Floor & balcony waterproofing in Riyadh: with a verifiable technical report

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

Floor & balcony waterproofing in Riyadh: the local context

Team note on Riyadh: 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 Riyadh sits about 637 m above sea level (SRTM open elevation data).

Main roads in or near Riyadh: King Fahd Road, King Abdullah Road, King Abdullah.

Picture a homeowner in an older Riyadh villa who notices a damp patch spreading across the ceiling below the roof terrace, or a balcony floor that has started to lift and show hairline cracks after a rainy spell. Like many owners of this property type, they want the problem fixed once, properly, without guessing which product will last. They have heard different advice from neighbours and contractors, and they are not sure whether the issue is the surface, the membrane underneath, or water finding its way through a crack.

The local facts matter here. The centre of Riyadh sits about 637 m above sea level (SRTM open elevation data), which gives the city a dry, open landscape where heavy storms are short but intense, so water tends to pool on flat roofs and balcony floors before draining away. Because the surfaces are exposed to strong sun and temperature swings, coatings can crack and separate over time. For that reason, a balcony or roof is usually best treated as a system: the right surface product, a suitable membrane where needed, and proper crack repair before anything else is applied. Costs also vary by method, so comparing the options against the work actually needed helps avoid overspending. Liquid roof waterproofing, for example, falls in the range of SAR 10–25 per m², while bitumen membrane sits at SAR 15–35 per m², and XPS boards at SAR 15–30 per m².

A sensible sequence for this owner starts with a close inspection to find where the water actually enters, marking every crack and checking drainage outlets for blockages. Next, repair any cracks, since crack injection is priced at SAR 40–125 per metre and must be done before a surface coating is applied. Then clean and dry the surface thoroughly so the new layer bonds well. Choose the waterproofing method that matches the area: liquid roof waterproofing for open terraces, bitumen membrane where a more robust layer is needed, and spray foam at SAR 20–45 per m² where insulation is also wanted. Finish by confirming that falls direct water toward drains, and schedule a simple check after the first heavy rain to confirm the work has held.

Each job ends with a written report that carries a verification code you can check on our site.

Signs worth paying attention to

These are the signs most often linked to floor & balcony waterproofing:

• Damp under the light well
• Water passing from the balcony to the floor below
• A wrong fall towards the door threshold

The most common causes

• A blocked drain.
• A common cause: a threshold without waterproofing.
• Incorrect falls.

How we choose the tool in Riyadh

The steps in order

1. Checking the falls: Where water collects and where it should go.
2. Details: Thresholds, drains and upstands.
3. Waterproofing: The layer is applied and protected.
4. Flood test: Tested before the finish goes on.

Riyadh in facts and sources

Questions from Riyadh

Mistakes that cost more

• Tiling a balcony without waterproofing

The written outputs

You receive: the flood result and photos of the details, in a technical report with a verification code.