Water tank waterproofing for warehouses in Qatif

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

Why water tank waterproofing differs in Qatif

The centre of Qatif sits about 5 m above sea level (SRTM open elevation data). Qatif is about 2.5 km from the sea coast (OpenStreetMap).

Team note on Qatif: 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..

Water tank waterproofing for warehouses in Qatif usually begins with a familiar problem: the tank and the roof slab it sits on are often damaged by seepage at joints, cracks and the junction where the tank wall meets the base. In a warehouse setting, a leaking tank can soak stored goods, corrode metal fittings and undermine the floor, so the first job is to find where the water is actually getting through before any coating is chosen.

Qatif's location shapes the approach. The centre of the city sits about 5 m above sea level, and the town lies roughly 2.5 km from the coast, which means the surrounding ground and air carry salt and moisture that can work into concrete over time. For a tank, this favours coatings that bond well to damp, salt-exposed surfaces and that can handle the movement of a large structure in warm conditions. Internal tank coating is usually priced at SAR 25–60 per m², and an epoxy coating, at SAR 35–90 per m², is often considered where a smooth, durable and easy-to-clean finish is needed. Where cracks are present, crack injection is charged at SAR 40–120 per metre, so sealing them before any surface coat is normally part of the plan. For the roof area above the tank, liquid roof waterproofing at SAR 8–25 per m² and bitumen membrane at SAR 15–35 per m² are common options.

Before the visit, ask the provider to confirm the tank's size, its age, whether it is above or below ground, and what the tank currently holds. Ask whether they will inspect for leaks and cracks first and explain what they find, and request a breakdown of the work by area and by method, including any crack injection measured in metres. Check how the surface will be prepared and what the coating system is, and ask how long the tank must stay empty during the work. Clear answers to these questions will make it easier to compare quotes fairly.

For warehouses, work is phased around operations and stored goods.

Signs worth paying attention to

The following signs are worth checking before they grow:

• 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

• A common cause: damaged old coating.
• A common cause: cracks in the walls or floor.
• Construction joints.

How we choose the tool in Qatif

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 — Qatif

Short answers for Qatif

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.