Basement & foundation waterproofing for apartments in Alnuayriyah

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

Before we start: what we know about Alnuayriyah

The centre of Alnuayriyah sits about 49 m above sea level (SRTM open elevation data). Main roads in or near Alnuayriyah: King Abdulaziz Road.

Team note on Alnuayriyah: 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..

Why does my apartment basement smell damp after rain, and what can be done about it? In Alnuayriyah, a basement or ground-floor foundation wall that sits below ground level can take in water from surrounding soil, and the answer usually lies in finding where that water enters before choosing a treatment. The centre of Alnuayriyah sits about 49 m above sea level, which is a useful reference point when you describe your site to a technician, but the real question is how the water is reaching your walls, floor and joints. Options on our list include basement waterproofing at SAR 50–150 per m², epoxy coating at SAR 35–90 per m², crack injection at SAR 40–120 per metre, and XPS boards at SAR 12–30 per m². Each one suits a different cause of damp, so the right choice depends on what the inspection shows.

The inspection starts with a walk through the basement or foundation area to look for staining, efflorescence, flaking paint and visible cracks. The technician measures the affected wall and floor areas in square metres and marks any cracks, recording their length in metres so the work can be priced line by line. Bathroom and roof areas connected to the same problem are checked as well, since water often travels from a leaking bathroom or roof drain into the structure below. The team then identifies which method fits: spray foam at SAR 20–45 per m² for certain surfaces, a bitumen membrane at SAR 15–35 per m², or a combination. Nothing is recommended until the source is confirmed, which keeps the scope focused on what your building actually needs.

To make the visit productive, prepare a clear route to the basement and any storage areas so the technician can reach every wall without moving belongings. Note when the dampness appears, for example after heavy rain or only during certain seasons, because this timing points to the source. Clear the floor along the affected walls if you can, and gather any previous repair records or invoices for earlier work. If your building has a water tank, have access to it ready, since tank internal coating at SAR 25–60 per m² is sometimes needed when the same moisture problem involves stored water. Having these details ready lets the visit move quickly and gives you a firm, measured estimate.

In an apartment, a problem may start in your unit or in a shared line; we separate the two before any work.

When do you need basement & foundation waterproofing?

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

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

Where the problem usually comes from

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

How we choose the tool in Alnuayriyah

The steps in order

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 — Alnuayriyah

Short answers for Alnuayriyah

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.