Water tank waterproofing for residential buildings in Taif

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

Water tank waterproofing in Taif: the local context

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).

Water tanks on residential roofs in Taif are a common source of leaks, and the usual problem is seepage through the concrete walls and floor joints rather than a single hole. Over time, the internal surface of a tank can crack, lose its protective finish, and let water pass into the structure below. Owners often notice damp patches on ceilings or a drop in water quality before they realise the tank itself is the cause. Tank internal coating is typically priced at SAR 25–55 per m², and crack injection at SAR 40–115 per metre, so a clear picture of the affected area is the first step toward a sensible repair.

Taif is located at roughly 1673 metres above sea level, which shapes how a tank performs. At this altitude, the surrounding air is cooler and drier than in the coastal cities, and daily temperature swings can be noticeable. These swings cause concrete to expand and contract, which tends to open hairline cracks around joints and corners. Because of this, a repair in Taif should focus on flexible, well-bonded materials that can move with the structure. The same principle applies to the roof area above the tank, where liquid roof waterproofing at SAR 10–25 per m² or a bitumen membrane at SAR 15–35 per m² may be considered alongside the tank work, depending on the condition of the surface.

Before booking a visit, ask the provider to explain how they will locate the source of the leak and whether they will inspect the tank interior, the joints, and the roof surface above it. Request a written breakdown showing which parts of the job are priced per square metre and which per metre of crack, so you can compare costs against the ranges above. Ask what preparation you need to do, such as emptying the tank and clearing access, and how long the water supply will be affected. It is also reasonable to ask which materials they plan to use, whether the product suits the altitude and temperature changes in Taif, and what they will do if the first repair does not stop the leak.

For a whole building, a survey of the shared systems comes before unit-by-unit work.

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

The most common causes

• 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.

Quick comparison: facts and costs in Taif

Questions from Taif

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.