Floor & balcony waterproofing for restaurants in Jubail

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

What is specific about Jubail for floor & balcony waterproofing

Jubail is about 0.9 km from the sea coast (OpenStreetMap). The centre of Jubail sits about 4 m above sea level (SRTM open elevation data).

Team note on Jubail: 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..

Jubail sits close to the Gulf coast, with the city centre about 4 m above sea level and roughly 0.9 km from the shoreline. For a restaurant owner, that combination means salt-laden air, humidity, and a low-lying water table that can push moisture up through slabs and walls. A service provider working here has to plan for the sea's influence on every surface, not just the obvious ones.

Those facts translate into practical decisions. Because the centre is only about 4 m above sea level, drainage around kitchen floors and any below-ground storage needs careful detailing, and costs for basement-type work in the SAR 50–150 per m² range reflect that added risk. The short distance to the coast means floors and balconies are exposed to salt and wind-driven moisture, which favours coatings such as epoxy at SAR 35–90 per m² in high-traffic kitchen and dining areas, and a liquid roof waterproofing layer at SAR 8–25 per m² for exposed terraces. Where cracks appear in slabs, crack injection at SAR 40–120 per metre stops water entering before it reaches finishes.

Owners commonly avoid several mistakes once they understand the setting. They do not skip the surface preparation that a coastal environment demands, because coatings fail quickly on damp or salt-contaminated concrete. They do not treat the balcony and the kitchen floor as the same job, since a spray foam at SAR 20–45 per m² or a bitumen membrane at SAR 15–35 per m² suits different conditions. They also avoid ignoring insulation below floors, where XPS boards at SAR 12–30 per m² can protect against moisture that rises from the ground. Planning around the local geography from the start keeps repairs and closures to a minimum.

For restaurants, visits are planned outside service hours and recorded for the premises file.

When do you need floor & balcony waterproofing?

If you notice one of these signs in Jubail, it is a good moment to talk to the team:

• A wrong fall towards the door threshold
• Water passing from the balcony to the floor below
• Damp under the light well

The most common causes

• Incorrect falls — we check this before anything else.
• A threshold without waterproofing — we check this before anything else.
• A blocked drain.

Tools and methods, and when we use them

From the first visit to the report

1. Checking the falls: Where water collects and where it should go.
2. Details: Thresholds, drains and upstands.
3. Waterproofing: The layer is applied and protected.
4. Flood test: Tested before the finish goes on.

Quick comparison: facts and costs in Jubail

Questions from Jubail

Common mistakes we see

• Tiling a balcony without waterproofing

The written outputs

You receive: the flood result and photos of the details, in a technical report with a verification code.