Water tank waterproofing for duplexes in Tabuk

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

Water tank waterproofing in Tabuk: the local context

Team note on Tabuk: 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 Tabuk sits about 762 m above sea level (SRTM open elevation data).

Is it worth coating the water tank on a duplex in Tabuk, and what will it cost? Tabuk sits about 762 m above sea level, a high-altitude city where hot days and cool nights put real stress on rooftop tanks and their seals. For a duplex owner, the practical answer depends on the condition of the tank's inner surface and the joints. Internal tank coating is priced at SAR 25–55 per m², and crack injection, where a hairline leak is tracing a path, is priced at SAR 40–115 per m. Many owners find that addressing a single leaking joint costs far less than replacing a tank, so a short inspection is a sensible first step before deciding on a full treatment.

The visit normally starts with a check of the tank's inner walls, floor and corners for flaking, chalking or hairline cracks, followed by a look at the outer surfaces and the roof slab beneath the tank for signs of staining or damp. The technician will note where water has been travelling, since leaks often show up as dark tracks well away from the source. Where the tank sits on a roof, the surrounding liquid roof waterproofing, priced at SAR 10–25 per m², will be assessed alongside it, because a failing roof membrane can mimic a tank leak. The inspection should end with a clear list of which areas need work and which can be left alone, so you are not paying to coat surfaces that are still sound.

Before the visit, empty the tank as far as practical and leave it empty for a day so the surfaces can be seen clearly. Clear access to the tank lid, the roof hatch and the ladder route, and move any stored items away from the walls. Note when you first noticed damp, the rooms or ceilings affected, and whether the water level in the tank drops faster than usual. Keep your title or tenancy details and any earlier repair invoices to hand, since they help the technician understand what has already been done. With this information ready, the inspection can focus on the real problem and give you a quote you can compare with confidence.

In a duplex, the two floors often share lines, so tests are done floor by floor.

Signs that call for water tank waterproofing

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

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

Causes we see in the field

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

How we choose the tool in Tabuk

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.

Facts and costs — Tabuk

Short answers for Tabuk

Mistakes that cost more

• Using a material that is not intended for drinking water

What you receive

You receive: the material name, its batch number and the fill-test result, in a technical report with a verification code.