Water tank waterproofing in Tabarjal: preventive periodic check

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

Why water tank waterproofing differs in Tabarjal

Team note on Tabarjal: 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 Tabarjal sits about 548 m above sea level (SRTM open elevation data).

Water tanks on rooftops and at ground level in Tabarjal, which sits about 548 m above sea level, are most often affected by slow seepage through the tank walls and base, not by sudden failure. Hairline cracks and aged internal coatings let water in and out over time, and the damage often stays hidden until staining or a drop in supply appears. A periodic preventive check catches these early signs, before the problem spreads to the slab or to the rooms below.

The elevation matters because it shapes how the tank is used and how it ages. At this altitude, the approach focuses on the tank's internal lining and its joints rather than only on the surface outside. A tank internal coating, priced at SAR 25–60 per m², is typically the first thing to inspect, while a crack injection at SAR 40–120 per metre may be enough where the damage is limited to one seam. Where the tank sits on a roof, liquid roof waterproofing at SAR 8–25 per m² and a bitumen membrane at SAR 15–35 per m² are common options for the surrounding area, and the choice depends on what the inspection reveals rather than on a fixed rule.

Before the visit, ask the provider to explain what the inspection covers: whether it checks the internal lining, the joints, the roof surface and the overflow pipe, and whether the findings will be shown to you in writing before any work starts. Ask how the cost is set out per m² or per metre, so you can compare the figures against the ranges above. Confirm which materials will be used, such as an epoxy coating at SAR 35–90 per m² or spray foam at SAR 20–45 per m², and ask how the tank will be kept in service during the work. A clear list of questions at the start makes the preventive check easier to plan and to judge.

Preventive checks follow a written schedule instead of waiting for a fault.

When do you need 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

• Cracks in the walls or floor.
• Damaged old coating.
• A common cause: construction joints.

How we choose the tool in Tabarjal

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 Tabarjal

Common questions about water tank waterproofing in Tabarjal

What we advise against

• 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.