Floor & balcony waterproofing for duplexes in Tarout

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

Floor & balcony waterproofing in Tarout: the local context

Tarout is about 0.9 km from the sea coast (OpenStreetMap). The centre of Tarout sits about 3 m above sea level (SRTM open elevation data).

Main roads in or near Tarout: Uhud Road, Al Khaleej Road, Al Aimmah Bridge. Team note on Tarout: 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..

An owner of a duplex in Tarout often notices the same pattern: a damp patch appears on a balcony ceiling below, a hairline crack opens along a floor edge after a hot summer, and the question becomes where the water is actually getting in. Duplexes are especially tricky because the upper floor's balcony and the lower floor's ceilings share the same structure, so a leak in one place can show up somewhere quite different. Owners usually want a clear plan that deals with the cause rather than just repainting the stain.

Tarout's location shapes what that plan should look like. The centre of the town sits about 3 m above sea level, and it is roughly 0.9 km from the sea coast. That combination means the ground is low and close to salty, humid air, so moisture and salt can work into concrete and render over time. For a duplex, this makes the balcony slab, the floor junctions and any ground-level areas worth checking carefully. Costs also vary by method: liquid roof waterproofing typically falls between SAR 8 and SAR 25 per m², bitumen membrane between SAR 15 and SAR 35 per m², and crack injection between SAR 40 and SAR 120 per metre, so it helps to know which part of the problem you are paying to fix before work begins.

A practical sequence works best. First, mark every crack and damp area, and note whether water shows up after rain or after washing the balcony. Second, have the surfaces cleaned and dried, because coatings will not bond to dust, salt or wet concrete. Third, repair cracks by injection before any surface membrane goes on, so the coating is not sitting over an open path for water. Fourth, choose the surface system that suits the area: liquid roof waterproofing for open roofs, bitumen membrane where a more robust barrier is needed, or epoxy coating where a hard, easy-to-clean finish suits a balcony or floor. Finally, ask for the new layer to be checked for pooling and for the edges and drains to be sealed, then keep a simple record of the areas treated and the materials used for future maintenance.

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

When do you need floor & balcony waterproofing?

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

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

The most common causes

• A common cause: incorrect falls.
• A threshold without waterproofing — we check this before anything else.
• A common cause: a blocked drain.

Tools we use in Tarout

The steps in order

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 Tarout

Common questions about floor & balcony waterproofing in Tarout

Common mistakes we see

• 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.