Bitumen membrane for restaurants in Tabarjal

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

Before we start: what we know about Tabarjal

Team note on Tabarjal: 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 Tabarjal sits about 548 m above sea level (SRTM open elevation data).

Is a bitumen membrane a sensible choice for a restaurant roof in Tabarjal? The short answer is that it can be, and the price is one of the things to weigh. Bitumen membrane for roofs typically costs SAR 15–35 per m², which sits in the middle of the range we list for waterproofing work here. Tabarjal itself sits at roughly 548 m above sea level, so the site is inland and elevated, and that context matters when you compare roof options with the rest of the list, including liquid roof waterproofing at SAR 8–25 per m² and XPS boards at SAR 12–30 per m².

Before any quote is accepted, the visit should follow a clear sequence. Start by walking the full roof and noting ponding areas, lifted laps, blistering, and any places where pipes, vents, or kitchen extraction units pass through the surface. Check the upstands and parapet edges, because restaurant roofs often take heavy foot traffic from maintenance crews and suffer damage at the perimeter first. Look at the drainage outlets and confirm that water actually leaves the roof rather than pooling beside them. Where the existing surface is cracked or split, mark the lines so they can be assessed separately, since crack injection is priced per metre at SAR 40–120 per m and may be needed alongside the membrane. Record the condition with photographs and a simple sketch of the roof plan.

To make the visit productive, gather the building documents and the restaurant's operating details in advance. Have the roof layout, any previous waterproofing records, and warranty papers ready, along with notes on past leaks and the dates they occurred. Tell the inspector which areas of the roof sit above the kitchen, storage, or seating, because that affects access and the timing of the work. Clear the roof of stored equipment and signage where possible, and arrange access for the team. Bring a list of questions about the membrane specification, the preparation steps, and how the finished surface will be checked, so that the quote you receive can be compared fairly with the other options.

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

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

The most common causes

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

How we choose the tool in Tabarjal

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.

Tabarjal in facts and sources

Common questions about bitumen membrane in Tabarjal

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.