Bathroom waterproofing for villas in Alrass

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

Bathroom waterproofing in Alrass: the local context

Main roads in or near Alrass: King Abdulaziz Road, King Fahd Road, King Salman Road. The centre of Alrass sits about 695 m above sea level (SRTM open elevation data).

Team note on Alrass: 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 Alrass sits about 695 m above sea level, which is a useful starting point for any bathroom waterproofing job in a villa here. At that elevation the area is generally less exposed to the flooding seen in low-lying parts of the city, so the first check is usually the bathroom floor itself: its falls towards the drain, the condition of old tile grout, and any hairline cracks at the junction of wall and floor. Bathroom waterproofing typically falls in the range of SAR 15–40 per m², while epoxy coating sits at SAR 35–90 per m², so the technician will note which finish the existing surfaces can take before quoting.

Several things are left for the site visit, because they cannot be judged from a description. The technician will measure the actual wet areas, confirm whether the shower tray and walls need spray foam (SAR 20–45 per m²) or a different system, and decide whether any cracks need crack injection, which is priced at SAR 40–120 per metre. If the villa has a roof terrace or a water tank nearby, the visit will also cover liquid roof waterproofing (SAR 8–25 per m²), bitumen membrane (SAR 15–35 per m²) and, where relevant, tank internal coating (SAR 25–60 per m²). Access to the bathroom, the state of the plumbing and the timing of other trades are all confirmed on the day rather than in advance.

To help the technician arrive prepared, residents can share a few details in advance: the number of bathrooms and their approximate sizes, whether the floors are tiled or stone, any past leaks or damp patches, and whether the bathroom sits above a room or a basement. Note the age of the villa and any earlier waterproofing work, and mention if a basement or XPS board insulation (SAR 12–30 per m²) is already part of the home. Clear photographs of visible cracks and staining, taken in daylight, make the first visit faster and the scope of work more accurate.

In a villa, tanks, the roof and the yard lines are usually yours to look after, so it helps to know where the main valve and tank hatches are.

Signs that call for bathroom waterproofing

These are the signs most often linked to bathroom waterproofing:

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

The most common causes

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

Tools we use in Alrass

How the work is done, step by step

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.

Alrass in facts and sources

Common questions about bathroom waterproofing in Alrass

Common mistakes we see

• Waterproofing the floor while the supply pipe still leaks

What you get after the work

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