Commercial & warehouse insulation for duplexes in Tabarjal

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

Before we start: what we know about Tabarjal

The centre of Tabarjal sits about 548 m above sea level (SRTM open elevation data). Team note on Tabarjal: 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..

Tabarjal sits about 548 m above sea level (SRTM open elevation data), so the first thing a technician checks on a commercial or warehouse job here is the building envelope itself rather than the price list. Roofs, external walls and any ground-contact slab are looked at before the scope is fixed, because these are the surfaces that take the most weather and the most heat. Where a warehouse roof is exposed, liquid roof waterproofing is typically priced at SAR 8–25 per m², and a bitumen membrane at SAR 15–35 per m², so the surface type and its condition decide which route makes sense. Insulation boards such as XPS (SAR 12–30 per m²) and spray foam (SAR 20–45 per m²) are considered once the underlying surface is confirmed sound.

Several things are left to the site visit, and no figure is given for them in advance. The technician measures the real areas in square metres and any crack lengths in metres, since crack injection is charged at SAR 40–120 per metre and a single long crack can change the total considerably. They note whether a basement or store floor is in contact with the ground, which is where basement waterproofing (SAR 50–150 per m²) applies, and whether any tank or enclosed reservoir on the premises needs an internal coating (SAR 25–60 per m²). Drainage paths, access for materials and the state of existing coatings are also assessed on the spot, because they affect both the method and the final quote.

To help the technician arrive prepared, send a short description of the building before the visit: the approximate roof and wall areas, whether the warehouse has a ground-level slab or a basement, and any places where water has previously entered or cracks have appeared. Photographs of the affected surfaces and a note of the year the existing finish was applied are also useful. Mention any bathroom or wet-room areas in the same building, since bathroom waterproofing (SAR 15–40 per m²) is handled separately from the main envelope work. A clear picture at the start lets the visit focus on measuring and testing rather than on basic questions.

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 Tabarjal, it is a good moment to talk to the team:

• Leaks in a hangar or warehouse
• High heat that affects stored goods

Causes we see in the field

• Blocked gutters — we check this before anything else.
• Metal-sheet joints — we check this before anything else.
• A common cause: old insulation.

Tools and methods, and when we use them

The steps in order

1. Full survey: The whole roof is surveyed and photographed.
2. Phased plan: Work is planned around the facility’s operations.
3. Execution and documentation: Each phase is recorded in the quality log.

Tabarjal in facts and sources

Questions from Tabarjal

Common mistakes we see

• Doing everything at once without considering the facility’s operations

The written outputs

You receive: a phased plan and a quality record, in a technical report with a verification code.