Bitumen membrane in Alnuayriyah: without breaking

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

Bitumen membrane in Alnuayriyah: the local context

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

Main roads in or near Alnuayriyah: King Abdulaziz Road.

Can a bitumen membrane be laid on a roof in Alnuayriyah without breaking the existing surface? Most property owners here ask this before they agree to any work, and the answer depends on how the old layer is checked first. The centre of Alnuayriyah sits about 49 m above sea level, and bitumen membrane work is priced at SAR 15–35 per m², which gives owners a clear starting figure before a technician arrives. Price alone does not decide the method, though. A careful crew checks the existing surface before anything is removed, so the work follows the condition of the roof rather than a fixed template.

The inspection follows a set order. The technician first walks the whole roof and marks any blisters, cracks, or soft patches, then checks the edges, drains, and upstands where water most often gets under the sheet. Cracks that run through the surface are usually repaired by crack injection, which is priced at SAR 40–120 per metre, so the length of each crack is recorded on site. Where the roof lies below a bathroom or a basement wall, the technician notes that too, because those areas may need a different system such as epoxy coating or spray foam. The findings are written down room by room so the owner can see exactly what is proposed before any work begins.

Before the visit, the owner should clear the roof of loose items, water tanks, and stored goods, and make sure the access hatch or stairs are open and safe. It helps to gather any earlier waterproofing invoices, warranty papers, or notes about past leaks, since they show where the membrane has failed before. Mark the rooms where water has been seen, and note whether the leak appears after rain or after using water upstairs. Having this information ready lets the inspection move quickly, and it gives the crew a clearer picture of the roof before any decision is made about what to lay down.

The aim is to locate the cause with instruments first, so any opening is limited to one point.

Signs worth paying attention to

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

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

Causes we see in the field

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

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.

Alnuayriyah in facts and sources

Short answers for Alnuayriyah

What we advise against

• 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.