Bitumen membrane for apartments in Yanbu

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

Before we start: what we know about Yanbu

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..

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).

Bitumen membrane is one of the most common solutions for apartment roofs and podium slabs in Yanbu, and the most frequent problem we see is water tracking under the membrane at upstands, drain outlets and where the roof meets walls. A membrane that looks sound on the surface can still let water pass at these junctions, and once moisture reaches the slab below it often shows first as stains on the top floor ceilings. Bitumen membrane typically costs SAR 15–35 per m², so the real value lies in getting these details right rather than simply laying more area.

Yanbu's location changes how we approach the job. The centre of the city sits about 6 m above sea level, and the coast is only about 1.2 km away, so the air carries salt and humidity that can attack exposed surfaces and aggravate rust in embedded fixtures. Because the ground is low and the sea is close, we pay extra attention to how water drains off the roof and how the membrane is finished at parapets and edges. Any salt-laden moisture trapped under a poorly sealed detail can work its way into the substrate over time, so the preparation of the surface and the flashing details matter as much as the membrane itself.

Before the visit, ask the provider to confirm which roof or slab is being treated and how many square metres it covers, so the quote reflects the actual area. Ask how they will handle upstands, drains and wall junctions, and whether they will inspect the existing membrane for blisters or lifted laps before recommending a new layer. Clarify whether the work includes repairing any cracks, since crack injection is priced separately per metre. It also helps to ask whether the old membrane will be removed or overlaid, and what the plan is for protecting the finished surface from foot traffic and heat. Clear answers on these points will show you how carefully the job will be done.

In apartment buildings, the floor below is often where a leak shows first.

When do you need bitumen membrane?

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

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

The most common causes

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

How we choose the tool in Yanbu

The steps in order

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 — Yanbu

Short answers for Yanbu

What we advise against

• Leaving the membrane exposed without protection

The written outputs

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