Bathroom waterproofing for offices & commercial complexes in Khobar

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

Before we start: what we know about Khobar

Khobar is about 1.8 km from the sea coast (OpenStreetMap). The centre of Khobar sits about 9 m above sea level (SRTM open elevation data).

Team note on Khobar: 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..

Bathroom waterproofing for offices and commercial complexes in Khobar starts with the site's position. The centre of Khobar sits about 9 m above sea level (SRTM open elevation data), and the city is about 1.8 km from the sea coast (OpenStreetMap). Because the ground is low and close to the coast, we check first how water moves through the slab, drains and wall junctions, and whether moisture is already present under floor finishes. Each bathroom is inspected for existing cracks, failed grout, and drainage slope before any price is discussed, since these are the points where water usually enters commercial washrooms.

Some checks depend on what the technician finds on the day, so they are left to the site visit. These include the condition of the existing screed, whether old membranes are still bonded, the state of the floor falls toward drains, and whether any water is rising from below. The area and length of each treatment are measured on site rather than estimated from plans. The technician also decides between a liquid system, a sheet membrane, or a combined approach once the substrate has been seen. Where a basement or water tank sits beneath or beside the washroom, that structure is assessed separately, because basement waterproofing is priced per m² at SAR 50–150 per m² and tank internal coating at SAR 25–60 per m², and the scope may change once those elements are confirmed.

For the technician's benefit, it helps to have the building drawings, the age of the bathroom finishes, and any record of previous leaks or repairs ready before the visit. Bathroom waterproofing is priced at SAR 15–40 per m², epoxy coating at SAR 35–90 per m², spray foam at SAR 25–35 per m², and crack injection at SAR 40–120 per m. Knowing which of these methods was used before, and where staining has appeared, lets the technician match the repair to the actual cause. Access to the floor below during inspection, and a clear window for the work so the washroom can stay out of use while materials cure, also make the visit more efficient.

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

Signs worth paying attention to

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

• Damp around the shower
• A stain under the bathroom on the floor below
• Worn grout

Causes we see in the field

• A damaged floor layer — we check this before anything else.
• Corners without waterproofing tape.
• The area around the floor drain.

How we choose the tool in Khobar

From the first visit to the report

1. Finding the source: A supply-pipe leak is ruled out first.
2. Preparation: The floor is opened and cleaned where needed.
3. Corners and details: Tape and detailing at corners, drains and pipe entries.
4. Flood test: The floor is tested before tiling.

Khobar in facts and sources

Questions from Khobar

Common mistakes we see

• Waterproofing the floor while the supply pipe still leaks

The written outputs

You receive: the flood-test result and photos of each stage, in a technical report with a verification code.