Bitumen membrane in Khafji: with a verifiable technical report

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

Before we start: what we know about Khafji

Khafji is about 2 km from the sea coast (OpenStreetMap). The centre of Khafji sits about 9 m above sea level (SRTM open elevation data).

Main roads in or near Khafji: King Abdullah Road. Team note on Khafji: 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..

Bitumen membrane work in Khafji starts with the site's location. The centre of Khafji sits about 9 m above sea level, according to SRTM open elevation data, and the town is about 2 km from the sea coast, according to OpenStreetMap. Both facts matter for how a technician reads a roof or slab. Because the ground is low and the coast is close, the first checks focus on where water is likely to collect, how it drains off the surface, and whether any ponding has already left staining or softened edges. A technician will also note the age of the existing membrane and whether earlier repairs have been patched over.

The site visit is where most of the judgement happens. Once the surface is open, the technician examines laps, upstands, drain outlets and the junction with walls and parapets, since these are the points where bitumen membranes usually fail first. Substrate condition comes next: whether the screed is sound, whether moisture is trapped below the old layer, and whether cracks in the slab need separate treatment before any new membrane goes on. Pricing for a bitumen membrane in Khafji is typically quoted from SAR 15–35 per m², but the final figure depends on what the visit reveals, so the quote is only confirmed after inspection.

For the technician, the most useful information is a clear record of the roof area, the number of drain outlets, the height of upstands, and any places where the surface has been previously repaired or coated. Notes on access, working hours and any areas that must stay in use also help planning. If you are comparing this work with other options, the wider price range for related systems runs from SAR 8–25 per m² for liquid roof waterproofing to SAR 12–30 per m² for XPS boards used in insulation layers. Sharing photographs of the roof and any leak marks before the visit lets the technician arrive prepared and reduces the time spent on the first inspection.

Each job ends with a written report that carries a verification code you can check on our site.

Signs worth paying attention to

These are the signs most often linked to bitumen membrane:

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

Where the problem usually comes from

• Seams that were not welded properly.
• A common cause: no protection layer.

Tools we use in Khafji

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 Khafji

Questions from Khafji

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.