Bitumen membrane in Alqurayyat: without breaking

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

Why bitumen membrane differs in Alqurayyat

The centre of Alqurayyat sits about 497 m above sea level (SRTM open elevation data). Team note on Alqurayyat: 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..

Alqurayyat sits at about 497 m above sea level, and that elevation is the first thing worth noting when a bitumen membrane job is being planned here. The checklist starts with the substrate and the way water reaches it, because a membrane laid over a surface that still holds moisture or movement will not hold for long. Before any quotation is finalised, the technician checks whether the existing roof or slab is sound, whether there are old layers that need removing, and whether drainage outlets and upstands are in place to carry water away. Bitumen membrane is priced at SAR 15–35 per m², and that range only means something once the surface has been prepared properly, so the preparation check comes ahead of any price discussion.

Some points can only be settled on the day, when the technician is standing on the roof. The exact condition of the surface, the width and depth of any cracks, the position of penetrations such as pipes and vents, and the slope needed to move water toward the outlets all depend on what is physically visible. The site visit is also where the choice between a full membrane and a related system is made, since the price for liquid roof waterproofing is SAR 8–25 per m² and XPS board insulation is SAR 12–30 per m², and which suits the roof depends on its use and exposure. Crack injection, priced at SAR 40–120 per metre, is quoted only after the cracks are measured in place. Nothing in this section should be read as a substitute for that inspection.

To help the technician, it is useful to have the roof plan or rough sketch, the age of the building, and any record of past leaks or repairs, including where water was seen and in which season. Note whether the roof is accessible for foot traffic, equipment and materials, and whether a water tank or plant sits on it, since tank internal coating is a separate job at SAR 25–60 per m². Clear access, a clean description of the problem areas, and photographs taken from a few angles will let the visit cover the work in one trip. Bring the details together before the appointment so that the technician can focus on the surface itself.

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

When do you need bitumen membrane?

If you notice one of these signs in Alqurayyat, 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.
• Seams that were not welded properly — we check this before anything else.

Tools and methods, and when we use them

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.

Quick comparison: facts and costs in Alqurayyat

Common questions about bitumen membrane in Alqurayyat

Mistakes that cost more

• Leaving the membrane exposed without protection

What you receive

The written output: photos of the welds and the flood-test result. The report is numbered and can be checked with its verification code.