Water tank waterproofing for residential buildings in Yanbu

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

Water tank waterproofing in Yanbu: the local context

Main roads in or near Yanbu: King Abdulaziz Road, Umluj Road, Al Hanan Street. Team note on Yanbu: 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..

Yanbu is about 1.2 km from the sea coast (OpenStreetMap). The centre of Yanbu sits about 6 m above sea level (SRTM open elevation data).

Does a water tank in a Yanbu apartment block really need waterproofing, given that the city is so close to the sea? The answer is yes, and the local geography explains why. The centre of Yanbu sits about 6 m above sea level, and the coast is only about 1.2 km away. Buildings here face salt-laden air and a shallow water table, so the tank is exposed to moisture from several directions. A tank that leaks slowly can damage the structure below and waste water that residents pay for, so checking the lining and coating early is a sensible habit for any owner.

Our inspection for a residential water tank follows a clear order. First, the technician empties the tank and examines the internal surface for cracks, flaking paint, and damp patches, noting every area where the lining has broken down. Next, the joints, corners, and inlet and outlet points are checked, since these are the most common routes for seepage. Where cracks are active, the team measures their length so the repair can be priced by the metre, with crack injection costing SAR 40–120 per metre. Finally, the surrounding slab and wall are inspected for signs of moisture migration. The findings are then set out as a list of options, each with its own price per square metre, so the owner can compare coating, membrane, and crack repair work before any decision is made.

Before the visit, the owner should empty the tank as far as practical and make sure the access hatch and ladder are clear and safe to use. Please note the building's water supply arrangements, including any isolating valves, and tell us whether the tank has been coated before, along with the date and the product used if known. Clear access to the roof or plant room will also save time. Having these details ready lets the inspection focus on the tank itself and gives the owner a clear, prioritised picture of what needs attention and what it is likely to cost.

For a whole building, a survey of the shared systems comes before unit-by-unit work.

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

The most common causes

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

How we choose the tool in Yanbu

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 — Yanbu

Questions from Yanbu

Mistakes that cost more

• 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.