Basement & foundation waterproofing for apartments in Najran

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

Why basement & foundation waterproofing differs in Najran

The centre of Najran sits about 1309 m above sea level (SRTM open elevation data). Main roads in or near Najran: Al Jarba Street.

Team note on Najran: 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..

Is your basement or foundation taking in water, and will it cost a lot to fix? In Najran, property owners often ask this after a wet season or when they notice damp walls below ground. The centre of Najran sits about 1309 m above sea level, and that elevation is a useful starting point for understanding the site. Basement waterproofing is priced at SAR 50–150 per m², and crack injection is priced at SAR 40–120 per metre. Epoxy coating runs SAR 35–90 per m², while spray foam sits at SAR 20–45 per m². These ranges let you compare options before anyone sets foot on your property.

The inspection begins with a walk through the basement or foundation area to find where moisture enters. The technician checks walls and floors for cracks, measures the length of each crack that needs injection, and estimates the total area to be treated in square metres. Where water is coming from above, the roof is also examined, since liquid roof waterproofing is priced at SAR 8–25 per m² and bitumen membrane at SAR 15–35 per m². Any water storage tank on the property may be checked too, as tank internal coating is priced at SAR 25–60 per m². The aim of the visit is to confirm which surfaces need work and to give you a clear measurement sheet for each one.

Before the visit, gather what will help the technician work quickly and give you an accurate quote. Note where you have seen water, damp patches, or cracks, and when the problem appears most often. Clear access to the basement, roof hatch and any tanks so that the surfaces can be measured without delay. Have the approximate dimensions of the basement, the bathrooms that need attention and the roof area ready if you know them. If you have seen earlier repair work, bring details of it so the technician can plan around it. These simple steps make the inspection faster and the price estimate easier to understand.

In an apartment, a problem may start in your unit or in a shared line; we separate the two before any work.

When do you need 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.
• A high groundwater level — we check this before anything else.
• A common cause: cracks at construction joints.

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 Najran

Questions from Najran

Common mistakes we see

• Painting the basement wall while the water comes from outside

What you get after the work

You receive: the source, the treatment and the follow-up result, in a technical report with a verification code.