Basement & foundation waterproofing for residential buildings in Sharurah

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

Why basement & foundation waterproofing differs in Sharurah

Main roads in or near Sharurah: King Abdulaziz Road, King Fahd Road. The centre of Sharurah sits about 724 m above sea level (SRTM open elevation data).

Team note on Sharurah: 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..

The most common problem with basement and foundation waterproofing in residential buildings is water pressing against the lower walls and floor slab, which shows up as damp patches, efflorescence and hairline cracks. Because the basement sits below ground, every wall in contact with soil has to resist moisture that builds up around it, so a surface-only fix rarely lasts. Crack injection is often the first repair considered, and its cost is set at SAR 40–120 per m, but cracks are only one route for water. A proper assessment checks the whole wall-and-slab junction, since a leak at one point can be feeding damp across a much wider area.

Sharurah sits at about 724 m above sea level, which shapes how the work is planned. At this elevation the surrounding ground and the wider region can carry significant seasonal rainfall that drains toward buildings, so the approach focuses on keeping water away from the foundation as well as sealing the structure itself. This makes the choice of system more than a question of price per square metre. Options such as epoxy coating at SAR 35–90 per m², spray foam at SAR 20–45 per m², bitumen membrane at SAR 15–35 per m² and XPS boards at SAR 12–30 per m² each behave differently against pressure and movement, so the right match depends on how the basement is exposed and used. Where a basement also holds a water tank, tank internal coating at SAR 25–60 per m² is a separate job that should be quoted and planned on its own.

Before the visit, ask the provider to explain how they will locate the source of water rather than only treating the visible damp, and whether they will survey the walls and floor together. Request a written breakdown that shows the rate for each part of the work, such as basement waterproofing at SAR 50–150 per m² and any crack injection at SAR 40–120 per m, so you can compare quotes on equal terms. Ask how the chosen system will handle the local rainfall pattern at this altitude and what preparation you need to make, such as clearing stored items and access to the outside of the walls. A clear, specific answer to these questions is a good sign of how carefully the job will be handled.

For a residential building, shared risers, tanks and pumps are checked as one system.

Signs worth paying attention to

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

Where the problem usually comes from

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

How we choose the tool in Sharurah

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.

Facts and costs — Sharurah

Short answers for Sharurah

Mistakes that cost more

• 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.