Water tank waterproofing in Taif: before buying or handover

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

Before we start: what we know about Taif

Team note on Taif: 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 Taif sits about 1673 m above sea level (SRTM open elevation data).

Picture a homeowner in Taif who is about to buy a villa, or who has just received the keys to a newly built one. The rooftop water tank is out of sight, so it rarely gets attention until a damp patch appears on a ceiling or the water starts to taste wrong. By then the cost of repair has usually grown. For this buyer, the water tank deserves a proper inspection before the sale closes or the handover is signed, because the tank is a long-term asset that the new owner will live with every day.

Taif sits at a high altitude, with the centre about 1673 m above sea level. Cooler nights and sharp temperature swings can stress roof structures and the coatings on them, and the building's upper levels are the first to show movement. For an owner, this means that a tank's internal coating and the surfaces around it should be checked more carefully than the price alone suggests. Tank internal coating is priced at SAR 25–55 per m², and a small tank can need only a few square metres of work, so it is worth comparing quotes on the actual surface area rather than on a flat figure. Liquid roof waterproofing, at SAR 10–25 per m², and bitumen membrane, at SAR 15–35 per m², protect the roof that the tank sits on, so the two should be inspected together.

Start by asking the seller or developer for any previous waterproofing records and warranty papers. Next, walk the roof and the tank area after dark or on a rainy day if possible, looking for staining, peeling, or cracks. Measure the tank's internal and roof surfaces so you know the real area. Ask for at least two written quotes that state the scope, materials, and measurements, and check whether crack injection, priced at SAR 40–115 per metre, is included where cracks exist. Confirm who is responsible for repairs if leaks appear within the first months after handover. Finally, get everything in writing before you pay, so the handover is recorded with clear responsibilities for both sides.

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

Signs that call for water tank waterproofing

These are the signs most often linked to water tank waterproofing:

• 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.
• Damaged old coating.

How we choose the tool in Taif

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.

Taif in facts and sources

Questions from Taif

Common mistakes we see

• Using a material that is not intended for drinking water

The written outputs

The written output: the material name, its batch number and the fill-test result. The report is numbered and can be checked with its verification code.