Bathroom waterproofing in Aljumum: for companies (annual contract)

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

Before we start: what we know about 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..

Aljumum sits in the western hills of the Kingdom, where the centre of the area is about 200 m above sea level (SRTM open elevation data). That height matters for bathroom waterproofing. Sites on rising ground often see sharper temperature swings between day and night, and water drains away from the slope quickly, so a bathroom wall or floor that is not sealed properly can stay wet on its lower edges while the upper surfaces look dry. For company contracts covering many buildings, we check each bathroom for drainage direction before we set a coating schedule.

Because the area sits at this elevation, we link each job to the exposure it faces. The bathroom waterproofing rate for this area is SAR 15–40 per m², and the price depends on how many wet walls and floors a building has, the state of the existing screed, and the access available to the crew. Epoxy coating is SAR 35–90 per m² and spray foam is SAR 20–45 per m²; we recommend epoxy where high-traffic floors need a hard, washable finish, and spray foam where the substrate moves or has many corners. Crack injection costs SAR 40–120 per metre, so a cracked wall is repaired before any surface coating goes on. Under an annual contract, these rates are set once and applied across the year, which keeps budgets predictable for facilities managers.

Owners who manage several properties often make the same errors, and our contract scope is written to avoid them. The most common is coating over a damp or dusty surface, which stops adhesion and leads to early peeling. Another is treating a leak at the source of a crack without sealing the cracks around it. Owners also tend to delay repairs until staining appears, when water has already reached the layers below. Finally, some skip a recheck after the first season, so small failures go unnoticed. Our annual plan schedules inspections and repairs so these mistakes are caught early.

For companies, an annual contract sets the scope, the visit schedule and the reports in writing.

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

Where the problem usually comes from

• The area around the floor drain.
• Corners without waterproofing tape.
• A damaged floor layer — we check this before anything else.

Tools and methods, and when we use them

The steps in order

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.

Aljumum in facts and sources

Common questions about bathroom waterproofing in Aljumum

What we advise against

• Waterproofing the floor while the supply pipe still leaks

The written outputs

You receive: the flood-test result and photos of each stage, in a technical report with a verification code.