Bathroom waterproofing in Aljumum: before buying or handover

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

What is specific about Aljumum for bathroom waterproofing

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..

Aljumum sits about 200 m above sea level, and that matters for how a bathroom is checked before you buy or accept a handover. Elevation data for the centre of Aljumum, taken from SRTM open elevation data, places the district at roughly that height, which means the ground is not a low-lying area where water collects at the foot of a slope. Start with the surfaces that take the most water: the shower floor, the junction where the floor meets the wall, and the area around the drain. Look for hairline cracks in the tiles and grout, and check that the floor falls gently toward the drain rather than pooling in the middle. Ask what waterproofing was applied and whether it covers the full wet zone, not just the tiled floor.

Some things can only be judged at the site visit. Tap the tiles to listen for hollow spots that suggest lifting, and run water for several minutes in the shower and basin to see whether it drains cleanly and whether any moisture appears on the ceiling or wall of the room below. Check the sealant around the bath, the shower tray and the basin for gaps or discolouration. Look at the paint on the external wall behind the bathroom for staining or bubbling. The technician will also want to see whether any patch or repair has already been done, and how the previous work was finished, because that affects what is possible next.

To help the technician, bring any earlier records, the date of the last renovation, and a note of where leaks or damp have been seen, including the room below if it is affected. Say which surfaces you plan to keep and which you may change, since costs differ widely between methods. Waterproofing a bathroom is typically quoted at SAR 15–40 per m², epoxy coating at SAR 35–90 per m², and spray foam at SAR 20–45 per m², so the chosen method shapes the budget. If there are cracks, crack injection is priced at SAR 40–120 per metre. Sharing these details up front lets the technician give a more accurate assessment at the first visit.

Before buying or taking over a property, an inspection gives you findings in writing before you sign.

Signs worth paying attention to

The following signs are worth checking before they grow:

• A stain under the bathroom on the floor below
• Damp around the shower
• Worn grout

The most common causes

• A common cause: corners without waterproofing tape.
• A damaged floor layer — we check this before anything else.
• A common cause: the area around the floor drain.

How we choose the tool in Aljumum

From the first visit to the report

1. Finding the source: A supply-pipe leak is ruled out first.
2. Preparation: The floor is opened and cleaned where needed.
3. Corners and details: Tape and detailing at corners, drains and pipe entries.
4. Flood test: The floor is tested before tiling.

Facts and costs — Aljumum

Common questions about bathroom waterproofing in Aljumum

Mistakes that cost more

• Waterproofing the floor while the supply pipe still leaks

What you get after the work

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