Bitumen membrane for villas in Alqunfudhah

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

Bitumen membrane in Alqunfudhah: the local context

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..

For villas in Alqunfudhah, the most common problem with a bitumen membrane is water finding its way under the membrane at the edges, upstands and penetrations rather than through the open roof field. Where a membrane is laid without proper detailing around parapets, drains and pipes, moisture collects beneath the surface and the seams begin to lift, which is why the work is judged as much by its edges as by its area.

Local conditions shape how the job should be approached. The centre of Alqunfudhah sits about 7 m above sea level, and the town is about 0.4 km from the sea coast. That combination means a roof here is close to salt-laden coastal air while still needing to shed rainwater quickly rather than hold it. Membrane laps and upstands should therefore be sealed with the same care as the main area, and drainage outlets should be checked so water moves away from the surface. The bitumen membrane itself typically costs SAR 15–35 per m², and the rate depends on the roof's condition and how much preparation it needs.

Before the visit, it helps to have a few details ready. Describe the roof's current state, including any visible cracks, ponding after rain, or past repairs, and say whether the villa has a parapet, water tank or rooftop fixtures that will need flashing. Note which areas leak, such as a particular room below the roof or the edge along a wall. Confirm whether you are planning a full replacement or a repair of a limited section, since that changes the scope and the cost. Ask the service provider to explain how they will treat the edges and penetrations, and to set out the expected coverage in square metres so the quote can be compared line by line with the rate given above.

Villas often have several lines and tanks; we test them one at a time so the cause is clear.

Signs worth paying attention to

The following signs are worth checking before they grow:

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

Where the problem usually comes from

• Seams that were not welded properly.
• A common cause: no protection layer.

How we choose the tool in Alqunfudhah

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.

Quick comparison: facts and costs in Alqunfudhah

Questions from Alqunfudhah

Common mistakes we see

• 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.