Basement & foundation waterproofing for villas in Afif

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

What is specific about Afif for basement & foundation waterproofing

Team note on Afif: 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 centre of Afif sits about 1040 m above sea level (SRTM open elevation data).

Main roads in or near Afif: King Abdulaziz Road, King Faisal Road, Airport Road.

Picture a villa owner in Afif who has finished a basement for storage or a family room. After the first heavy rain, a damp patch appears on the lower wall, and a faint smell of moisture follows. They want the problem fixed properly rather than hidden behind paint, but they are unsure where the water is coming from or what the work should cost.

Afif sits at about 1040 m above sea level, which matters for anyone planning below-ground work. Sites at this height often have ground that drains quickly on the surface, yet the soil around a basement can still hold water and press against the walls after rain. For a villa owner, this means a basement wall and floor must be treated as a structure exposed to moisture from outside as well as inside. A waterproofing plan should address the whole envelope, not just the visible wet spot, and the choice of material should suit how the water is moving.

Work through the house in a clear order. First, inspect the basement walls, floor joints and any cracks, and mark each crack so you can measure it. Second, have cracks sealed by crack injection, which is priced at SAR 40–120 per metre, before any surface system goes on. Third, choose the main barrier: basement waterproofing is quoted at SAR 50–150 per m², bitumen membrane at SAR 15–35 per m², or spray foam at SAR 20–45 per m². Fourth, if the basement floor is finished with epoxy coating, budget SAR 35–90 per m² for that layer. Finally, check bathrooms and any water tank in the same visit, using bathroom waterproofing at SAR 15–40 per m² and tank internal coating at SAR 25–60 per m², so the whole property is protected together.

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

Signs that call for basement & foundation waterproofing

The following signs are worth checking before they grow:

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

The most common causes

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

Questions from Afif

Common mistakes we see

• Painting the basement wall while the water comes from outside

What you receive

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