Basement & foundation waterproofing for apartments in Alzulfi

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

Before we start: what we know about Alzulfi

Main roads in or near Alzulfi: King Fahd Road, Sheikh Ibn Baz Square, King Salman Road. The centre of Alzulfi sits about 615 m above sea level (SRTM open elevation data).

Team note on Alzulfi: 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..

Picture a family who owns a ground-floor apartment in a multi-storey block in Alzulfi, with a shared basement that holds storage and the building's water tanks. After a wet winter they notice damp patches on the lower walls, a faint smell, and a hairline crack running along one corner of the basement floor. They are not sure whether this is a minor surface issue or a sign that water is getting in from outside.

The centre of Alzulfi sits about 615 m above sea level, which means the town is in the highland belt where rainfall tends to run off the slopes and collect around lower structures. For a basement, that matters: ground water and surface runoff can press against the walls and find their way through cracks and cold joints. Because the basement is below ground, a crack that looks small can carry water steadily into the space. Owners should treat recurring damp as a structural question first and a cosmetic one second.

If you are dealing with a similar problem, work through it in this order. First, inspect the basement after rain and mark where water appears, noting cracks and the lowest wall lines. Second, decide which areas need attention: crack injection is priced per metre at SAR 40–120 per m, while basement waterproofing is priced per m² at SAR 50–150 per m², so measuring the affected length and area helps you compare quotes fairly. Third, treat the cracks before the wider surfaces, then consider membranes, epoxy coating at SAR 35–90 per m², or spray foam at SAR 20–45 per m² depending on the surface. Fourth, if the building has water tanks, check their internal coating separately, which is priced at SAR 25–60 per m². Finally, ask for a written scope that names each area and method so that you can follow up after the next rainy season.

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

Signs that call for basement & foundation waterproofing

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

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

The most common causes

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

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.

Facts and costs — Alzulfi

Common questions about basement & foundation waterproofing in Alzulfi

What we advise against

• 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.