Floor & balcony waterproofing for offices & commercial complexes in Jazan

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

Before we start: what we know about Jazan

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).

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..

Does a commercial floor or balcony in Jazan really need a professional waterproofing check, or can it wait until water shows up on a ceiling below? For most office buildings and commercial complexes, waiting is the costlier choice. The centre of Jazan sits about 7 m above sea level, and the city is about 1.9 km from the sea coast, so property owners here live with humid coastal air and periodic heavy moisture. Those conditions make it sensible to check floors and balconies before leaks spread into finished areas. Waterproofing options on this page are priced per square metre or per metre of crack, with liquid roof waterproofing at SAR 8–25 per m², bitumen membrane at SAR 15–35 per m², epoxy coating at SAR 35–90 per m², and crack injection at SAR 40–120 per m, so the right method depends on the surface and the damage found.

The inspection starts with a walk over the floor and balcony surfaces to look for cracks, ponding areas, lifted edges, and staining on the soffit below. Crack injection is assessed by length, since it is priced per metre, while larger areas are measured in square metres for membranes, coatings or spray foam. Where a balcony or roof drains poorly, the inspector notes the slope and drain positions, because standing water is often the real cause of repeat leaks. Any basement or water-holding tank nearby is also checked, with basement waterproofing priced at SAR 50–150 per m² and tank internal coating at SAR 25–60 per m², so the team can record which areas fall under which method. The output is a simple written summary of the affected zones and a suggested method for each.

Before the visit, gather the building's original plans or drawings if you have them, and note the dates of any previous repairs or coatings. List the areas where you have seen damp, staining, bubbling paint or cracks, and mention whether leaks appear after rain or after cleaning. Clear access to the balconies, roof hatches and any basement entrance will save time, and let your tenants or staff know when the inspection is planned. Having this information ready helps the inspector give you an accurate scope, so your office or complex can keep operating with minimal disruption.

For offices and commercial complexes, work is scheduled to avoid disrupting staff and visitors.

When do you need floor & balcony waterproofing?

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

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

Where the problem usually comes from

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

How we choose the tool in Jazan

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.

Facts and costs — Jazan

Short answers for Jazan

What we advise against

• 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.