Water tank waterproofing for hotels & serviced apartments in Dhahran

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

What is specific about Dhahran for water tank waterproofing

The centre of Dhahran sits about 16 m above sea level (SRTM open elevation data). Dhahran is about 5.9 km from the sea coast (OpenStreetMap).

Team note on Dhahran: 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..

Does a water tank in a hotel or serviced apartment in Dhahran really need waterproofing, given how far it sits from the coast? The answer is yes. The centre of Dhahran sits about 16 m above sea level, and the city is about 5.9 km from the sea coast. Those facts do not remove the need for a sealed tank, because what matters for a building's water supply is that the tank holds water without leaking into the structure below or beside it. Owners of hotels and serviced apartments usually care most about avoiding damp in the rooms under the tank, keeping stored water clean, and protecting the roof slab that carries the weight.

A proper inspection starts with the tank's internal surfaces, where cracks, flaking coatings and wet patches are checked and marked. The inspector then looks at the joints, the corners and the connections to pipes, since these are the most common places for seepage to begin. Any active crack is recorded by its length in metres, because crack injection is priced per metre, and the surfaces are measured in square metres so that a clear scope can be set out. Where the tank lid or roof sits over occupied rooms, the surrounding roof area is also checked. The findings are then matched to suitable options, such as tank internal coating at SAR 25–60 per m², epoxy coating at SAR 35–90 per m², or liquid roof waterproofing at SAR 8–25 per m², so the owner can compare the scope before work begins.

Before the visit, the property owner should gather the building's plans, showing the tank's position and size, and note any past leaks, stains or repairs in the rooms below. It helps to have access arranged to the tank interior and the roof, and to make sure the water supply can be shut off while the inspector works. Note which rooms have had damp, and when it was first noticed, since this helps the inspector trace the source. Finally, prepare a rough idea of the area to be treated in square metres and any cracks already visible. With these details ready, the visit can focus on the tank itself and the owner receives a clear, itemised picture of what the repair involves.

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

Signs worth paying attention to

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

• Damaged old coating.
• Cracks in the walls or floor.
• Construction joints.

Tools and methods, and when we use them

The steps in order

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.

Dhahran in facts and sources

Common questions about water tank waterproofing in Dhahran

Common mistakes we see

• Using a material that is not intended for drinking water

The written outputs

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.