Water tank waterproofing for apartments in Rastanura

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

Water tank waterproofing in Rastanura: the local context

Rastanura is about 0.2 km from the sea coast (OpenStreetMap). 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..

Water tank waterproofing in apartment buildings in Rastanura usually starts with a leak that nobody can see from the outside. Roof tanks and ground-level tanks crack, lose their internal coating, and seep slowly into the slab or the walls below, so residents notice damp patches or rust stains long before they find the source. In most apartment blocks the tank sits on a roof or podium that already takes heavy sun, so the first job is to check whether the tank lining, the joints and the roof surface beneath it are all failing together.

Rastanura is about 0.2 km from the sea coast, and that short distance changes the approach. Salt-laden air settles on exposed surfaces and speeds up corrosion of any metal fittings, ladders and brackets near the tank, so the surrounding areas need to be treated along with the tank itself. Coastal humidity also keeps surfaces damp for longer, which means the prepared surface has to be dry and clean before any coating goes on. Where tank internal coating is needed, it is priced at SAR 25–60 per m², while liquid roof waterproofing on the slab underneath is SAR 8–25 per m², and the two are usually planned together so one does not fail because of the other.

Before the visit, ask the provider to confirm which parts of the job are included: the tank interior, the roof area around it, any cracks that need crack injection at SAR 40–120 per metre, and whether the work covers the bathroom or basement below if water has travelled there. Ask how the coating will be protected from salt air and how long the tank will be out of use. Ask for a written quote that shows the rate per square metre or per metre for each item, so you can check the figures against the ranges above. A clear list of what is being done in the apartment and what is not will prevent most disputes later.

In an apartment, a problem may start in your unit or in a shared line; we separate the two before any work.

Signs that call for water tank waterproofing

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

Causes we see in the field

• A common cause: construction joints.
• A common cause: damaged old coating.
• 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.

Rastanura in facts and sources

Questions from Rastanura

Mistakes that cost more

• Using a material that is not intended for drinking water

What you receive

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.