Bitumen membrane for restaurants in Aldawadmi

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

Why bitumen membrane differs in Aldawadmi

Team note on Aldawadmi: 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.. The centre of Aldawadmi sits about 976 m above sea level (SRTM open elevation data).

Main roads in or near Aldawadmi: King Abdulaziz Road, Dawadmi Bujadiyah Road.

Bitumen membrane work for restaurants in Aldawadmi starts with the location itself. The centre of Aldawadmi sits about 976 m above sea level (SRTM open elevation data), so the first thing a technician looks at is how water is likely to move across the roof and down the building. At that height, the surrounding ground and drainage paths shape where rainwater collects, and a restaurant roof with heavy kitchen traffic and rooftop equipment needs its falls and outlets checked before any membrane is laid. Pricing for the bitumen membrane itself is set at SAR 15–35 per m², and that range is the starting reference when a client compares the job with other options such as liquid roof waterproofing at SAR 8–25 per m² or XPS boards at SAR 12–30 per m².

Several things can only be settled at the site visit. The technician needs to see the existing surface, check for cracks and blistering, and confirm whether the roof has a previous coating that must be removed or can be bonded to. The extent of the work follows from measurement on the spot, so the final area and the number of metres of crack injection, which is priced at SAR 40–120 per metre, cannot be fixed from a desk. Parapets, drains, pipe penetrations and any access hatch are also assessed in person, as are the loads from kitchen extraction units and air conditioning plant. If the restaurant has a basement or water tank nearby, those are inspected separately, since basement waterproofing is SAR 50–150 per m² and tank internal coating is SAR 25–60 per m², and they are not part of the roof quote.

To help the technician prepare, it is useful to have the following ready before the visit. Share the approximate roof area, the age of the building, and any records of past leaks or repairs, including the dates and the parts of the roof affected. Note whether the restaurant operates at night or needs quiet hours, since bitumen work involves heating and a clear schedule keeps service running. Tell the technician about any rooftop equipment that must stay in place, and identify the access route for materials. With this information, the visit can focus on the checks that matter and give the restaurant owner a clear picture of what the bitumen membrane job will involve.

For restaurants, visits are planned outside service hours and recorded for the premises file.

Signs that call for bitumen membrane

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 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.

Aldawadmi in facts and sources

Short answers for Aldawadmi

What we advise against

• Leaving the membrane exposed without protection

What you get after the work

You receive: photos of the welds and the flood-test result, in a technical report with a verification code.