Bathroom waterproofing for apartments in Jazan

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

Why bathroom waterproofing differs in Jazan

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).

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..

Bathroom waterproofing in apartments usually fails at the joints rather than across the open floor. Where the tiled floor meets the wall, around the shower tray, and at the point where pipes pass through the slab, small gaps let water seep into the screed below. In an apartment, that moisture can reach the neighbour's ceiling or the walls of the room beneath, so a leak that looks minor can become a shared problem. Check these joints first, because they are the most common weak point and the easiest to fix before a wider job is needed.

Local conditions shape how we approach the work. The centre of Jazan sits about 7 m above sea level, and the city is about 1.9 km from the coast, so the air is humid and salt can be present in the building environment. Moisture is rarely far from the surface here, which means the surfaces need to be fully dry and clean before any membrane or coating goes on. Bathroom waterproofing is typically priced at SAR 15–40 per m², and the final figure depends on how many joints need treatment, how much of the old surface has to be cut back, and which system is chosen. For wet areas, a coating such as epoxy at SAR 35–90 per m² or a spray foam at SAR 20–45 per m² may suit the job, while a bitumen membrane at SAR 15–35 per m² can work for other sections. Crack injection, priced at SAR 40–120 per metre, is often needed where cracks run along the wall or floor edge.

Before the visit, ask the provider which system they propose for the bathroom floor, the shower area, and the wall edges, and why. Ask whether they will treat the joints and pipe penetrations as a separate step, and how they will check the surface is dry before work starts. Confirm the price basis, whether it is per square metre for the bathroom area or includes crack injection per metre, and ask what is excluded. Finally, ask whether the work will affect the flat below or the neighbours, and how access to the bathroom will be managed during curing. A clear set of answers before the visit makes it far easier to compare quotes fairly.

In apartment buildings, the floor below is often where a leak shows first.

Signs that call for bathroom waterproofing

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

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

Where the problem usually comes from

• 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 Jazan

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.

Jazan in facts and sources

Questions from Jazan

Common mistakes we see

• 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.