Water tank waterproofing for apartments in Alqunfudhah

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

Why water tank waterproofing differs in Alqunfudhah

The centre of Alqunfudhah sits about 7 m above sea level (SRTM open elevation data). Alqunfudhah is about 0.4 km from the sea coast (OpenStreetMap).

Team note on Alqunfudhah: 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..

An apartment owner in Alqunfudhah often notices a damp patch on a bathroom wall or a stain on the ceiling of the top floor and wonders whether the water tank on the roof is the cause. Tanks in a building like this are exposed to strong sun and temperature swings, so their walls and seams can crack over time, and the leak may only show up far below. Because the tank serves the whole building, a small fault quickly becomes a shared concern among the owners.

The local facts shape how you should think about this. The centre of Alqunfudhah sits about 7 m above sea level, and the town is about 0.4 km from the sea coast. Being this close to the coast means salt-laden air and humidity can speed up deterioration of exposed surfaces, so a coating that works well inland may not last as long here. For an owner, this points to choosing a tank lining and sealing system suited to a damp coastal environment rather than relying on a cheap surface fix that will fail again within a few seasons.

A sensible sequence starts with an inspection of the tank from both inside and out, marking every crack, seam and corner that shows moisture. Next, clean and dry the surfaces and repair any cracks, using crack injection where the faults run in a line; the rate for this is SAR 40–120 per metre. Then apply a tank internal coating, which typically costs SAR 25–60 per m², and check the roof around the tank, where liquid roof waterproofing at SAR 8–25 per m² or a bitumen membrane at SAR 15–35 per m² can stop water entering from above. Finally, ask for a written scope, confirm the exact square metres being treated, and keep the record so future owners know when the tank was last sealed.

In apartment buildings, the floor below is often where a leak shows first.

When do you need water tank waterproofing?

The following signs are worth checking before they grow:

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

Causes we see in the field

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

Tools and methods, and when we use them

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.

Facts and costs — Alqunfudhah

Common questions about water tank waterproofing in Alqunfudhah

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.