Floor & balcony waterproofing for duplexes in Abu Arish

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

Before we start: what we know about Abu Arish

The centre of Abu Arish sits about 67 m above sea level (SRTM open elevation data). Team note on Abu Arish: 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..

Is it worth waterproofing a duplex balcony or floor in Abu Arish if the surface still looks dry? Often the damage is hidden beneath tiles and only shows up as stains or peeling paint after water has already moved through. The centre of Abu Arish sits about 67 m above sea level (SRTM open elevation data), which places most duplexes on sloped ground where rainwater runs off quickly, but it still collects on flat balconies and at slab joints. For floors and balconies, the cost of the work depends on the system chosen: liquid roof waterproofing runs SAR 8–25 per m², bitumen membrane SAR 15–35 per m², spray foam SAR 20–45 per m², and epoxy coating SAR 35–90 per m². Crack injection, used where a balcony edge or slab has opened up, is priced at SAR 40–120 per metre.

A site visit starts with a walk across the whole floor or balcony, looking for ponding, hollow-sounding tiles, staining on ceilings below, and hairline or wider cracks along joints and edges. The inspector checks where water currently drains and whether the outlets are blocked, since a membrane laid over a clogged drain will fail early. Cracks are measured and marked so the injection length can be quoted per metre, and sample areas may be opened to see the existing layers before any new system is chosen. Where a balcony meets an external wall, the junction is examined closely, because that is where most leaks start. The inspector then records the area in square metres, the crack lengths, and the surfaces that need treatment, so the scope matches what is actually there.

To make the visit useful, clear the balcony and floor of furniture, plants, and loose tiles so every edge and drain can be reached. Note when you have seen leaks or damp patches and in which rooms, and have any previous repair records or contractor reports ready to share. Check that the drains and outlets are accessible and not covered by fixed fittings. If the duplex has a shared roof or upper terrace above your floor, confirm who owns it before the visit, because water entering from above affects which surfaces need work. With these preparations, the inspection can give you a clear scope and a fair per-square-metre comparison.

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

Signs that call for floor & balcony waterproofing

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

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

Causes we see in the field

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

How we choose the tool in Abu Arish

From the first visit to the report

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 Abu Arish

Short answers for Abu Arish

What we advise against

• Tiling a balcony without waterproofing

What you receive

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