Basement & foundation waterproofing for restaurants in Aljumum

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

Before we start: what we know about Aljumum

The centre of Aljumum sits about 200 m above sea level (SRTM open elevation data). Team note on Aljumum: 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..

Water entering a restaurant basement most often comes through cracks in the lower walls and the joint where the floor slab meets the wall. Kitchens, cold rooms and dry stores below ground level cannot afford standing water, and a leak that is ignored for a few weeks can ruin stock, damage equipment and close a dining room for days. For this property type, the first job is usually to find and seal the active crack lines, then decide whether the whole basement needs a continuous membrane or only targeted repairs.

Aljumum sits at about 200 m above sea level, which matters for how water moves around a site. Ground in a raised area like this tends to drain outward, so rainwater runs toward the lower edges of a plot and pressure builds against any wall that sits below the surrounding grade. That is why we start with the wall and joint inspection rather than a surface coat. Crack injection is priced per metre, typically SAR 40–120 per m, and is often the most economical first step where leaks are isolated. Where dampness covers large wall areas, basement waterproofing is quoted per square metre at SAR 50–150 per m², and epoxy coating at SAR 35–90 per m² can serve interior faces that need a sealed, cleanable finish suited to a food area. Spray foam, at SAR 20–45 per m², is another option for filling irregular gaps.

Before the visit, ask the provider a few plain questions. Ask which areas they expect to inspect and whether they will check the wall-to-floor joint, the drainage outside the building and any adjoining bathrooms or storage tanks, since these can all feed moisture into the basement. Ask them to split the quote by method, so you can see the cost of crack injection, membrane work and coating separately. Confirm whether the work will be done in stages, so the kitchen can keep operating, and ask how long the area must stay closed. A clear written scope before anyone starts work protects both the restaurant and the contractor.

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

Signs worth paying attention to

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

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

Where the problem usually comes from

• Cracks at construction joints.
• Rainwater draining towards the foundation.
• A common cause: a high groundwater level.

How we choose the tool in Aljumum

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 — Aljumum

Questions from Aljumum

Mistakes that cost more

• Painting the basement wall while the water comes from outside

What you receive

You receive: the source, the treatment and the follow-up result, in a technical report with a verification code.