Bitumen membrane in Alqunfudhah: with a verifiable technical report

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

Before we start: what we know about Alqunfudhah

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.. The centre of Alqunfudhah sits about 7 m above sea level (SRTM open elevation data).

Alqunfudhah is about 0.4 km from the sea coast (OpenStreetMap).

Alqunfudhah sits only about 7 m above sea level, and the centre of town is roughly 0.4 km from the coast. Because the ground is so low and so close to the sea, the first thing a technician checks for a bitumen membrane job is how water is likely to move through and under the slab, not just how much area needs covering. Groundwater and salt-laden moisture in coastal air both work against a flat roof or podium, so the surface and any upstands need to be sound before any membrane goes down. The price range for bitumen membrane here is SAR 15–35 per m², and that figure is a starting point for comparison rather than a fixed quote for your roof.

Several things can only be settled on the site visit. The technician needs to see the actual condition of the substrate, whether there are existing cracks, blisters, ponding areas or failed sealant at parapets and drains, and whether an old membrane has to be removed or can be overlaid. The slope and drainage outlets, the height and condition of upstands, the access to the roof and the way the building is used day to day all affect the method and the labour needed. Where cracks are present, crack injection (SAR 40–120 per metre) may be needed before the membrane is laid, and that decision depends on what is found in person. Nothing in this section replaces that inspection.

To help the technician prepare, note the roof's approximate area in square metres, when the building was last waterproofed, and any past leaks, including where they appeared inside the building after rain. Mention whether the roof is used for water tanks, air-conditioning units or a rooftop space, since these change the layout and protection needed. If you have photographs of the roof surface, the parapets and any visible cracks, send them ahead of time. Tell us if you have a drawing or a rough sketch with the drain positions marked. With this information, the visit can focus on confirming the work rather than starting from scratch.

Each job ends with a written report that carries a verification code you can check on our site.

Signs worth paying attention to

The following signs are worth checking before they grow:

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

Causes we see in the field

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

How we choose the tool 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

Common questions about bitumen membrane in 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.