Water tank waterproofing for schools in Taif

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

Why water tank waterproofing differs in Taif

The centre of Taif sits about 1673 m above sea level (SRTM open elevation data). 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 most common problem with water tanks serving schools in Taif is slow seepage through the tank walls and floor, usually at cracks and joints, which goes unnoticed until pump run times climb or staff start reporting damp patches near the base. Schools feel this more than most buildings, because a tank that fails during term time can disrupt washrooms, kitchens and sports facilities for days. Our first step for school tanks is therefore an inspection of the interior, looking for hairline cracks, flaking render and stains at the waterline, before recommending any coating.

Taif changes the approach in a practical way. The centre of Taif sits about 1673 m above sea level, which means the city experiences cooler nights and a different temperature range from the coastal cities many people compare it with. Temperature swings put stress on concrete and render, so surface movement tends to open cracks over time. For that reason we pay close attention to crack injection before applying a full coating. Tank internal coating is typically priced between SAR 25 and SAR 55 per m², and epoxy coating between SAR 35 and SAR 85 per m², so the choice between them depends on the condition of the substrate and how much movement the tank has shown. Where cracks are present, crack injection at SAR 40 to SAR 115 per metre is usually the first treatment, followed by the coating system that suits the surface.

Before the visit, it helps to have a few details ready. Tell us the tank's approximate capacity, whether it is above ground, below ground or on the roof, and whether it has been drained and cleaned recently. Mention any visible leaks, damp spots in nearby rooms, or changes in how often the pump runs. Let us know whether the school can schedule a shutdown, because the tank must be empty for inspection and coating. Finally, ask for a written scope that lists each treatment and its rate per unit, so the school can compare the proposal with the actual area that needs work.

For schools, the larger jobs are planned for weekends and holidays.

Signs that call for water tank waterproofing

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

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

The most common causes

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

Tools we use in Taif

How the work is done, step by step

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

Common questions about water tank waterproofing in Taif

Mistakes that cost more

• Using a material that is not intended for drinking water

What you get after the work

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.