Bathroom waterproofing for hotels & serviced apartments in Aljumum

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

Bathroom waterproofing in Aljumum: the local context

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 (SRTM open elevation data).

An owner of a small hotel or serviced apartment building in Aljumum often has a simple worry: guests use the bathrooms all day, and a single leak behind a tiled wall can damage the room below, stain the corridor, and cost a booking. Many of these owners run the building themselves, so they know the rooms well but may not know how a hidden seal has been applied. They want the work done once, done properly, and done without closing half the property for weeks.

The local setting matters here. The centre of Aljumum sits about 200 m above sea level (SRTM open elevation data), which means the site is not a low-lying basin where water collects naturally, but water still finds its way through any gap in a wet area. Bathroom waterproofing for this property type is usually priced at SAR 15–40 per m², and the owner should expect the cost to move with the surface type and how much preparation is needed. Where a bathroom sits above a room that guests use, the consequences of a failure are larger than the cost of the membrane itself, so it is sensible to treat the floor and the lower wall zones as the priority.

A practical sequence helps. First, have the existing tiles, grout and any cracked wall edges inspected, and mark each crack so it can be treated before the coating goes on. Second, where a crack runs through the structure, crack injection is usually priced at SAR 40–120 per metre and should be completed before any surface layer. Third, choose the finish that suits the wet zone: epoxy coating at SAR 35–90 per m² or spray foam at SAR 20–45 per m² are common options for areas that get heavy use. Fourth, let each layer cure fully and test the floor with standing water before tiling returns. Keep the dates and receipts together so the next inspection has a clear record.

For hotels and serviced apartments, rooms are handled in batches to keep units available.

When do you need bathroom waterproofing?

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

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

The most common causes

• A common cause: the area around the floor drain.
• A common cause: a damaged floor layer.
• Corners without waterproofing tape.

Tools and methods, and when we use them

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

Questions from Aljumum

Mistakes that cost more

• Waterproofing the floor while the supply pipe still leaks

The written outputs

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