35 per m² where the tank sits on a roof or exposed slab.

A proper inspection begins with the tank body and its joints. The inspector looks for cracks, since crack injection is priced at SAR 40–120 per metre and is often needed before any coating can bond well. The surfaces are checked for flaking, damp patches, and old coatings that have failed. Where the tank rests on a concrete base or roof, the contact points and drainage are examined, and the inspector notes whether an XPS board layer at SAR 12–30 per m² would help insulate the tank from heat and temperature swings. Each finding is recorded so the owner can see exactly which areas need work and why.

Before the visit, it helps to empty the tank as much as possible and make sure the access hatch, ladder, and surrounding area are clear. Note any past leaks, repairs, or previous coatings, and bring any earlier paperwork. Confirm the tank's size and material if you know it, and point out any areas where water has been seen staining walls or ground. Keeping the site accessible and the history clear allows the inspection to focus on what matters, and it gives you a realistic picture of the work before any decision is made.

Rest houses and farms often have long buried lines, tanks and irrigation that need separate tests.

Signs that call for water tank waterproofing

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

Where the problem usually comes from

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

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.

Facts and costs — Jubail

Questions from Jubail

Mistakes that cost more

• 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.