Water tank waterproofing for schools in Ahad Rafida

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

Why water tank waterproofing differs in Ahad Rafida

Team note on Ahad Rafida: 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.. Main roads in or near Ahad Rafida: King Khalid Road.

The centre of Ahad Rafida sits about 2055 m above sea level (SRTM open elevation data).

Picture the facilities manager of a school in Ahad Rafida who notices a faint damp line creeping up the inside wall of the storage water tank room, or who finds a dark stain spreading across a ceiling below the roof. Schools are busy places, and any interruption to water supply or any leak near classrooms quickly becomes a problem for staff, students and parents. For an owner responsible for several buildings, the question is rarely whether waterproofing is needed, but when, where and at what cost.

The local facts matter here. The centre of Ahad Rafida sits about 2055 m above sea level, which is a useful reminder that the area is elevated and that rainfall and temperature swings can stress roofs and tanks differently from lower-lying sites. For a school water tank, the internal coating is typically priced between SAR 25 and SAR 60 per m², while liquid roof waterproofing ranges from SAR 8 to SAR 25 per m². Crack injection, which is often the first repair for a leaking tank wall or slab, costs between SAR 40 and SAR 120 per metre. Knowing these ranges helps the owner compare quotes and decide whether a small repair will do or whether a full re-coating is the sounder investment.

A practical sequence begins with a written inspection of the tank, roof and any basement or bathroom areas connected to the water system, noting every crack, stain and blistered surface. Next, prioritise repairs: seal visible cracks by injection where the defect is linear, then clean and prepare the surface before applying the chosen system, such as epoxy coating or a tank internal coating. Where the roof is exposed, consider liquid roof waterproofing or a bitumen membrane, and where insulation is part of the upgrade, XPS boards can be included. Finally, schedule the work outside teaching hours, confirm that the tank can be drained and refilled safely, and keep the inspection record so that the next check can be compared with this one.

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

Signs worth paying attention to

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

Tools we use in Ahad Rafida

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.

Ahad Rafida in facts and sources

Short answers for Ahad Rafida

Mistakes that cost more

• Using a material that is not intended for drinking water

What you receive

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.