Water tank waterproofing for restaurants in Alrass

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

Why water tank waterproofing differs in Alrass

The centre of Alrass sits about 695 m above sea level (SRTM open elevation data). Main roads in or near Alrass: King Abdulaziz Road, King Fahd Road, King Salman Road.

Team note on Alrass: 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..

Is it worth coating a restaurant's water tank when the tank still holds water? In Alrass, which sits about 695 m above sea level according to SRTM open elevation data, many owners ask whether a tank can be treated while it stays in use or whether the job waits until it is empty. The answer depends on the coating system chosen and the condition of the tank walls. Tank internal coating is priced at SAR 25–60 per m², and epoxy coating at SAR 35–90 per m², so the cost of treating the inside of a tank is easy to estimate once the surface area is known. Owners who want a cheaper route for the tank exterior or the roof can compare liquid roof waterproofing at SAR 8–25 per m² with a bitumen membrane at SAR 15–35 per m².

The inspection starts with a walk around the tank and a close look at the interior, where the surveyor marks any cracks, damp patches, flaking paint or signs of past repairs. Cracks are measured in metres, because crack injection is priced at SAR 40–120 per metre, and that length goes into the quote alongside the surface areas. The surveyor then checks how each surface can be reached, whether the roof has been used for storage and whether any insulation, such as XPS boards at SAR 12–30 per m², is already in place or needs to be added. The findings are recorded so the owner can see exactly which areas need work and why each method was chosen.

Before the visit, the owner should clear access to the tank and its roof, and note how long the restaurant can go without drawing water from the tank so that the work can be planned around service hours. It helps to have the tank's approximate dimensions and any earlier repair records ready, as well as details of the roof's use. Keeping a record of when the tank was last cleaned and whether leaks have appeared inside the kitchen or dining area also gives the surveyor useful clues. With these details in hand, the visit is quicker and the quote reflects the real condition of the tank rather than guesses.

For restaurants, visits are planned outside service hours and recorded for the premises file.

Signs that call for water tank waterproofing

The following signs are worth checking before they grow:

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

Where the problem usually comes from

• Damaged old coating — we check this before anything else.
• Cracks in the walls or floor — we check this before anything else.
• A common cause: construction joints.

How we choose the tool in Alrass

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 Alrass

Common questions about water tank waterproofing in Alrass

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.