Bathroom waterproofing for rest houses & farms in Jazan

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

Why bathroom waterproofing differs in Jazan

Team note on Jazan: 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.. Jazan is about 1.9 km from the sea coast (OpenStreetMap).

The centre of Jazan sits about 7 m above sea level (SRTM open elevation data).

Bathroom waterproofing for rest houses and farms in Jazan starts with the location itself. The centre of Jazan sits about 7 m above sea level (SRTM open elevation data), and the city is about 1.9 km from the sea coast (OpenStreetMap). Because a property is so close to the coast, the technician checks how moisture and salt-laden air may reach the bathroom walls and floor before any product is chosen. Typical bathroom work in this setting is priced at SAR 15–40 per m², and the first check is whether the existing surface can hold a new system at all, since a damp or flaking substrate will defeat even a good membrane.

Several points are left to the site visit, because they cannot be judged from a distance. The technician looks at the age and type of the existing screed, the position of drains and floor gradients, any visible cracks and their length, and whether water is already seeping through from a neighbouring wall or a tank. Crack injection is quoted at SAR 40–120 per metre, so the length and location of cracks affect the estimate directly. Roof and tank areas are assessed separately, since liquid roof waterproofing runs SAR 8–25 per m², bitumen membrane SAR 15–35 per m², and tank internal coating SAR 25–60 per m². The technician also decides whether epoxy coating (SAR 35–90 per m²), spray foam (SAR 20–45 per m²) or XPS boards (SAR 12–30 per m²) suit the wall or floor in question, based on what is actually found on site.

To help the technician, the owner or farm manager can prepare a few details before the visit. Note the rough floor area of each bathroom in square metres, the number of walls to be treated, and any place where water has been seen or smelled. Mention whether the bathroom is used daily or only during seasonal stays, since heavy use changes how the finish should be chosen. Clear access to the bathroom, the water supply and the drainage outlets will allow the work to be planned without delay. Photographs of problem areas, taken in daylight, are also useful, and they let the technician prepare the right materials before arriving on site.

Rest houses and farms often have long buried lines, tanks and irrigation that need separate tests.

Signs worth paying attention to

If you notice one of these signs in Jazan, 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

Causes we see in the field

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

Tools and methods, and when we use them

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.

Facts and costs — Jazan

Short answers for Jazan

Common mistakes we see

• Waterproofing the floor while the supply pipe still leaks

What you receive

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