Water tank waterproofing for duplexes in Sabya

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

What is specific about Sabya for water tank waterproofing

Main roads in or near Sabya: King Fahd Road, King Abdulaziz Road, King Abdullah bin Abdulaziz Road. Team note on Sabya: 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..

Sabya is about 16.7 km from the sea coast (OpenStreetMap). The centre of Sabya sits about 40 m above sea level (SRTM open elevation data).

Sabya sits about 40 m above sea level, and its centre is roughly 16.7 km from the sea coast. For a water tank on a duplex roof or yard, this means the town is inland and fairly elevated, so the service is shaped by a dry, hot environment rather than by coastal salt air. Owners here see more heat-driven expansion and contraction than damp, so the waterproofing system has to tolerate movement, not just resist water.

Those two facts shape how we approach each job. Because the site is inland, we focus first on surface preparation and on how the coating bonds to concrete that has been baked by the sun. Because the ground is elevated, tank supports and drainage around the base are checked as part of the work, since water that runs off quickly needs a clear path away from the structure. Tank internal coating is priced at SAR 25–60 per m², and the exact figure depends on the surface area and condition of the tank walls and floor, which we measure on site before quoting anything.

Owners in Sabya commonly make a few errors that we help them avoid. The first is painting over a dirty or dusty tank, which stops the new layer from bonding and causes early peeling. The second is delaying repairs to small cracks; crack injection, priced at SAR 40–120 per metre, is far cheaper than repairing a leak that has already damaged the tank contents and the ceiling below. The third is choosing a cheap roof treatment without checking the membrane type, since liquid roof waterproofing at SAR 8–25 per m² and bitumen membrane at SAR 15–35 per m² suit different roof conditions. We walk through these options before any work starts.

In a duplex, the two floors often share lines, so tests are done floor by floor.

Signs worth paying attention to

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

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

Causes we see in the field

• Construction joints.
• Cracks in the walls or floor.
• Damaged old coating — we check this before anything else.

Tools we use in Sabya

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.

Facts and costs — Sabya

Short answers for Sabya

What we advise against

• Using a material that is not intended for drinking water

What you receive

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