Water tank waterproofing in Jubail: for companies (annual contract)

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

Water tank waterproofing in Jubail: the local context

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).

Does a company in Jubail need its water tanks waterproofed every year, and what does that involve? The centre of Jubail sits about 4 m above sea level, and the city is about 0.9 km from the sea coast. Those two facts mean tanks and the structures around them can be exposed to damp, salt-laden air, so a regular check of the tank's internal coating and external seals is a sensible part of a company's annual maintenance. Tank internal coating is priced at SAR 25–60 per m², and that rate is the starting point for budgeting a yearly tank programme. Other coatings and membranes, such as epoxy, spray foam or bitumen, are better matched to the specific surfaces on your site and are quoted separately.

An inspection usually begins with a walk around the tank and its supports to look for cracks, blistering, flaking coating or staining that shows water is getting through. Where a crack is found, it is measured and recorded, because crack injection is charged per metre, at SAR 40–120 per m. The inspector then checks the tank's internal surfaces for coating breakdown and notes the area that needs to be re-coated. Roof and surrounding areas are checked too, since liquid roof waterproofing is charged at SAR 8–25 per m² and a leak above the tank can cause as much trouble as one in it. The result is a written list of findings, with the measured areas and lengths that drive the quote, so the company can decide what to repair now and what to monitor over the year.

Before the visit, it helps to gather a few things so the inspection runs smoothly. Make sure the tank can be reached safely, with access arranged and any water level drawn down if the inspector needs to see the internal surfaces. Have the tank's age, any earlier repair records and any known leak locations ready, along with plans or sketches showing the tank's dimensions and the roof area around it. Note any places where staff have seen damp, staining or unusual water pressure drops. With this information to hand, the inspector can measure accurately and give your company a clear, itemised estimate for the year ahead.

For companies, an annual contract sets the scope, the visit schedule and the reports in writing.

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

Tools and methods, and when we use them

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.

Quick comparison: facts and costs in Jubail

Common questions about water tank waterproofing in Jubail

Mistakes that cost more

• 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.