Basement & foundation waterproofing in Alaridah: cost & published offers

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

What is specific about Alaridah for basement & foundation waterproofing

The centre of Alaridah sits about 2591 m above sea level (SRTM open elevation data).

Water seeping through basement walls and floors is the most common problem we see in this type of property. In Alaridah, which sits about 2591 m above sea level, the usual cause is not standing flood water but moisture moving through concrete and up from the ground. Cracks, poorly sealed joints and old coatings that have lost their bond all allow this to happen, and the damp often shows first as staining, a musty smell or peeling paint along the lower walls.

Because the centre of Alaridah is at this height, the local conditions shape how the work is planned. Basement waterproofing is priced at SAR 50–150 per m², and the right method depends on what the inspection finds. Where the wall has active cracks, crack injection at SAR 40–120 per metre is often used first, followed by a surface system such as epoxy coating at SAR 35–90 per m² or a bitumen membrane at SAR 15–35 per m². For wet areas inside the same building, bathroom waterproofing runs at SAR 15–40 per m², and spray foam at SAR 20–45 per m² can suit awkward shapes. Where a water tank sits in the property, tank internal coating at SAR 25–60 per m² is a separate job with its own specification. Insulation boards such as XPS at SAR 12–30 per m² may be added where the wall needs thermal as well as moisture protection.

Before the visit, ask the provider to explain exactly which area and which method the quote covers, and to show the rate used for each item listed. Ask whether the inspection will include the cracks and joints, not only the visible damp patches, and whether any surface preparation is included in the per-square-metre price. Confirm how the work will be measured, how long the site will need to stay dry before coating, and what will be cleaned up at the end. A clear written scope, with each rate matched to a defined part of the job, makes it far easier to compare offers and to see what you are paying for.

Prices shown on this page come from our own published price list for the city; the final price is set after inspection.

When do you need basement & foundation waterproofing?

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

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

The most common causes

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

Tools we use in Alaridah

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.

Facts and costs — Alaridah

Questions from Alaridah

Mistakes that cost more

• Painting the basement wall while the water comes from outside

The written outputs

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