Bitumen membrane in Rastanura: for companies (annual contract)

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

What is specific about Rastanura for bitumen membrane

Rastanura is about 0.2 km from the sea coast (OpenStreetMap). Team note on Rastanura: 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..

Is a bitumen membrane the right choice for a company building in Rastanura, and what will it cost over a year? Rastanura sits about 0.2 km from the sea coast, so buildings here face salt-laden air and damp ground, and the waterproofing needs to cope with both. For a bitumen membrane, the rate is SAR 15–35 per m², which gives a company a clear range to plan a yearly budget against. The same range applies whether you are covering a roof, a podium, or a flat area that gets regular water exposure. Our annual contract is written for companies that want one provider to keep these surfaces sealed across the year rather than arranging a fresh job each time a leak appears.

The inspection starts with a walk over the membrane and its edges, looking for blistering, lifted laps, cracks and any spot where water has pooled or found a path under the surface. Where a crack shows up, we note its length, because crack injection is priced per metre at SAR 40–120 per metre and needs to be measured before it can be quoted. Inspectors also check junctions with walls, drains and roof penetrations, since these are the points where water most often gets in. For any area near a water tank, the internal coating condition is recorded separately, with tank internal coating priced at SAR 25–60 per m². Each finding is written up with its location and a note on urgency, so your team can decide what to fix first and what can wait for the next scheduled visit.

Before the visit, it helps to gather a few things so the inspection runs smoothly and the report is accurate. Send a plan or sketch of the building showing roof areas, basement levels, and any tanks, with rough measurements in square metres or metres. Tell us about any past leaks, when they happened, and which areas were repaired before, along with any earlier waterproofing records or warranty papers. Make sure access is arranged for roofs, basements and plant rooms, and that the person in charge of the site is available to walk the area with the inspector. Clear, well-documented information at this stage lets us give your company a realistic annual plan rather than a guess.

For companies, an annual contract sets the scope, the visit schedule and the reports in writing.

Signs worth paying attention to

These are the signs most often linked to bitumen membrane:

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

Where the problem usually comes from

• No protection layer — we check this before anything else.
• 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.

Quick comparison: facts and costs in Rastanura

Short answers for Rastanura

Common mistakes we see

• 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.