Water tank waterproofing for schools in Rastanura

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

Before we start: what we know about Rastanura

Team note on Rastanura: 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.. Rastanura is about 0.2 km from the sea coast (OpenStreetMap).

Water tanks at schools in Rastanura are usually the first place where leaks go unnoticed. Rooftop and ground-level tanks sit in full sun for much of the year, so the coating and joints expand and contract daily, and small cracks open up over time. Staff often only see the problem when water shows up in a classroom ceiling or a corridor wall, by which point the tank lining has been failing for months. Tank internal coating typically falls in the range of SAR 25–60 per m², and crack injection is priced at SAR 40–120 per metre, so catching the defect early is usually the cheaper route.

Rastanura is about 0.2 km from the sea coast, which changes the approach. Salt-laden air settles on exposed surfaces and can speed up deterioration of coatings and metal fittings, so the choice of material matters more here than it would inland. Epoxy coating, priced at SAR 35–90 per m², is often considered for tank interiors because it forms a continuous film, while liquid roof waterproofing at SAR 8–25 per m² may suit the exposed top surfaces of tank covers and adjacent roof areas. Bitumen membrane, at SAR 15–35 per m², is another option for roof zones, though the final selection depends on the condition of the existing surface and how the tank is accessed for maintenance.

Before the visit, ask the provider to confirm which tank and roof areas are included in the quote and whether the price is per square metre, per metre of crack, or a combination of both. Ask how they plan to handle the sea-air exposure, which coating systems they would recommend for both the interior and exterior, and whether the tank can be drained safely during school hours. It also helps to ask who will manage access, since a tank serving a school needs to be isolated without disrupting classes. A clear written scope gives the school and the contractor the same picture before any work starts.

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

When do you need water tank waterproofing?

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

Causes we see in the field

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

How we choose the tool in Rastanura

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.

Quick comparison: facts and costs in Rastanura

Short answers for Rastanura

What we advise against

• 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.