Basement & foundation waterproofing for duplexes in Tabuk

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

Before we start: what we know about Tabuk

Team note on Tabuk: 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.. The centre of Tabuk sits about 762 m above sea level (SRTM open elevation data).

Picture a duplex owner in Tabuk who has just noticed a damp patch spreading along the basement wall after a heavy rain. The lower floor may hold a storage room, a laundry area or a rented flat, and the owner wants the problem fixed before it spoils the walls or the foundation. Many owners in this position are not sure whether the damage is a leak from above, moisture rising from the ground, or water collecting around the outside of the foundation, so they start by looking for quick fixes that rarely last.

Tabuk sits about 762 m above sea level, which means the city is higher than the coastal areas and its ground conditions are shaped by that elevation. For a duplex owner, this matters because the basement and foundation face the same moisture pressures as any below-ground structure, and the first step is to read the signs carefully rather than assume the cause. Costs also vary widely by method: basement waterproofing ranges from SAR 50 to SAR 145 per m², while crack injection runs from SAR 40 to SAR 115 per metre. Knowing which part of the structure is failing helps you choose a method that fits the damage rather than paying for coverage you do not need.

Start by identifying where the water enters, noting whether the patch appears after rain only or stays damp all year. Next, measure the affected wall and floor areas and mark any cracks, since crack injection is priced per metre and may solve a narrow leak without treating the whole surface. Then choose the coating or barrier suited to the area: epoxy coating from SAR 35 to SAR 85 per m² for sealed interior surfaces, or bitumen membrane from SAR 15 to SAR 35 per m² where the exterior can be reached. Finally, arrange a site check before work begins, confirm the scope in writing, and schedule a follow-up inspection once the surface has cured.

In a duplex, the two floors often share lines, so tests are done floor by floor.

When do you need basement & foundation waterproofing?

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

Where the problem usually comes from

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

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.

Tabuk in facts and sources

Common questions about basement & foundation waterproofing in Tabuk

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.