Floor & balcony waterproofing for duplexes in Shaqra

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

Before we start: what we know about Shaqra

The centre of Shaqra sits about 713 m above sea level (SRTM open elevation data). Team note on Shaqra: 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 first thing checked on a duplex floor or balcony job in Shaqra is elevation, because the centre of the town sits about 713 m above sea level according to SRTM open elevation data. At that height the site is not on the coast, so the technician should not assume the salt-laden conditions that shape coastal work. Instead, the first checks focus on the surfaces already in place: the slope of the balcony floor toward its drainage outlets, the state of the upper slab where it meets the wall, and any ponding that has left staining on the soffit below. Shaqra's cooler upland setting does not remove the need for drainage, so water is traced from where it lands to where it leaves before any product is chosen.

Several things are left to the site visit, because no fixed rule can settle them from a distance. The technician must confirm the moisture content of the concrete, the width and movement of any cracks, and whether the balcony membrane has already debonded at the edges. The choice between a liquid roof system, a bitumen membrane, or a spray foam layer depends on what the surface can take and how it is used, so the final specification is set on the spot. Price bands for each option also differ widely, so the visit should record the measured area and any crack length in metres, which determines whether a crack injection line item is needed alongside the main surface work.

For the technician's benefit, the working data is straightforward. Bathroom waterproofing in the reference bands runs from SAR 15 to SAR 40 per m², liquid roof waterproofing from SAR 8 to SAR 25 per m², and bitumen membrane from SAR 15 to SAR 35 per m². Epoxy coating sits between SAR 35 and SAR 90 per m², and crack injection between SAR 40 and SAR 120 per metre. Recording these measurements against each zone lets the quote follow the real scope of the duplex rather than a generic allowance, and it keeps the client informed about where the spend actually goes.

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

Signs worth paying attention to

If you notice one of these signs in Shaqra, 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 — we check this before anything else.
• A common cause: a threshold without waterproofing.
• Incorrect falls.

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 Shaqra

Short answers for Shaqra

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.