Bathroom waterproofing for residential buildings in Sharurah

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

Before we start: what we know about Sharurah

Team note on Sharurah: 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 Sharurah sits about 724 m above sea level (SRTM open elevation data).

Main roads in or near Sharurah: King Abdulaziz Road, King Fahd Road.

An owner of a flat or small apartment block in Sharurah usually notices bathroom trouble quietly at first: a faint damp patch on the ceiling below, tiles that sound hollow when tapped, or a smell of mould near the shower corner. By the time the problem is visible, water has often been travelling inside the walls for months. Many owners in this situation want a clear answer about what to do, what it will cost in general terms, and how to avoid repeating the work.

The location matters here. The centre of Sharurah sits about 724 m above sea level, which places it on high ground in the south-west of Saudi Arabia, where the climate is noticeably wetter and cooler than the desert towns further north. Higher, more exposed buildings face stronger wind-driven rain and wider day-to-night temperature swings, and those swings make tiles and mortar expand and contract. For a bathroom, that means small cracks in grout and at wall-floor joints can open up over time and let water through. Owners should therefore treat bathroom waterproofing as a recurring maintenance question rather than a one-off job, and should check it after heavy rain seasons.

The practical sequence is straightforward. First, inspect the bathroom closely: look for cracks, lifted tiles, soft plaster and staining, and check the wall behind the shower and the floor edge against the wall. Second, decide on the approach, since a bathroom waterproofing job is typically priced between SAR 15 and SAR 40 per m², while crack injection is priced per metre, between SAR 40 and SAR 120 per m, which suits isolated leaks. Third, choose a coating or membrane that suits the surface, with epoxy coating at SAR 35–90 per m² and spray foam at SAR 20–45 per m² among the common options. Fourth, make sure the floor is dry and clean before any coating is applied, and allow the material to cure fully before tiling. Finally, schedule a re-check after the first wet season and keep a simple record of what was done, so that any future contractor knows the history of the bathroom.

For a whole building, a survey of the shared systems comes before unit-by-unit work.

Signs that call for bathroom waterproofing

These are the signs most often linked to bathroom waterproofing:

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

The most common causes

• A common cause: the area around the floor drain.
• A common cause: corners without waterproofing tape.
• A damaged floor layer — 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 — Sharurah

Questions from Sharurah

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.