Floor & balcony waterproofing for duplexes in Baish

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

What is specific about Baish for floor & balcony waterproofing

The centre of Baish sits about 84 m above sea level (SRTM open elevation data). Team note on Baish: 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..

Picture a family who bought a duplex in Baish, with the upper floor used as their home and the lower unit rented out. Over a few winters they noticed damp patches on the balcony ceiling below, a soft line of stain along the wall where the balcony slab meets the building, and a faint smell of mould in the lower bathroom. They were not sure whether the problem came from the roof, the balcony floor, or the plumbing. For owners of duplexes, where two households share one structure, water that finds a path through a floor or balcony affects both units, so it is worth acting early rather than waiting for the damage to spread.

The local facts shape how this should be approached. The centre of Baish sits about 84 m above sea level, which places the town on a gentle rise rather than in a low basin, so surface water tends to move away rather than pool for long. That does not remove the need for waterproofing, because rain still runs off flat balconies and roofs and finds weak joints. The owner should therefore focus on the surfaces most exposed to that runoff: the balcony floor, the junction with the wall, and the roof above the upper unit. Costs vary widely by method, from liquid roof waterproofing at SAR 8–25 per m² to epoxy coating at SAR 35–90 per m², so the choice should follow the condition of each surface rather than a single product for the whole building.

A practical sequence starts with inspection. Walk the balcony and roof after rain, mark every stain, hairline crack and standing puddle, and check where the lower ceiling is wet. Next, repair the cracks, since crack injection is priced per metre at SAR 40–120 per m and should come before any surface coating. Then choose the coating for each area: a bitumen membrane at SAR 15–35 per m² for a flat roof, or liquid roof waterproofing for lighter exposed surfaces, and a bathroom system at SAR 15–40 per m² where the floor above the lower unit is wet. Finally, make sure the new layer runs up the wall edge and that drainage outlets are clear, then record the work and schedule a check after the next rainy season.

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

When do you need floor & balcony waterproofing?

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

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

The most common causes

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

How we choose the tool in Baish

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 Baish

Questions from Baish

Common mistakes we see

• Tiling a balcony without waterproofing

The written outputs

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