Bitumen membrane for duplexes in Tabuk

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

Before we start: what we know about Tabuk

The centre of Tabuk sits about 762 m above sea level (SRTM open elevation data). Team note on Tabuk: 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..

Is a bitumen membrane the right choice for a duplex roof in Tabuk, and what will it cost? Bitumen membrane for a roof here is typically priced at SAR 15–35 per m², which is a useful starting point before any site visit. Tabuk's centre sits about 762 m above sea level, so the climate and roof exposure matter when you compare this option with liquid roof waterproofing at SAR 10–25 per m² or XPS boards at SAR 10–30 per m². The final choice depends on your roof's condition, not on price alone.

The inspection usually begins with a walk across the full roof area to look for cracks, blistering, ponding water, and failed joints around parapets, drains, and rooftop fixtures. Where the problem is a line rather than a broad surface, the technician will note the length of the crack, since crack injection is priced per metre at SAR 40–115 per m. If the roof edges or upstand walls show damage, these are recorded separately so the quote reflects the true extent of the work. The inspector also checks whether the existing surface can take a new membrane or needs preparation first. Each finding is noted so you can see exactly what is recommended and why.

Before the visit, clear access to the roof and remove loose items such as planters, cables, and stored materials so the surface can be inspected properly. Have any previous waterproofing records, invoices, or warranty papers ready, along with notes on where leaks have appeared inside the house after rain. If the duplex has a water tank on the roof, mention it, because tank internal coating is priced separately at SAR 25–55 per m². Tell the inspector which floor the leaks reach, since a leak on an upper floor may point to a different source than one at ground level. Having this information ready helps the visit run efficiently and gives you a clear, written basis for comparing quotes.

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

• A flat concrete roof that needs waterproofing
• Old rolls that are cracking

Where the problem usually comes from

• A common cause: no protection layer.
• Seams that were not welded properly — we check this before anything else.

How we choose the tool in Tabuk

How the work is done, step by step

1. Preparation: Cleaning, priming and repairs.
2. Torch welding: Overlaps are welded and checked.
3. Details: Upstands, drains and bases.
4. Protection and flood test: Protection is laid after a successful flood test.

Facts and costs — Tabuk

Common questions about bitumen membrane in Tabuk

What we advise against

• Leaving the membrane exposed without protection

The written outputs

You receive: photos of the welds and the flood-test result, in a technical report with a verification code.