Water tank waterproofing in Dhahran: before buying or handover

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

What is specific about Dhahran for water tank waterproofing

The centre of Dhahran sits about 16 m above sea level (SRTM open elevation data). Dhahran is about 5.9 km from the sea coast (OpenStreetMap).

Team note on Dhahran: 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..

A property owner in Dhahran, buying a home or taking over a unit from a previous occupant, often inherits a rooftop water tank whose condition nobody has recently checked. The tank may look fine from the outside while leaking at seams, joints or the base, and the owner only learns of the problem when staining or damp appears in the rooms below. The decision to act is usually made quickly, so a clear plan helps before any money changes hands.

The local facts shape what to expect. The centre of Dhahran sits about 16 m above sea level, and the city is about 5.9 km from the coast. Being inland at that height means the tank is not exposed to the same direct coastal conditions as a seafront building, but the area's climate still places demands on sealed surfaces, so the coating or membrane chosen should be suited to repeated heating and cooling. Pricing also varies widely by method: tank internal coating is quoted at SAR 25–60 per m², while liquid roof waterproofing runs at SAR 8–25 per m², so the scope of work changes the budget considerably.

Start by asking for the tank's age, any previous repair records and the date of the last cleaning. Inspect the inside if access allows, looking for cracks, flaking, rust and damp patches around the base and seams, and note any crack length in metres, since crack injection is priced per metre at SAR 40–120 per m. Compare two or three written quotes that state the area in square metres, the materials and the warranty terms in writing. Confirm whether the work includes draining, cleaning and a test fill before the tank is returned to use. Finally, keep every invoice and photograph so the next owner has a record of the work done.

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 Dhahran, it is a good moment to talk to the team:

• 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.
• Cracks in the walls or floor — we check this before anything else.
• Construction joints.

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 — Dhahran

Questions from Dhahran

What we advise against

• 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.