Bitumen membrane for apartments in Dhahran

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

Bitumen membrane in Dhahran: the local context

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..

Do apartments in Dhahran need a bitumen membrane, and what does the work actually involve? The answer depends on the building and where its water is coming from. The centre of Dhahran sits about 16 m above sea level, and the city is about 5.9 km from the sea coast. A bitumen membrane is one of several options for roofs and below-ground walls, and it typically costs SAR 15–35 per m². Owners weighing it against other systems should look at the surface, the exposure and the budget before choosing.

A site inspection for a bitumen membrane usually starts with the roof or the wall the membrane would cover. The inspector checks the existing surface for cracks, blistering, ponding and old failed sealant, and notes where water tends to collect or run. Cracks that run through the surface are often treated first, and crack injection is priced separately at SAR 40–120 per metre, so the inspector measures the length of each crack. Where the membrane meets walls, drains and parapets, the joints are examined closely, since these are the usual points of leakage. The inspector then records the measured area in square metres, which becomes the basis for the quote. If insulation is being considered, XPS boards at SAR 12–30 per m² can be priced alongside the membrane so the owner sees both options in one report.

Before the visit, the property owner should gather a few items so the inspection is useful. Bring the building's plans or a rough sketch showing the roof or wall areas, with any drains, stairs and rooftop equipment marked. Note any past leaks, the rooms or walls affected, and whether repairs were made before. Clear access to the roof, the basement or the affected wall, and make sure the tenants in the affected flats know when the inspector will arrive. If a water tank sits on the roof, mention it, because tank internal coating is priced separately at SAR 25–60 per m². A clear record of past work and access arrangements helps the inspector give an accurate, comparable estimate.

In an apartment, a problem may start in your unit or in a shared line; we separate the two before any work.

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.
• Seams that were not welded properly.

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.

Dhahran in facts and sources

Common questions about bitumen membrane in Dhahran

Common mistakes we see

• 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.