Water tank waterproofing for apartments in Baqiq

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

Before we start: what we know about Baqiq

Team note on Baqiq: 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 Baqiq sits about 83 m above sea level (SRTM open elevation data).

Main roads in or near Baqiq: King Fahd Road.

Water tanks on apartment roofs in Baqiq are the most common source of leaks that show up as damp patches on the top-floor ceilings below. Over time, the concrete walls and floor of a tank can crack or lose their protective layer, letting water seep into the structure and sometimes into the flat beneath. Because the tank sits on the roof, a leak is often discovered only after staining has already spread, so a tank that has not been inspected in several years is worth checking before the damage grows.

Baqiq sits about 83 m above sea level, so the local approach is shaped by the site's position on higher ground rather than by low-lying flood risk. Tank inspection and repair here focus on sealing the tank interior and the roof junction, since that is where water pressure and movement typically find a weak point. Common options include tank internal coating at SAR 25–60 per m², crack injection at SAR 40–120 per metre for visible cracks, and liquid roof waterproofing at SAR 8–25 per m² where the roof surface around the tank also needs protection. For the tank base or walls that are exposed, bitumen membrane at SAR 15–35 per m² and XPS boards at SAR 12–30 per m² are sometimes used as part of a layered solution.

Before the visit, ask the provider to confirm which part of the building is affected and whether the leak comes from the tank, the roof surface, or a pipe connection. Ask them to explain which method they recommend and why, and to give you a written estimate using the per-square-metre or per-metre rates that apply. It also helps to ask how long the repair area will need to dry before the tank is refilled, and whether the building's management or residents need to be informed in advance, since tank access may affect shared water supply.

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

Signs worth paying attention to

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

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

Causes we see in the field

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

How we choose the tool in Baqiq

From the first visit to the report

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 Baqiq

Common questions about water tank waterproofing in Baqiq

Mistakes that cost more

• Using a material that is not intended for drinking water

The written outputs

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