Basement & foundation waterproofing for residential buildings in Alula

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

Before we start: what we know about Alula

The centre of Alula sits about 697 m above sea level (SRTM open elevation data). Main roads in or near Alula: King Abdullah Road.

Basement and foundation waterproofing in Alula needs to account for the town's setting. The centre of Alula sits about 697 m above sea level (SRTM open elevation data), which places it on a high desert plateau rather than on the coastal plain. At this elevation the air is typically dry, so the main concern for a basement is not constant rainfall but the occasional heavy downpour that can run off hard, sun-baked ground and pool against a wall. Because of this, a waterproofing plan here is built around protecting the structure from short, intense water flows and from the moisture that moves through concrete over time.

Each fact shapes the practical work. The elevation and dry climate mean that a basement waterproofing system is usually planned as a barrier against surface runoff and ground moisture rather than against long periods of standing water, so the work is scoped by the wall area that needs protection. Basement waterproofing is priced at SAR 50–150 per m², and that range reflects how much of the wall and slab is exposed to the ground. Bitumen membrane (SAR 15–35 per m²) and XPS boards (SAR 12–30 per m²) are often chosen to guard the outside of foundation walls, while epoxy coating (SAR 35–90 per m²) and spray foam (SAR 20–45 per m²) suit interior faces. Crack injection, priced at SAR 40–120 per metre, is the right fix when a hairline fault appears, because sealing the crack stops the entry point before it spreads.

Owners who plan carefully avoid a few common mistakes. The first is treating a basement as a single job: bathrooms, tanks and roofs have their own rates, with bathroom waterproofing at SAR 15–40 per m², tank internal coating at SAR 25–60 per m², and liquid roof waterproofing at SAR 8–25 per m². Mixing these up leads to the wrong material in the wrong place. The second is patching a crack without checking the wall around it, which lets moisture find another route. The third is ignoring the drainage outside the building, since in a dry, sloping landscape runoff is the main source of trouble. Sizing the work to the real surfaces, and not to a guess, keeps the job both sound and within budget.

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

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

Causes we see in the field

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

Tools and methods, and when we use them

How the work is done, step by step

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 Alula

Common questions about basement & foundation waterproofing in Alula

What we advise against

• 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.