Floor & balcony waterproofing in Riyadh: before summer & rain season

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

The centre of Riyadh sits about 637 m above sea level (SRTM open elevation data).

Picture a family who owns a flat with a rooftop-access balcony in a Riyadh apartment block. Over several years they have noticed faint damp patches on the ceiling below the balcony and a hairline crack where the floor tiles meet the railing. Summer heat is coming, and the first rains of the season are not far off. They want to know whether the problem is small enough to fix in a weekend or serious enough to call in a specialist before it spreads.

The local facts shape that decision. The centre of Riyadh sits about 637 m above sea level (SRTM open elevation data), which places the city on a high plateau where the sun is intense and the air is very dry for much of the year. Heat makes concrete and sealants expand and contract daily, so cracks widen over time. When rain does arrive, it often comes in short, heavy bursts that test drainage and any weak joint in a balcony slab. An owner should therefore look at the balcony surface and the joints before the hot months, not after water has already reached the ceiling below.

A sensible order of work starts with inspection. Walk the balcony after a dry day and mark every crack, puddle line and tile that sounds hollow when tapped. Next, decide the scope by surface type. Crack injection is priced per metre (SAR 40–125 per m) and suits isolated hairline cracks in the slab. Liquid roof waterproofing (SAR 10–25 per m²) or a bitumen membrane (SAR 15–35 per m²) suits open areas that hold water. Where the balcony floor is tiled and used daily, an epoxy coating (SAR 35–95 per m²) can seal the surface, while spray foam (SAR 20–45 per m²) can serve as an insulating layer where heat is the main concern. Ask any contractor to show you the exact materials and to confirm the area in square metres before agreeing a price.

Finally, schedule the work around the weather. Complete crack repairs and membranes before the peak summer heat, leave enough curing time before the first rains, and check the drainage outlets so that water runs away from the building rather than pooling against the walls. Retest the balcony after the first heavy rain and record any new damp patches so the next repair can be targeted precisely.

Checks before summer and before the rain season catch problems while they are still small.

Signs worth paying attention to

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

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

The most common causes

• A blocked drain.
• Incorrect falls.
• A threshold without waterproofing — we check this before anything else.

Tools and methods, and when we use them

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.

Facts and costs — Riyadh

Short answers for Riyadh

Common mistakes we see

• Tiling a balcony without waterproofing

What you get after the work

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