Basement & foundation waterproofing for hotels & serviced apartments 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..

Basement and foundation leaks are the most common problem in hotel and serviced-apartment basements, usually showing up as damp patches on walls, efflorescence on concrete, and water seeping through cracks at the wall-floor joint. In a building that hosts guests every night, even a small leak can ruin finishes, create odours, and force costly room or corridor closures. The repair plan should start with finding where the water is entering, not just covering the damp surface.

Yanbu's location shapes that plan. The centre of Yanbu sits about 6 m above sea level, and the city is about 1.2 km from the sea coast, so the ground is close to the water table and salt-laden air is present. Salts can drive efflorescence and break down coatings from the inside, so surface preparation and the choice of system matter more here than in an inland city. Pricing for basement waterproofing typically falls in the range of SAR 50–150 per m², while crack injection is priced separately at SAR 40–120 per metre, and epoxy coating at SAR 35–90 per m², so the scope of work should be set out clearly from the start. Where internal wall surfaces are involved, XPS boards at SAR 12–30 per m² may be considered as part of a drainage-aware solution.

Before the site visit, ask the provider which system they propose for the basement walls and floor, and why it suits a coastal-influenced site close to the water table. Ask how they will locate the source of the leak and whether crack injection is included in the quote. Request an itemised breakdown by square metre and by linear metre so you can compare figures against the ranges above. Confirm how they will prepare surfaces to deal with salts, how they will protect hotel operations during work, and whether the scope covers related areas such as bathrooms or tanks, each priced on its own basis.

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

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

Causes we see in the field

• A common cause: a high groundwater level.
• 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.

Facts and costs — 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.