Floor & balcony waterproofing for duplexes in Hail

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

Why floor & balcony waterproofing differs in Hail

Team note on Hail: 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 Hail sits about 1002 m above sea level (SRTM open elevation data).

Does a duplex in Hail really need its floors and balconies waterproofed, and what will it cost? The centre of Hail sits about 1002 m above sea level, a high plateau where daytime heat and cool nights make building materials expand and contract, and that movement is often what opens hairline cracks in slabs and balcony edges. Our floor and balcony work for duplexes covers the surfaces most exposed to that cycle. Typical rates for the materials we use are spray foam at SAR 20–45 per m², epoxy coating at SAR 35–85 per m², bitumen membrane at SAR 15–35 per m², and liquid roof waterproofing at SAR 10–25 per m². Crack injection, where a hairline fault runs through a slab, is priced at SAR 40–115 per metre. The right choice depends on what we find on site, so the figures above are ranges, not a fixed quote.

Our visit starts with a walk-through of every floor level and balcony of the duplex. We look for surface cracks, ponding after rain, stains on ceilings below, and any sign that water is tracking along the edges where a balcony meets the wall. We mark each crack and measure the affected areas so the scope of work is written down before any material is chosen. Where a crack is active, we note its length in metres, because that is the basis for injection pricing. We then recommend a system for each surface, explaining why a membrane suits one balcony while a coating suits an internal floor. Nothing is applied until you have seen the markings and agreed the plan in writing.

Before the visit, clear the balconies and floors so we can reach the edges and drains, and note any spot where you have seen water before. Tell us which level of the duplex is affected, and if there has been a leak into a room below, mention which ceiling is involved. Keep photographs of the stains and cracks, especially after a rainfall, as they help us trace the source faster. If furniture or planters sit against the balcony wall, move them aside so the junction can be inspected properly. A little preparation lets the inspection focus on the real problem and gives you a clear, itemised estimate for your duplex in Hail.

In a duplex, the two floors often share lines, so tests are done floor by floor.

Signs that call for floor & balcony waterproofing

The following signs are worth checking before they grow:

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

Causes we see in the field

• A blocked drain — we check this before anything else.
• Incorrect falls.
• A common cause: 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.

Facts and costs — Hail

Common questions about floor & balcony waterproofing in Hail

What we advise against

• Tiling a balcony without waterproofing

What you receive

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