Floor & balcony waterproofing for apartments in Aljumum

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

Why floor & balcony waterproofing differs in Aljumum

The centre of Aljumum sits about 200 m above sea level (SRTM open elevation data). Team note on Aljumum: 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 Aljumum sits about 200 m above sea level, according to SRTM open elevation data, and that height shapes where water tends to gather on an apartment floor or balcony. Before quoting for anything, the technician checks which slabs and balcony edges sit lowest against the drainage outlets, because standing water finds the weakest joint first. Check for the existing finish and any tile or screed that has lifted, since moisture behind it often shows as hollow sounds or stains on the wall below.

Several things are left to the site visit, because they cannot be judged from a description. The technician needs to see the actual cracks, measure their length in metres so that crack injection can be priced at the right rate of SAR 40–120 per metre, and confirm whether the substrate is sound enough for epoxy coating at SAR 35–90 per m² or for spray foam at SAR 20–45 per m². Bathroom floors are inspected separately, since bathroom waterproofing runs at SAR 15–40 per m² and the detailing around drains and pipe penetrations differs from an open balcony. Rooftop access above the apartment, if any, is noted so that liquid roof waterproofing at SAR 8–25 per m² or a bitumen membrane at SAR 15–35 per m² can be considered where relevant.

To help the technician prepare, the resident should note the balcony and floor areas in square metres, the location of any water tanks in the building, and whether a basement sits below the unit, since basement waterproofing is priced at SAR 50–150 per m² and tank internal coating at SAR 25–60 per m². Photographs of the problem areas taken during a rain shower are especially useful. XPS boards, at SAR 12–30 per m², may be suggested where insulation is also needed. Clear information on these points lets the visit focus on the real causes of water entry rather than repeating basic measurements.

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

Signs worth paying attention to

If you notice one of these signs in Aljumum, it is a good moment to talk to the team:

• Water passing from the balcony to the floor below
• A wrong fall towards the door threshold
• Damp under the light well

Where the problem usually comes from

• A threshold without waterproofing — we check this before anything else.
• A common cause: incorrect falls.
• A common cause: a blocked drain.

How we choose the tool in Aljumum

From the first visit to the report

1. Checking the falls: Where water collects and where it should go.
2. Details: Thresholds, drains and upstands.
3. Waterproofing: The layer is applied and protected.
4. Flood test: Tested before the finish goes on.

Quick comparison: facts and costs in Aljumum

Questions from Aljumum

Common mistakes we see

• Tiling a balcony without waterproofing

What you get after the work

The written output: the flood result and photos of the details. The report is numbered and can be checked with its verification code.