Water tank waterproofing for schools in Alrass

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

What is specific about Alrass for water tank waterproofing

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.. Main roads in or near Alrass: King Abdulaziz Road, King Fahd Road, King Salman Road.

The centre of Alrass sits about 695 m above sea level (SRTM open elevation data).

Should a school's water tank be waterproofed, and what will it cost? For most property owners in Alrass, the answer depends on the condition of the tank and the type of coating chosen. The centre of Alrass sits about 695 m above sea level (SRTM open elevation data), and that setting matters for how a site is planned and maintained. Tank internal coating is priced at SAR 25–60 per m², which is the figure a school administrator will usually compare first when a tank shows seepage or flaking. Epoxy coating, at SAR 35–90 per m², is another option worth discussing when the tank surface needs a tougher finish.

When we inspect a school tank, the visit starts with a walk around the outside to check for staining, cracks and any signs of moisture at the base of the walls. The inspector then looks at the inside of the tank, noting where the existing lining has peeled or where water is collecting. Cracks are measured along their length, because crack injection is priced at SAR 40–120 per metre. Surfaces are then measured in square metres so the estimate can be built from the proper area. If the tank sits on a structure that is partly below ground, the inspector also notes whether basement waterproofing, priced at SAR 50–150 per m², may be relevant to the wider site.

Before the visit, it helps to gather a few items so the inspection can move quickly. Keep any previous maintenance records, plumbing drawings and notes about past leaks, and tell the team when the tank was last drained and cleaned. Make sure the tank can be accessed safely and that the water level can be lowered if the inspector needs to see the inner walls. Clear the area around the tank and the roof access route so equipment can be brought in without delay. With these details ready, the team can give the school a clear picture of the work needed and the likely cost.

For schools, the larger jobs are planned for weekends and holidays.

Signs worth paying attention to

These are the signs most often linked to water tank waterproofing:

• 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.
• Damaged old coating — we check this before anything else.

Tools and methods, and when we use them

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.

Alrass in facts and sources

Common questions about water tank waterproofing in Alrass

Mistakes that cost more

• 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.