Water tank waterproofing in Al Yrmwk, Riyadh: cost & published offers

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

Water tank waterproofing in Al Yrmwk: the local context

The centre of Al Yrmwk is at 24.8085, 46.7835, about 15.2 km from the centre of Riyadh, with an approximate radius of 3.2 km. The service-area circle on the map below is drawn from this point. Main roads in or near Al Yrmwk: Dammam Road, Sheikh Jaber Al-Ahmad Al-Sabah Road, Imam Abdullah bin Saud bin Abdulaziz Road.

The centre of Al Yrmwk sits about 598 m above sea level (SRTM open elevation data).

Consider a typical homeowner in Al Yrmwk who notices damp patches on a rooftop water tank room or a leak around the tank base. They want to know what repair should cost before calling anyone, and they want to avoid paying for work that does not fit their problem. Al Yrmwk sits in Riyadh, about 15.2 km from the centre of the city, with an approximate radius of 3.2 km, so most homes here are a reasonable drive from the main commercial areas, which can affect how quickly a contractor can return for follow-up visits. The area is also elevated, with its centre about 598 m above sea level, so owners should expect sun and heat to work hard on exposed rooftop tanks and their coatings over time.

For an owner in this situation, these local facts mean the price depends mainly on the surface being treated and its area or length. Tank internal coating is priced at SAR 25–65 per m², while liquid roof waterproofing is SAR 10–25 per m², so a tank leak and a roof leak call for quite different budgets. Crack injection is charged per metre at SAR 40–125 per m, which suits a small, localised split more than a full re-coat. Because the site is a distance from central Riyadh, asking for a clear quote that lists each surface and its unit rate helps avoid surprises once the crew is on site.

Practical steps start with measuring. Note the tank's internal surface area and the roof area that drains toward the leak, and mark any visible cracks with their length. Next, confirm where the water is actually coming from, since a damp ceiling below a tank may come from the tank walls, the roof membrane or a crack, and each needs a different treatment. Then request written quotes that state the unit rate, the measured area or length and the surface type, and compare them against the published ranges above. Finally, ask the contractor to explain which method they recommend and why, and confirm the work plan before any materials are ordered.

Prices shown on this page come from our own published price list for the city; the final price is set after inspection.

Signs that call for water tank waterproofing

The following signs are worth checking before they grow:

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

Causes we see in the field

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

Tools we use in Al Yrmwk

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 Al Yrmwk

Questions from Al Yrmwk

Mistakes that cost more

• 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.