Water tank waterproofing in Baqiq: before summer & rain season

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

Water tank waterproofing in Baqiq: the local context

Main roads in or near Baqiq: King Fahd Road. The centre of Baqiq sits about 83 m above sea level (SRTM open elevation data).

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..

Water tanks in Baqiq are most often let down by the same problem: a hairline crack or a worn coating on the inside wall that lets water seep through slowly, so the owner only notices a damp patch, a musty smell, or a drop in water quality long after the damage has started. Rooftop tanks are especially exposed because the sun heats the concrete and the metal, causing it to expand and contract until small cracks open at the joints and corners. Before any work begins, it is worth confirming whether the leak is coming from the tank walls, the base, or the pipework feeding it, since a coating will not fix a leaking connection.

Baqiq sits at roughly 83 m above sea level, which is a modest elevation, but it still means the tank is in full sun for much of the day with no shade from tall buildings on the roof. That constant heat is why the approach here leans toward coatings that stay flexible and bond well to concrete, rather than rigid finishes that crack when the surface moves. For the tank interior, a tank internal coating is typically priced at SAR 25–60 per m², and the surface should be cleaned and dried thoroughly before any product goes on. Where a crack is clearly active, crack injection at SAR 40–120 per metre is usually the first step, so the line is sealed before the wider coat is applied. Liquid roof waterproofing, at SAR 8–25 per m², suits the top of the tank and the surrounding slab, while spray foam at SAR 20–45 per m² can be considered for irregular surfaces.

Before the visit, ask the provider to explain how they will locate the source of the leak, whether they will test the tank after the work, and how long the coating needs to cure before the tank is refilled. Ask what preparation they expect you to do, such as draining the tank and clearing the roof, and get the scope written down with a per-m² or per-metre breakdown so the final cost is easy to check. It also helps to ask whether they plan to work before the summer heat peaks or during the rain season, because timing affects how well the product cures.

Checks before summer and before the rain season catch problems while they are still small.

Signs that call for water tank waterproofing

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

The most common causes

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

How we choose the tool in Baqiq

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.

Quick comparison: facts and costs in Baqiq

Short answers for 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.