Basement & foundation waterproofing for restaurants in Yanbu

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

Before we start: what we know about Yanbu

Yanbu is about 1.2 km from the sea coast (OpenStreetMap). The centre of Yanbu sits about 6 m above sea level (SRTM open elevation data).

Main roads in or near Yanbu: King Abdulaziz Road, Umluj Road, Al Hanan Street. Team note on Yanbu: 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..

Yanbu's city centre sits about 6 m above sea level, and the coast is roughly 1.2 km away, so a restaurant basement here is not in the same position as one built right on the shoreline. Before any quote is given, the first thing checked is the basement itself: the depth of the walls, the condition of the floor slab, and whether water is already entering through the walls or joints. Because the centre is elevated, a technician will look closely at how surface run-off and nearby ground water move toward the lower level, rather than assuming the seaside pattern applies. Basement waterproofing is priced at SAR 50–150 per m², and the choice between options such as epoxy coating (SAR 35–90 per m²), spray foam (SAR 20–45 per m²), and crack injection (SAR 40–120 per metre) depends on what the first inspection reveals.

Several things can only be settled on the site visit. The technician needs to see the actual cracks, measure the exposed wall area, and judge whether the damage is a single line of leakage or spread across the surface. The state of the existing drainage, the age of any old coating, and whether a kitchen grease trap or service pipe runs close to the wall will also decide the method. Restaurant basements often carry heavy equipment and stored stock, so access, timing, and how long the space can be closed to staff will shape the plan. Bathroom-style waterproofing (SAR 15–40 per m²) and liquid roof systems (SAR 8–25 per m²) are not substitutes for a basement wall, so the visit should confirm which surfaces truly belong to the basement scope.

To help the technician prepare, have the restaurant's floor plan ready with the basement outline marked, and note any place where water has been seen, including the season and the rough volume. Photos taken after rain are especially useful. Share the access route for materials, the hours the kitchen can tolerate noise, and any stored items that must be moved. If a bitumen membrane (SAR 15–35 per m²) or XPS boards (SAR 12–30 per m²) was used in the past, say so, since it changes what has to be removed. Clear information at this stage lets the work be scoped accurately and keeps the restaurant running with the least disruption.

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

When do you need basement & foundation waterproofing?

The following signs are worth checking before they grow:

• Salt marks at the bottom of the walls
• Damp basement walls
• Water seeping in after rain

Where the problem usually comes from

• A high groundwater level — we check this before anything else.
• Rainwater draining towards the foundation.
• A common cause: cracks at construction joints.

Tools and methods, and when we use them

How the work is done, step by step

1. Finding the source: Groundwater, rain or a pipe — each needs a different treatment.
2. Preparation: Surfaces are cleaned and opened where needed.
3. Injection: Active cracks are injected.
4. Waterproofing layers: The system is applied on the right side of the wall where possible.
5. Follow-up: Readings are repeated after the treatment.

Quick comparison: facts and costs in Yanbu

Short answers for Yanbu

What we advise against

• Painting the basement wall while the water comes from outside

The written outputs

The written output: the source, the treatment and the follow-up result. The report is numbered and can be checked with its verification code.