Water tank waterproofing in Aljumum: preventive periodic check

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

What is specific about Aljumum for water tank waterproofing

The centre of Aljumum sits about 200 m above sea level (SRTM open elevation data). Team note on Aljumum: 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 Aljumum sits about 200 m above sea level, according to SRTM open elevation data, and that height shapes where a technician starts. Before anything else, the inspection looks at the upper surfaces and the tank's internal lining, because a site at this elevation is often windier and more exposed to sun on the roof, and the first signs of wear tend to show there. The technician checks for hairline cracks, lifting edges, pooling water and any discolouration that suggests water is getting through. Each finding is noted so the next visit can compare it with the last.

Some decisions are left to the site visit itself, because they depend on what is physically present. The technician confirms the tank material, the age of any existing coating, whether the surface is dry and clean enough to take a new layer, and how far the defect runs. Crack work is measured in metres, so the length of each crack is recorded on the spot. Where a roof is involved, the area is measured in square metres, and the choice between liquid roof waterproofing and a bitumen membrane is made after the surface is seen. Prices are not fixed by the page; the ranges for liquid roof waterproofing (SAR 8–25 per m²), bitumen membrane (SAR 15–35 per m²) and tank internal coating (SAR 25–60 per m²) are only a starting point for the conversation.

Information that helps the technician is worth gathering before the visit. Note the tank's approximate capacity and whether it sits on the roof, at ground level or below ground, since that changes the work. Mention any past repairs, any leaks that were patched, and the last time the tank was emptied and cleaned. Photographs of the surface taken in daylight help show the condition. If the building also has a basement or bathrooms that share a waterproofing history, say so, because the same causes can affect both. Clear notes make the periodic check faster, and they make it easier to see how the tank has changed over time.

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:

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

The most common causes

• Damaged old coating — we check this before anything else.
• Cracks in the walls or floor.
• Construction joints — we check this before anything else.

Tools we use in Aljumum

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.

Facts and costs — Aljumum

Questions from Aljumum

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.