Basement & foundation waterproofing for duplexes in Rastanura

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

Before we start: what we know about Rastanura

Team note on Rastanura: 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.. Rastanura is about 0.2 km from the sea coast (OpenStreetMap).

Basement and foundation dampness is the most common problem we see in duplexes in Rastanura. Water tends to find its way through hairline cracks in the basement walls and slab, and through the joints where the foundation meets the ground. In a duplex, a leak in the lower unit often shows up as staining, peeling paint, or a musty smell that the upper household never sees, so the damage can build for a long time before anyone notices it.

Rastanura is about 0.2 km from the sea coast, which changes how we approach the job. Salt-laden moisture in the soil and air can attack concrete and finishes faster than in an inland area, so we look closely at the condition of the surfaces before recommending a system. Cracks are typically dealt with first using crack injection, priced at SAR 40–120 per metre, and the wider basement surface is then treated. Basement waterproofing is priced at SAR 50–150 per m², while epoxy coating at SAR 35–90 per m² and spray foam at SAR 20–45 per m² are options we weigh against the state of the wall. Where insulation is also needed, XPS boards at SAR 12–30 per m² may be part of the plan. Any bathroom or roof areas in the same building are quoted separately, at SAR 15–40 per m² for bathrooms and SAR 8–25 per m² for liquid roof waterproofing.

Before the visit, it helps to have a few details ready. Tell us which part of the duplex is affected, whether it is the basement, the foundation walls, or both, and describe when the dampness appears, such as after rain or all year. Note any visible cracks, paint bubbling, or white salt deposits on the walls. Let us know whether the building has a water tank, since tank internal coating at SAR 25–60 per m² is a separate item. Finally, ask us to confirm which pricing applies to your area and scope so you can compare the quote with a clear understanding of what is included.

In a duplex, the two floors often share lines, so tests are done floor by floor.

Signs worth paying attention to

The following signs are worth checking before they grow:

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

Where the problem usually comes from

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

Tools we use in Rastanura

From the first visit to the report

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.

Rastanura in facts and sources

Common questions about basement & foundation waterproofing in Rastanura

Mistakes that cost more

• Painting the basement wall while the water comes from outside

What you get after the work

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