Floor & balcony waterproofing in Jazan: with a verifiable technical report

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

Floor & balcony waterproofing in Jazan: the local context

Team note on Jazan: 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.. Jazan is about 1.9 km from the sea coast (OpenStreetMap).

The centre of Jazan sits about 7 m above sea level (SRTM open elevation data).

Jazan sits close to the Red Sea coast, with its city centre about 7 m above sea level and roughly 1.9 km from the sea coast (OpenStreetMap). That combination matters for floor and balcony work. Low elevation and nearness to the shoreline mean that humid, salt-laden air is a constant presence, and moisture can move into concrete slabs and tile beds more readily than it would inland. Our surveys therefore start with the substrate: we check for existing moisture, salt efflorescence and hairline cracks before choosing a system, because a membrane laid over a damp or contaminated base will not hold for long.

Each fact translates into a practical decision. Because the centre sits only about 7 m above sea level, drainage falls and outlets need careful checking, so we confirm gradients and drain positions before any coating is applied. Because the sea is about 1.9 km away, we weigh salt and humidity exposure when recommending materials, favouring systems that tolerate wet and dry cycles. Costs also vary with the chosen method: a basement job is priced at SAR 50–150 per m², a bathroom at SAR 15–40 per m², an epoxy coating at SAR 35–90 per m², spray foam at SAR 20–45 per m², and a bitumen membrane at SAR 15–35 per m². Crack injection is priced at SAR 40–120 per metre, so we measure every crack before quoting. Balcony and roof areas can use liquid roof waterproofing at SAR 8–25 per m², while XPS boards cost SAR 12–30 per m² where insulation is also needed.

Owners who avoid these problems tend to follow a few habits. They do not skip the base preparation, since most failures begin under the membrane rather than on the surface. They do not treat cracks as cosmetic and ignore them, because water enters through the smallest opening. They do not choose the cheapest per-metre rate without checking what the rate covers, and they do not let a balcony or floor be sealed while standing water still sits on it. Finally, they ask for the drainage and the crack count to be written into the scope, so the final bill and the finished surface match what was agreed.

Each job ends with a written report that carries a verification code you can check on our site.

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

The most common causes

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

Tools we use in Jazan

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 — Jazan

Short answers for Jazan

Common mistakes we see

• Tiling a balcony without waterproofing

What you get after the work

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