Water tank waterproofing for offices & commercial complexes in Riyadh

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

Why water tank waterproofing differs in Riyadh

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

The centre of Riyadh sits about 637 m above sea level (SRTM open elevation data).

The most common problem with water tank waterproofing in offices and commercial complexes is slow seepage through the tank walls and floor, usually at construction joints, pipe penetrations and hairline cracks that develop as concrete cures and settles. Because commercial tanks hold large volumes and feed multiple floors, a leak that looks minor can quietly drain supply, stain ceilings in the building below and push up water bills before anyone links the damage to the tank. For this property type, the first step is usually an inspection of the internal surfaces when the tank is drained, followed by a plan that treats cracks and joints before any broad coating is applied.

Local conditions shape that plan. The centre of Riyadh sits about 637 m above sea level, and the dry, high-temperature climate means concrete and coatings are exposed to strong sun and wide daily temperature swings. Those swings can open small cracks and stress older coatings, so the approach favours materials that stay flexible and bond well to concrete. For internal tank surfaces, tank internal coating is typically priced at SAR 25–65 per m², while epoxy coating is priced at SAR 35–95 per m² where a harder, more durable finish is needed. Crack injection, priced at SAR 40–125 per metre, is often added where specific cracks need sealing before the surface is coated. Where the tank sits partly below ground, basement waterproofing at SAR 55–160 per m² may also be relevant.

Before the visit, ask the provider how they will confirm the source of the leak and whether they will drain the tank for a full internal inspection. Request a written breakdown that separates crack injection, surface coating and any roof or basement work, so each cost can be compared against the per-unit ranges above. Ask which products they plan to use and how those products handle high summer temperatures. Check whether they will need the tank out of service and for how long, since commercial tenants depend on steady supply. Finally, ask who will manage access, safety and waste disposal on your site, and confirm that all of this is agreed in writing before work starts.

For offices and commercial complexes, work is scheduled to avoid disrupting staff and visitors.

When do you need water tank waterproofing?

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

Causes we see in the field

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

How we choose the tool 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.

Facts and costs — Riyadh

Questions from Riyadh

Common mistakes we see

• 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.