Water tank waterproofing for hotels & serviced apartments in Qatif

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

Before we start: what we know about 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..

Start with the location, because it shapes the first checks. The centre of Qatif sits about 5 m above sea level, and the town is about 2.5 km from the sea coast. Both facts matter for a water tank in a hotel or serviced apartment building. A site this close to the coast and this low-lying can see salt-laden air and a shallow water table, so the technician looks first at the tank's outer walls, base and any sign of moisture creeping in from below before deciding anything else. Staff should expect this check to come before the discussion of coatings or materials.

Several things are left to the site visit, because they depend on what is physically in front of the technician. The state of the internal tank surface, the presence and width of cracks, whether an old membrane is lifting, and how the tank connects to the roof and bathroom plumbing all need to be seen in person. The technician will also confirm the tank's accessibility, the water level during inspection, and whether the building can be drained safely for the work. Price ranges for the common options are a starting point only, since the final scope depends entirely on the measured area and condition. Basement work, for example, is priced at SAR 50–150 per m², while tank internal coating is SAR 25–60 per m², so the real figure is set only after measuring.

To help the technician arrive prepared, have the following ready: the tank's dimensions and capacity, the age of the building, any previous waterproofing records, and a note of any leaks or damp patches reported by guests or staff. Photos of the tank interior and the roof above it are useful, as is the location of the access hatch. Tell the technician whether the hotel or apartments can be offline for a period, since the tank must be empty and dry before coating begins. For cracks, mark their approximate length so that crack injection, priced at SAR 40–120 per metre, can be estimated accurately. The more precise the information at the start, the fewer surprises when the work begins.

For hotels and serviced apartments, rooms are handled in batches to keep units available.

When do you need water tank waterproofing?

These are the signs most often linked to water tank waterproofing:

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

Tools we use in Qatif

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.

Qatif in facts and sources

Short answers for Qatif

What we advise against

• 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.