Bitumen membrane for villas in Yanbu

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

Bitumen membrane in Yanbu: the local context

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.

Yanbu is a coastal city, and its centre sits about 6 m above sea level, while the sea coast lies roughly 1.2 km away. For a bitumen membrane on a villa roof or podium, that combination means the first checks are about how water drains and how the membrane meets the sea-facing parapets and edges, because wind-driven salt air and rain run towards the lower edges before they reach the outlets. A technician should look at the falls on the roof, the condition of existing outlets and the upstands along the perimeter before any price is discussed. Bitumen membrane is typically priced at SAR 15–35 per m², and the figure that matters most on site is the total area to be covered, since the rate applies per square metre.

Some points can only be settled at the site visit. The technician needs to confirm the substrate condition, whether old membrane is being removed or the new layer is laid over it, and whether any screed has cracked or lifted. Crack repairs are measured per metre and cost SAR 40–120 per metre, so every crack line should be walked and its length noted. The visit is also the time to check the slope of the roof, the state of the parapet flashing, and whether a separate insulation layer such as XPS boards at SAR 12–30 per m² is wanted beneath the membrane. Access for hoisting materials, the position of air-conditioning units and any rooftop tanks should be recorded, because these affect how the membrane is laid around fixed objects.

Information that helps the technician prepare is simple and worth gathering before the visit. Note the roof area in square metres, the number of drainage outlets and their approximate position, and any past leaks with the rooms they appeared in. Photographs of the roof surface, the parapet and the underside of the roof where staining shows will save time. If the villa has a basement or bathrooms with their own waterproofing, mention them, since bathroom waterproofing is priced separately at SAR 15–40 per m², and the technician will want to plan one visit for all the work rather than several. Clear access times and a contact who can open the roof hatch will also keep the appointment on schedule.

In a villa, tanks, the roof and the yard lines are usually yours to look after, so it helps to know where the main valve and tank hatches are.

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:

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

Where the problem usually comes from

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

Tools we use in Yanbu

From the first visit to the report

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

Questions from Yanbu

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.