Basement & foundation waterproofing in Alzulfi: cost & published offers

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

Why basement & foundation waterproofing differs in Alzulfi

Main roads in or near Alzulfi: King Fahd Road, Sheikh Ibn Baz Square, King Salman Road. The centre of Alzulfi sits about 615 m above sea level (SRTM open elevation data).

Team note on Alzulfi: 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..

Before any quotation for basement and foundation waterproofing in Alzulfi, the technician checks the ground level the building sits on, because the centre of Alzulfi sits about 615 m above sea level (SRTM open elevation data). That altitude is a useful starting point for the site visit, since it frames how water moves across the plot and whether a basement is likely to collect it. The first checks are therefore the slope of the plot, the direction surface water would run, and whether the lowest floor sits below the outside ground. Basement waterproofing is priced at SAR 50–150 per m², so the area of wall and floor in contact with the earth is measured early, and the chosen system is matched to what the surfaces actually need.

Several points are left to the site visit, because they cannot be judged from a published sheet. The technician looks at the condition of existing walls, the presence of visible cracks, and the points where water appears. Crack injection is priced at SAR 40–120 per metre, so the total length of cracks found on the day drives that line of the estimate. Where a wet bathroom sits above the basement, bathroom waterproofing at SAR 15–40 per m² may be added, and the technician records its location. Rooftop water is handled separately: liquid roof waterproofing runs at SAR 8–25 per m², and bitumen membrane at SAR 15–35 per m². Choices between epoxy coating at SAR 35–90 per m², spray foam at SAR 20–45 per m², or XPS boards at SAR 12–30 per m² depend on the wall finish and access, so they are confirmed on site rather than assumed.

To help the technician, the homeowner or facilities manager should have the following ready: the plan of the basement with dimensions, the age of the building, any previous repair records, and the location of water tanks. Where a water tank is included, tank internal coating is priced at SAR 25–60 per m², so the tank's internal surface area should be noted. Photographs of damp patches taken after rain are especially useful, as are notes on when water appears. Clear information at the start lets the visit focus on the real problem and produces a estimate that reflects the actual work rather than a general allowance.

Prices shown on this page come from our own published price list for the city; the final price is set after inspection.

Signs worth paying attention to

These are the signs most often linked to basement & foundation waterproofing:

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

Causes we see in the field

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

How we choose the tool in Alzulfi

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 — Alzulfi

Questions from Alzulfi

Mistakes that cost more

• Painting the basement wall while the water comes from outside

The written outputs

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