Basement & foundation waterproofing for villas in Almajardah

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

Basement & foundation waterproofing in Almajardah: the local context

The centre of Almajardah sits about 2035 m above sea level (SRTM open elevation data). Team note on Almajardah: 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 material is chosen for a villa basement or foundation in Almajardah, the first thing to check is the elevation. The centre of Almajardah sits about 2035 m above sea level (SRTM open elevation data), which means the town sits high in the Asir highlands, where rainfall arrives in concentrated bursts and runs off sloped plots quickly. Water pressure against a basement wall often comes less from a standing water table than from surface runoff, so the technician looks first at how water moves across and around the plot, and only then at the wall itself.

Several points are left to the site visit, because they cannot be judged from a description. The technician will inspect the existing cracks, the condition of any earlier coating, the drainage fall around the villa, and whether the basement floor shows damp or staining. They will also decide which system suits each area: a crack injection is priced per metre, while a basement waterproofing scope is priced per square metre, so the measured length of cracking and the wall area both need to be confirmed on site. Where a bitumen membrane, an epoxy coating or spray foam is more appropriate depends on what the substrate can take and how it will be exposed, and that judgment is made in person rather than by phone.

To help the technician prepare, it is useful to have the basement plan and wall heights ready, along with any previous waterproofing invoices or warranties and a note of when damp first appeared. Tell them whether the basement is used as living space, storage or a plant room, and whether there is a water tank or a bathroom above it, since those change the approach. Clear access to the outside wall and the garden edge helps them see the drainage path. Indicative ranges are available for basement waterproofing at SAR 50–150 per m² and for crack injection at SAR 40–120 per metre, and the final figure will follow the inspection.

Villas often have several lines and tanks; we test them one at a time so the cause is clear.

Signs worth paying attention to

If you notice one of these signs in Almajardah, 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

Causes we see in the field

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

Tools and methods, and when we use them

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.

Quick comparison: facts and costs in Almajardah

Questions from Almajardah

Common mistakes we see

• 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.