Bitumen membrane in Alnuayriyah: 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 Alnuayriyah

Team note on Alnuayriyah: 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 Alnuayriyah: King Abdulaziz Road.

The centre of Alnuayriyah sits about 49 m above sea level (SRTM open elevation data).

Bitumen membrane work in Alnuayriyah starts with the ground itself. The centre of Alnuayriyah sits about 49 m above sea level (SRTM open elevation data), so the first check is how water is likely to move across the site rather than assuming it will drain away on its own. A technician will look at the slope of the ground around the building, the condition of existing surfaces, and whether the membrane can be laid over a sound base. Bitumen membrane is priced at SAR 15–35 per m², and that range reflects how much preparation a surface needs before the membrane goes down, so the early inspection matters for the final figure as well as the result.

Several points cannot be settled from a desk or a map and are left to the site visit. The technician needs to see the actual substrate, check for cracks and their width, note where water already collects, and judge whether the surface is dry enough to take the membrane. Where cracks are present, crack injection is priced at SAR 40–120 per metre, and whether that work is needed will only be clear once the crack is seen up close. Access, the shape of the roof or podium, and the position of drains and upstands are also confirmed on the spot, since these decide how the membrane is cut, lapped and finished at edges.

To help the technician arrive prepared, it is useful to share a few details before the visit. Describe what sits above the membrane, such as a finished floor, planting or a parking deck, because that affects the layers and protection needed. Mention any past leaks, when they occurred and where they showed up inside the building. Note the approximate area to be covered, since bitumen membrane is quoted per square metre, and say whether the surface is new concrete or an older layer already coated. Finally, tell us if the roof is in use, as foot traffic and equipment access change how the work is sequenced. With this information the visit can focus on confirming the condition of the surface rather than gathering basic facts, and the assessment can be more accurate from the start.

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

Signs that call for bitumen membrane

These are the signs most often linked to bitumen membrane:

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

Causes we see in the field

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

Tools and methods, and when we use them

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.

Quick comparison: facts and costs in Alnuayriyah

Common questions about bitumen membrane in Alnuayriyah

Mistakes that cost more

• Leaving the membrane exposed without protection

What you get after the work

You receive: photos of the welds and the flood-test result, in a technical report with a verification code.