Bitumen membrane in Yanbu: for companies (annual contract)

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

What is specific about Yanbu for bitumen membrane

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

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

For commercial buildings in Yanbu, the most common problem with bitumen membrane roofing is water that lingers on flat roofs and finds its way into the structure through laps, edges, and around roof penetrations such as vents, pipes, and plant bases. On company premises, a leak can halt operations, damage stock or equipment, and interrupt the work of staff below, so the aim of an annual contract is to catch these weak points before they turn into disruption. Bitumen membrane typically falls in the range of SAR 15–35 per m², and the scope of work on a commercial roof depends heavily on how many penetrations and upstands the roof has.

Yanbu's location shapes how this work should be approached. The centre of the city sits about 6 m above sea level, and the city lies roughly 1.2 km from the coast, so the roof is exposed to a salty, humid air environment that can accelerate wear on surface finishes, flashings, and fixings. Installers working here should pay close attention to the condition of the membrane's surface protection and to metal edge details that may corrode over time. Because the city is low-lying and close to the sea, drainage outlets and gutters also deserve regular checks, since blocked outlets allow standing water to build up and test the membrane at its weakest points.

Before the visit, ask the provider to confirm the exact roof area and the number of penetrations, upstands, and drainage outlets so the quote reflects the real scope. Ask whether the annual contract includes scheduled inspections, what the inspection covers, and how minor repairs such as splits at laps or failed sealant are handled between visits. It also helps to ask which other services, such as crack injection at SAR 40–120 per metre or liquid roof waterproofing at SAR 8–25 per m², are available if the inspection shows the roof needs more than membrane work. Finally, ask for a clear written description of access arrangements, so that your operations can continue with minimal interruption during the work.

For companies, an annual contract sets the scope, the visit schedule and the reports in writing.

When do you need bitumen membrane?

These are the signs most often linked to bitumen membrane:

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

Where the problem usually comes from

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

Tools we use in Yanbu

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

Mistakes that cost more

• Leaving the membrane exposed without protection

What you receive

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