Water tank waterproofing for rest houses & farms in Al Wzarat, Riyadh

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

Before we start: what we know about Al Wzarat

The centre of Al Wzarat is at 24.6769, 46.7135, about 5.6 km from the centre of Riyadh, with an approximate radius of 1.6 km. The service-area circle on the map below is drawn from this point. The centre of Al Wzarat sits about 602 m above sea level (SRTM open elevation data).

Main roads in or near Al Wzarat: Makkah Road, King Saud Road, Prince Abdulaziz bin Musaed bin Jalawi Road.

Water tank waterproofing for rest houses and farms in Al Wzarat starts with the basics of location and elevation. The centre of Al Wzarat sits at 24.6769, 46.7135, about 5.6 km from the centre of Riyadh, with an approximate radius of 1.6 km. It also sits about 602 m above sea level, which is a useful reference when a technician plans how a tank is filled, drained and kept sealed on a site that is not flat ground. Because many rest houses and farms here are set back from the main roads, the first check is simply where the tank stands, how it is reached, and whether its surrounding slab drains away from the walls.

What is left to the site visit is the part that cannot be judged from a distance. The technician needs to see the actual condition of the tank walls, floor, and any cracks, and to confirm whether the existing lining is failing or simply aged. Pricing for tank internal coating is commonly given per square metre within a range of SAR 25–65 per m², while crack injection is priced per metre within SAR 40–125 per m, so the true scope depends on measurements taken on the spot. The technician will also check the roof, since liquid roof waterproofing is priced at SAR 10–25 per m² and bitumen membrane at SAR 15–35 per m², and decide which method suits the surface. Access, ventilation and whether the tank can be emptied safely are also judged at the visit.

For the technician, the useful information is a clear record of the tank dimensions, the surfaces to be treated, and the likely materials. Epoxy coating falls within SAR 35–95 per m², spray foam within SAR 20–45 per m², and XPS boards within SAR 15–30 per m², so noting which surfaces need which system helps the estimate stay accurate. Recording the tank's altitude and location at the first visit also helps with planning deliveries and crew travel from the Riyadh area. Photographs of cracks, stains and the roof edge, with a note of the water source, give the technician a sound starting point before any work begins.

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

Signs worth paying attention to

If you notice one of these signs in Al Wzarat, it is a good moment to talk to the team:

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

Causes we see in the field

• Damaged old coating.
• Cracks in the walls or floor.
• A common cause: construction joints.

Tools we use in Al Wzarat

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 Al Wzarat

Short answers for Al Wzarat

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.