Floor & balcony waterproofing for offices & commercial complexes in Jubail

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

Floor & balcony waterproofing in Jubail: the local context

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.. The centre of Jubail sits about 4 m above sea level (SRTM open elevation data).

Jubail is about 0.9 km from the sea coast (OpenStreetMap).

Does a commercial floor or balcony in Jubail really need a waterproofing check, or can it wait until a leak shows up? In a coastal city the answer leans toward checking early. The centre of Jubail sits about 4 m above sea level, and the town is about 0.9 km from the sea coast, so salt-laden air and the damp that comes with it are part of daily life for offices and commercial complexes. Water that reaches a slab or balcony edge can travel into finishes and fixtures long before the damage is visible from the floor below.

Our inspection starts with a walk of the affected floor or balcony to map where water is entering or pooling. The technician checks cracks and joints, and where a crack is found the repair is priced per metre, typically SAR 40–120 per m, using crack injection. Surfaces are then assessed to choose a suitable system. For wide areas, options include liquid roof waterproofing at SAR 8–25 per m², bitumen membrane at SAR 15–35 per m², and spray foam at SAR 20–45 per m². Floors that take heavy traffic may be better suited to epoxy coating at SAR 35–90 per m². Each option is explained against the surface and how the space is used, so the choice matches the building rather than a generic template.

Before the visit, gather the building's layout drawings, the floor or balcony areas in square metres, and a note of where leaks, stains or blistered paint have appeared, including any that show up after rain. Mark the access points and tell us which days the floor can be cleared of furniture and equipment. If the space has a basement or water tank, list those too, since basement waterproofing is quoted at SAR 50–150 per m² and tank internal coating at SAR 25–60 per m², and they are assessed separately. Clear information at this stage lets the inspection focus on the problem areas and gives you a realistic scope to compare.

For offices and commercial complexes, work is scheduled to avoid disrupting staff and visitors.

When do you need floor & balcony waterproofing?

The following signs are worth checking before they grow:

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

Where the problem usually comes from

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

How we choose the tool in Jubail

The steps in order

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.

Jubail in facts and sources

Short answers for Jubail

Common mistakes we see

• Tiling a balcony without waterproofing

The written outputs

The written output: the flood result and photos of the details. The report is numbered and can be checked with its verification code.