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

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

Before we start: what we know about Jazan

Team note on Jazan: 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.. Jazan is about 1.9 km from the sea coast (OpenStreetMap).

The centre of Jazan sits about 7 m above sea level (SRTM open elevation data).

Does a company in Jazan really need to worry about its basement or foundation taking on water? The city centre sits only about 7 m above sea level, and Jazan is roughly 1.9 km from the coast, so ground-level moisture and seepage are a practical concern for commercial buildings with below-grade space. Basement waterproofing here typically falls in the range of SAR 50–150 per m², and the exact figure depends on the membrane or coating chosen, the condition of the substrate and the extent of the work. For sections that need a harder-wearing finish, epoxy coating is priced at SAR 35–90 per m², while crack injection, where the leak is traced to a specific line in the concrete, is billed at SAR 40–120 per metre.

Once you request a site visit, the inspection starts with a walk through the basement or foundation perimeter to look for damp patches, efflorescence, staining and active water tracks. The team then identifies the cracks, joints and penetrations where water is entering and measures the affected areas so the scope and cost can be set out clearly. Where roof or tank surfaces are included in the same project, the same process is followed for those areas, with liquid roof waterproofing at SAR 8–25 per m² and tank internal coating at SAR 25–60 per m² as reference rates. The aim of the visit is to confirm the source of the problem before any material is recommended.

To make the visit productive, prepare a current floor plan or sketch that marks the basement, foundation walls and any areas where water has appeared. Note when leaks are most noticeable, such as after heavy rain or during irrigation, and keep photographs of stains or cracks if you have them. Clear access to the lower level and to any rooftop or tank area helps the inspector work without delay. Having records of any previous repairs or coatings on the property will also help the team decide whether to repair, overlay or replace the existing system.

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

Signs worth paying attention to

These are the signs most often linked to basement & foundation waterproofing:

• 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 we use in Jazan

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.

Jazan in facts and sources

Short answers for Jazan

Mistakes that cost more

• Painting the basement wall while the water comes from outside

What you get after the work

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