Basement & foundation waterproofing in Jazan: cost & published offers

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

Basement & foundation waterproofing in Jazan: the local context

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).

Picture a homeowner in Jazan who has a basement used for storage, a family room, or a small rental unit. After a rainy spell, they notice a damp patch on the lower wall, a faint musty smell, and a white crust forming near the floor. They are not sure whether the water is coming from the ground, a cracked wall, or a plumbing leak, and they want to know what repair will cost before anyone starts digging.

The local facts matter here. The centre of Jazan sits about 7 m above sea level, and the city is about 1.9 km from the coast. A site this close to the sea and this low in elevation can hold moisture in the soil, so basement walls may face steady pressure from groundwater and damp air. This is why a basement should be treated as a below-ground structure that needs a continuous barrier, not just a surface paint job. Budgeting is easier when you know the typical rates: basement waterproofing usually falls in the range of SAR 50–150 per m², crack injection runs SAR 40–120 per metre, and epoxy coating is SAR 35–90 per m². Spray foam, bitumen membrane, and XPS boards each have their own range, so the right choice depends on the surface and how much water pressure it faces.

Start by finding the source. Walk the basement after rain and mark every damp line, stain, and crack, and check whether any water comes from a pipe or drain. Next, measure the wall and floor areas in square metres and the length of visible cracks in metres, so you can estimate costs from the rates above. Then decide the method: crack injection for isolated cracks, a membrane or XPS board system for the walls, and an epoxy or spray coating for finishing the surface. Ask each contractor for a written scope that lists the area, the method, and the unit price. Finally, keep a record of the work, photographs of the prepared surfaces before coating, and a note of the date, so you can check the result after the next wet season.

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

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

How we choose the tool 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.

Facts and costs — Jazan

Short answers for Jazan

Common mistakes we see

• 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.