Water tank waterproofing in Alqunfudhah: before buying or handover

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

What is specific about Alqunfudhah for water tank waterproofing

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.. Alqunfudhah is about 0.4 km from the sea coast (OpenStreetMap).

The centre of Alqunfudhah sits about 7 m above sea level (SRTM open elevation data).

The first thing to check in Alqunfudhah is the site's position on the coast. The centre of Alqunfudhah sits about 7 m above sea level (SRTM open elevation data), and it is about 0.4 km from the sea coast (OpenStreetMap). Those two facts together mean that a tank here is close to salt-laden air and a shallow, low-lying water table, so the surfaces that meet damp ground and humid air deserve a careful look before any price is agreed. Check the tank's external walls and base first, then the joints where the tank meets the roof slab and the inlet and outlet pipe penetrations. Ask the installer which product they intend to use and why, and make sure the quoted rate matches the work described on the page, whether that is tank internal coating at SAR 25–60 per m², epoxy coating at SAR 35–90 per m², or a membrane at SAR 15–35 per m².

Some matters can only be settled on the site visit. The technician needs to see the actual condition of the tank walls, whether there are cracks, efflorescence or old patches, and how much surface area needs treatment before a fair figure can be given. Crack repair is charged by length, so the number of metres of crack injection at SAR 40–120 per m will depend on what is found, not on what was assumed. The access route for materials, the ability to drain and dry the tank, and any previous repairs are also judged in person. The surrounding roof slab, if it drains toward the tank, should be inspected at the same visit.

To help the technician, have the following information ready: the approximate capacity and age of the tank, whether it is above ground or below, the material it is built from, any known leaks and where they appear, and what has been used on it before. Note whether the tank is for drinking water, because that changes which coatings are suitable. Describe any problems with the roof, such as ponding after rain, and say whether the bathroom or the basement shares a wall with the tank. Clear, specific answers at this stage allow the technician to recommend the right system and give a quote that reflects the real work needed in Alqunfudhah.

Before buying or taking over a property, an inspection gives you findings in writing before you sign.

Signs worth paying attention to

If you notice one of these signs in Alqunfudhah, it is a good moment to talk to the team:

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

Where the problem usually comes from

• A common cause: construction joints.
• Cracks in the walls or floor — we check this before anything else.
• Damaged old coating — we check this before anything else.

Tools and methods, and when we use them

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 — Alqunfudhah

Questions from Alqunfudhah

Mistakes that cost more

• Using a material that is not intended for drinking water

What you get after the work

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