Floor & balcony waterproofing for apartments in Rastanura

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

Before we start: what we know about Rastanura

Team note on Rastanura: 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.. Rastanura is about 0.2 km from the sea coast (OpenStreetMap).

Rastanura sits about 0.2 km from the sea coast (OpenStreetMap), so homes here live with salt-laden air and moisture that drifts in off the water. For apartment owners, that closeness means floors and balconies face a steady, damp exposure that can slowly work its way into concrete and finishes. Our floor and balcony waterproofing work starts from that reality, choosing systems that resist moisture moving through the structure rather than treating the surface alone.

Each fact shapes the practical service. Because the coast is so near, we first check whether moisture is rising through the slab or entering at the edges of the balcony, since the answer decides whether we apply a membrane, an epoxy coating or a crack repair. Bathroom waterproofing is priced at SAR 15–40 per m², and it is often the first place we look in a flat, since bathroom floors take daily water and sealing them early protects the rooms below. Epoxy coating at SAR 35–90 per m² suits balconies that are walked on and need a hard, sealed wearing surface. Spray foam at SAR 20–45 per m² and liquid roof waterproofing at SAR 8–25 per m² suit exposed roof-level and terrace areas where a seamless layer is needed. Crack injection, priced at SAR 40–120 per m, is the usual answer when a hairline split lets water through, and bitumen membrane at SAR 15–35 per m² gives a tough barrier under tiles. Where a flat sits above a water store, tank internal coating at SAR 25–60 per m² keeps the tank sealed, and XPS boards at SAR 12–30 per m² can add insulation beneath a new screed.

Owners who avoid these problems tend to skip a few predictable mistakes. They do not wait for a damp patch to appear on a ceiling before acting, because by then water has usually travelled a long way. They do not paint over a cracked balcony, since the crack keeps moving and the paint peels. They do not mix systems without checking that each layer bonds to the one beneath it. And they do not treat a tank or basement as separate from the flat above it, since a leak in one spreads into the other. Planning the work around these points keeps a coastal apartment dry for longer.

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

Signs that call for floor & balcony waterproofing

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

• 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 — we check this before anything else.
• A threshold without waterproofing.

Tools and methods, and when we use them

How the work is done, step by step

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.

Quick comparison: facts and costs in Rastanura

Common questions about floor & balcony waterproofing in Rastanura

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.