Bitumen membrane in Dhahran: emergency

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

Why bitumen membrane differs in Dhahran

The centre of Dhahran sits about 16 m above sea level (SRTM open elevation data). Dhahran is about 5.9 km from the sea coast (OpenStreetMap).

Team note on Dhahran: 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..

What do you do when a bitumen membrane on your Dhahran roof starts leaking in the middle of the night? Dhahran's centre sits about 16 m above sea level, and the coast is roughly 5.9 km away, so the area is not low-lying, but a leaking roof still needs prompt attention before water spreads into the rooms below. A bitumen membrane is the material most often used for roof waterproofing here, and it typically costs SAR 15–35 per m² to install, so a repair decision should start with an accurate look at what has failed rather than a guess about how much area is affected.

When a technician attends, the first step is to trace where the water is actually entering. The inspection usually begins with the roof surface itself, checking the bitumen membrane for splits, blisters, lifted edges and exposed areas around drains, parapets and roof penetrations. Cracks in the surrounding concrete or screed are checked as well, because a crack that lets water through can look like a membrane fault. Where a crack is found, the repair is priced separately as crack injection at SAR 40–120 per metre. The inspector also looks at the ceiling and walls below the suspected spot to confirm that the water path matches the roof defect, and notes whether any adjacent area, such as a roof-mounted water tank, shows signs of trouble that would need tank internal coating at SAR 25–60 per m².

Before the visit, gather a few simple details so the inspection can move quickly. Note the location of the first sign of water, whether it is a stain, a drip or damp plaster, and when it started, especially if it followed rain. Clear access to the roof, the stairs or hatch, and the rooms beneath the leak, and move furniture or valuables away from the affected area. If possible, take photographs of the stain and of any cracks or blisters you can see from the roof edge without climbing onto unsafe surfaces. Having these notes ready helps the technician separate a membrane repair from a crack or drainage issue, and lets you agree on scope and cost with the right information in hand.

If water is flowing, close the main valve first, then call or message with photos.

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

The most common causes

• No protection layer — we check this before anything else.
• Seams that were not welded properly — we check this before anything else.

Tools we use in Dhahran

From the first visit to the report

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.

Facts and costs — Dhahran

Questions from Dhahran

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.