Water tank waterproofing for rest houses & farms in Riyadh

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

What is specific about Riyadh for water tank waterproofing

Team note on Riyadh: 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 Riyadh sits about 637 m above sea level (SRTM open elevation data).

Main roads in or near Riyadh: King Fahd Road, King Abdullah Road, King Abdullah.

Before any coating goes on a water tank at a rest house or farm in Riyadh, the technician starts by confirming the tank's basic condition and its position on the site. The centre of Riyadh sits about 637 m above sea level (SRTM open elevation data), so tanks here are usually filled from ground pumps and sit in strong, dry sun for most of the year. That combination of heat and wide temperature swings is hard on coatings, which is why the first check is whether the surface is sound, dry enough to accept a coat, and free of old loose paint or salt bloom. Cracks and joints are noted at this stage because they decide whether a simple surface treatment is enough or whether crack injection is needed, which is priced at SAR 40–125 per metre. Tank internal coating is usually quoted at SAR 25–65 per m², while epoxy coating sits at SAR 35–95 per m², so the choice of system depends on what the tank holds and how it is used.

Several things are left to the site visit because they cannot be judged from a description. The technician needs to see the tank's access, whether the lid and inlet are sealed, and how the tank is supported on its base or roof. Surfaces that will be exposed to sun, such as the top of the tank or a roof slab, may need liquid roof waterproofing at SAR 10–25 per m² or a bitumen membrane at SAR 15–35 per m², and that decision depends on the slope, drainage and any shading on the roof. Where insulation is wanted on a tank cover or an adjacent wall, XPS boards at SAR 15–30 per m² can be considered. Spray foam, priced at SAR 20–45 per m², may suit awkward shapes. The final choice is made on site, after measuring the real area and looking at the condition of each surface.

To help the technician prepare, it is useful to know the tank's material, approximate size, how long it has been in service, and whether it has held drinking water or only water for irrigation or general use. Photos of the cracks, staining and the roof area, and a note of any previous repairs, make the visit quicker and the quote more accurate. Basement waterproofing, which costs SAR 55–160 per m², and bathroom waterproofing, at SAR 15–40 per m², are separate services and should be listed on their own if they are also needed at the rest house or farm.

Rest houses and farms often have long buried lines, tanks and irrigation that need separate tests.

Signs worth paying attention to

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

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

Causes we see in the field

• Construction joints.
• Damaged old coating.
• Cracks in the walls or floor.

Tools we use in Riyadh

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.

Riyadh in facts and sources

Common questions about water tank waterproofing in Riyadh

Mistakes that cost more

• Using a material that is not intended for drinking water

What you get after the work

You receive: the material name, its batch number and the fill-test result, in a technical report with a verification code.