Bitumen membrane for offices & commercial complexes in Alqunfudhah

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

Before we start: what we know about Alqunfudhah

Alqunfudhah is about 0.4 km from the sea coast (OpenStreetMap). The centre of Alqunfudhah sits about 7 m above sea level (SRTM open elevation data).

Team note on Alqunfudhah: 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..

An office or commercial complex owner in Alqunfudhah often faces a roof that carries heavy daily use: air-conditioning units, foot traffic for maintenance, and tenants who expect uninterrupted operations. A small leak above a meeting room or a ceiling stain in a shared corridor can quickly become a complaint, a repair bill and a disruption to business. Planning a bitumen membrane before the problem appears is usually more economical than reacting afterwards.

The local facts shape that planning. The centre of Alqunfudhah sits about 7 m above sea level, and the town is about 0.4 km from the sea coast. Being so close to the coast means the building is exposed to salt-laden air, which can accelerate wear on surfaces and fixings, so the membrane choice and its edges deserve careful attention. The bitumen membrane itself is priced at SAR 15–35 per m², which is a useful reference when comparing it with liquid roof waterproofing at SAR 8–25 per m² or XPS boards at SAR 12–30 per m². If the property also has a basement, waterproofing there runs at SAR 50–150 per m², so it is worth surveying all areas together for a clear picture of the total budget.

A practical sequence helps keep the project controlled. First, inspect the roof and record existing cracks, ponding areas and drainage outlets. Second, mark any cracks and plan crack injection, which is priced at SAR 40–120 per metre, before the membrane goes down. Third, clean and dry the substrate thoroughly, since membranes bond poorly to dust or moisture. Fourth, install the bitumen membrane with overlaps sealed at every joint and upturns carried up parapets and roof edges. Fifth, test the finished surface by checking drainage flow and inspecting corners and penetrations after the first rainfall. Finally, schedule a simple annual inspection so small issues are caught early, protecting tenants and the property's long-term value.

For offices and commercial complexes, work is scheduled to avoid disrupting staff and visitors.

When do you need bitumen membrane?

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

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

Causes we see in the field

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

Tools we use in Alqunfudhah

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.

Alqunfudhah in facts and sources

Questions from Alqunfudhah

Common mistakes we see

• 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.