Basement & foundation waterproofing in Alrass: cost & published offers

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

Why basement & foundation waterproofing differs in Alrass

The centre of Alrass sits about 695 m above sea level (SRTM open elevation data). Main roads in or near Alrass: King Abdulaziz Road, King Fahd Road, King Salman Road.

Team note on Alrass: 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 homeowner in Alrass who has a basement used for storage, a family room, or a rental unit. After a heavy rain, they notice damp patches on the lower walls, a faint musty smell, and a hairline crack running along the floor edge. They want to know what it will cost to seal the space properly, and they want a clear answer before any contractor starts work.

For this owner, the local facts shape the decision. Alrass sits at roughly 695 m above sea level, so the land is not flat and water can move across the surface and press against lower walls during storms. A basement here is therefore exposed to lateral pressure as well as rising damp, which is why the basement waterproofing rate of SAR 50–150 per m² is the main figure to plan around. If the crack is active, crack injection at SAR 40–120 per metre is often needed alongside it. Because basement work costs more than roof or bathroom work, it is sensible to compare the full scope rather than one line item.

Start by walking the space after rain and marking every damp area and crack with tape, so the scope is written from evidence. Next, measure the wall and floor area in square metres and the length of each crack in metres, so each quote can be checked against the published ranges. Then decide on the system: an epoxy coating at SAR 35–90 per m² for interior surfaces, a bitumen membrane at SAR 15–35 per m² for external protection, or XPS boards at SAR 12–30 per m² as an insulating layer where the wall is accessible. Fourth, ask each provider to price the work line by line against these rates, and to state whether surface preparation and crack repair are included. Finally, confirm the drainage and ground-level details in writing before accepting any quote, so the owner knows exactly what the price covers.

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

Signs that call for 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

The most common causes

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

Tools we use in Alrass

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 Alrass

Questions from Alrass

Common mistakes we see

• 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.