Bathroom waterproofing for clinics in Unaizah

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

Before we start: what we know about Unaizah

The centre of Unaizah sits about 667 m above sea level (SRTM open elevation data). Team note on Unaizah: 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 clinics often fails at the floor-to-wall junction and around drains, where repeated cleaning with strong disinfectants and constant water use slowly break down the seal. In a busy clinic, a small leak can go unnoticed behind tiles for months, damaging the screed below and the room beneath it. The most common complaint we see is damp patches on ceilings of adjacent rooms, which usually trace back to a bathroom floor that was never fully sealed at its edges.

In Unaizah, the approach changes because the town sits at about 667 m above sea level, where sun exposure and temperature swings are strong. Heat can make some coatings soften or crack if they are not suited to it, so product choice matters as much as surface preparation. For bathroom floors and walls in clinics, the typical range is SAR 15–40 per m², with epoxy coating at SAR 35–85 per m² offering a harder, easier-to-clean finish where hygiene is a priority. Spray foam, at SAR 20–45 per m², can suit awkward shapes, while crack injection at SAR 40–115 per metre is used where hairline cracks run along the junction. Where a bathroom sits above a basement or plant room, the wider basement range of SAR 50–145 per m² may apply.

Before the visit, ask the provider which system they propose for the bathroom floor and walls, and whether it is compatible with the cleaning products your clinic uses daily. Ask how they will prepare existing cracks and drains, and whether the price quoted covers the full room or only the floor. Request a clear written scope showing the area in square metres and any linear metres of crack injection, so you can compare quotes on equal terms. Finally, ask who will inspect the work before tiling resumes, and how long the room should stay out of use while the coating cures.

For clinics, work is scheduled around patient hours and kept to the areas that need it.

Signs worth paying attention to

The following signs are worth checking before they grow:

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

The most common causes

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

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.

Unaizah in facts and sources

Common questions about bathroom waterproofing in Unaizah

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.