Basement & foundation waterproofing in Alnabhaniyah: for companies (annual contract)

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

Basement & foundation waterproofing in Alnabhaniyah: the local context

The centre of Alnabhaniyah sits about 665 m above sea level (SRTM open elevation data).

Is my basement at risk of seepage, and what will it cost to fix? In Alnabhaniyah, which sits about 665 m above sea level according to SRTM open elevation data, the first step is understanding what the work involves and what it typically costs. Basement waterproofing is priced at SAR 50–150 per m², while crack injection is priced at SAR 40–120 per metre. Other options include epoxy coating at SAR 35–90 per m², spray foam at SAR 20–45 per m², and a bitumen membrane at SAR 15–35 per m². The right choice depends on where the water is coming in and how much of the structure is affected.

Before any work is quoted, the inspection looks at the basement walls, floor, and joints to locate active leaks, damp patches, and cracks. The technician will note the length of each crack, since crack injection is measured per metre, and the surface area of the affected walls and floor, since most coatings and membranes are measured per m². Where a tank or adjacent wet area is part of the problem, the same process applies: tank internal coating is priced at SAR 25–60 per m², and bathroom waterproofing at SAR 15–40 per m². The inspection also checks whether the water is rising from below or entering sideways, because that determines whether a surface treatment, an injected seal, or a membrane is the better fit.

To make the visit efficient, clear the basement of stored items so the walls and floor are fully accessible, and move anything that blocks the edges of the walls. Note when you have seen water, such as after rain or during dry periods, and where it appears. Have any previous repair records or plans available, and make sure someone who knows the building can open access points. Measure the approximate wall and floor area and the length of visible cracks beforehand if you can, so the quote can be matched to the figures above. With these details ready, the assessment can move quickly to a clear recommendation.

For companies, an annual contract sets the scope, the visit schedule and the reports in writing.

When do you need basement & foundation waterproofing?

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

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

Causes we see in the field

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

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 — Alnabhaniyah

Short answers for Alnabhaniyah

Mistakes that cost more

• Painting the basement wall while the water comes from outside

What you receive

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