Bitumen membrane in Yanbu: cost & published offers

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

Before we start: what we know about Yanbu

The centre of Yanbu sits about 6 m above sea level (SRTM open elevation data). Yanbu is about 1.2 km from the sea coast (OpenStreetMap).

Team note on Yanbu: 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.. Main roads in or near Yanbu: King Abdulaziz Road, Umluj Road, Al Hanan Street.

A typical owner in Yanbu might be looking after a flat roof on a family villa or a small apartment block, with a roof that has been exposed to sun and wind for years and is starting to show signs of wear. They want to know what a bitumen membrane job should cost, whether the offers they receive are fair, and what steps to take before any work begins. Their first question is usually about money, but the more useful question is whether the membrane suits the roof and the site.

Yanbu sits about 6 m above sea level near its centre and roughly 1.2 km from the coast. That combination means the city is close enough to the sea to feel its salty, humid air, yet high enough that the centre is not at risk of flooding from the sea. For a roof owner, the practical meaning is that the surface will face strong sun, salt exposure and wind-driven dust, all of which can age a membrane faster than inland conditions. Bitumen membrane for roofs in this area typically falls within SAR 15–35 per m², and that range is a reference for the material and labour in the job, not a promise of what any single quote will show. Other roof options, such as liquid roof waterproofing at SAR 8–25 per m², may suit a small or lightly used surface, while XPS boards at SAR 12–30 per m² are a separate type of insulation that is not interchangeable with a membrane.

Work through the job in a clear order. First, inspect the roof and note where water ponds, where cracks run and where any upstand walls or drain outlets sit, because these details decide how much detailing the membrane needs. Second, measure the area in square metres and, if cracks are present, measure their length in metres, since crack injection is priced separately at SAR 40–120 per m. Third, request at least two written quotes that show the surface area, the membrane type and what is included, such as preparation, primer and edge sealing. Fourth, compare the quotes line by line rather than by the total alone. Finally, agree on the start date, the protection layer to be used and how the work will be checked before you accept the job.

Prices shown on this page come from our own published price list for the city; the final price is set after inspection.

When do you need bitumen membrane?

The following signs are worth checking before they grow:

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

Where the problem usually comes from

• No protection layer — we check this before anything else.
• Seams that were not welded properly — we check this before anything else.

Tools and methods, and when we use them

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.

Quick comparison: facts and costs in Yanbu

Questions from Yanbu

What we advise against

• Leaving the membrane exposed without protection

What you get after the work

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