Basement & foundation waterproofing in Allith: for companies (annual contract)

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

Before we start: what we know about Allith

Main roads in or near Allith: Al Laith Road, Amr Bin Al Aas Street. Allith is about 1.2 km from the sea coast (OpenStreetMap).

The centre of Allith sits about 5 m above sea level (SRTM open elevation data).

Basement and foundation leaks are the most common problem companies face in Allith, usually showing up as damp walls, efflorescence on concrete, and water seeping through cracks at the junction between the wall and floor slab. Because the basement is below ground, water pressure builds against the structure, and the fix has to deal with that pressure rather than just the stain on the surface. Before any work starts, a proper assessment should identify where the water is entering and whether it comes from the wall, the floor, or a crack that needs injecting.

Allith's location shapes the approach. The centre of Allith sits about 5 m above sea level, and the area is about 1.2 km from the sea coast. That combination means ground moisture and salt-laden air are both relevant, so the choice of materials matters. Waterproofing for a basement here typically starts from SAR 50–150 per m², while crack injection is priced separately at SAR 40–120 per metre, so the survey should measure both the wall area and the length of every crack. Where a structure is near the coast, surface finishes such as epoxy coating at SAR 35–90 per m² can be considered for protection, but they only perform well when the substrate is dry and properly prepared, so moisture readings should be taken before any coating is specified.

Before the visit, ask the provider to confirm which part of the structure they expect to treat and how they will locate the source of water. Ask for the area in square metres and the crack length in metres so the scope can be compared line by line against the rates above. Ask whether the quote covers surface preparation, and whether it includes making good any cracks before coating. Finally, ask how they will verify the result, such as checking the wall after the first rainy season, so your company can judge the work against a clear standard rather than an unclear promise.

For companies, an annual contract sets the scope, the visit schedule and the reports in writing.

When do you need basement & foundation waterproofing?

The following signs are worth checking before they grow:

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

Causes we see in the field

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

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 Allith

Questions from Allith

Mistakes that cost more

• 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.