Water tank waterproofing for rest houses & farms in Aljumum

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

Water tank waterproofing in Aljumum: the local context

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 (SRTM open elevation data).

The Aljumum area sits about 200 m above sea level, a height that shapes how water behaves on rest houses and farms here. Lower-lying sites collect runoff more readily, while higher ground drains faster but still needs sound roof and tank protection against sun and wind. Owners in this area tend to rely on rooftop and ground-level storage tanks, so the condition of the tank lining and the surrounding structure matters as much as the water supply itself. Our assessment begins with the site's exposure, the age of existing coatings, and how the tank is filled and drawn down.

Because the centre of Aljumum sits about 200 m above sea level, rest houses here face a drying, sun-heavy climate with sharp temperature swings between day and night. Heat expands and contracts surfaces, which is why we check joints and cracks before choosing a system, and why we often recommend flexible liquid roof waterproofing, typically priced at SAR 8–25 per m², over rigid finishes that crack under movement. Tank internal coating, at SAR 25–60 per m², is set to suit potable water use and to resist the thermal cycling that the elevation brings. For farm properties with ground storage, basement-style protection at SAR 50–150 per m² may be needed where walls sit in contact with the earth. Each recommendation is tied to what the site actually shows, not to a single standard package.

Owners in Aljumum often make the same avoidable mistakes. Many apply a surface coat over a damp or dusty substrate, which lifts within months. Others delay crack repair, even though crack injection at SAR 40–120 per metre is far cheaper than redoing a whole membrane later. Some choose the lowest-cost XPS boards at SAR 12–30 per m² without checking that they suit the load and drainage, or skip the bitumen membrane at SAR 15–35 per m² where it is needed. Finally, treating bathrooms with spray foam at SAR 20–45 per m² or epoxy at SAR 35–90 per m² without proper preparation is a common cause of early failure. Planning the work around these points keeps the result sound for longer.

Rest houses and farms often have long buried lines, tanks and irrigation that need separate tests.

Signs worth paying attention to

The following signs are worth checking before they grow:

• 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 — we check this before anything else.
• A common cause: damaged old coating.
• Construction joints.

How we choose the tool 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

Common questions about water tank waterproofing in Aljumum

Common mistakes we see

• 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.