Bitumen membrane in Qatif: with a verifiable technical report

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

What is specific about Qatif for bitumen membrane

Team note on Qatif: 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.. Qatif is about 2.5 km from the sea coast (OpenStreetMap).

The centre of Qatif sits about 5 m above sea level (SRTM open elevation data).

Qatif sits on low ground close to the Gulf, with the centre about 5 m above sea level according to SRTM open elevation data, and the town lies roughly 2.5 km from the sea coast. For a bitumen membrane job, this combination matters. Low elevation and nearness to the coast mean that groundwater and moisture can sit close to foundations and roof slabs, so water that finds a route into a structure tends to stay there. A bitumen membrane has to be fully bonded, lapped correctly and taken up walls and upstands properly, because any gap gives moisture a path that is hard to dry out in a humid coastal climate.

Each of these facts shapes how the work is planned. Because the ground is low, we check drainage and the level of the surrounding ground before the membrane goes down, and we recommend that the surface is sound, clean and dry before application. Because the site is close to the coast, we pay attention to salt-laden air and to the condition of existing finishes, which can hide damp that the membrane needs to be bonded against. For bitumen membrane work in Qatif, the typical price range is SAR 15–35 per m², and the final figure depends on the area, the substrate and the access. Where a basement or tank is involved, related services such as basement waterproofing at SAR 50–150 per m², tank internal coating at SAR 25–60 per m², or crack injection at SAR 40–120 per m may be needed alongside the membrane.

Owners often make the same avoidable mistakes. They skip the survey and apply membrane over cracked or dusty concrete, so the bond fails within the first wet season. They cut corners at laps, corners and pipe penetrations, where most leaks begin. They also treat the membrane as a cover for a drainage problem rather than solving the water source first. Ask for a written scope that names the membrane system, the preparation steps and the areas covered, and confirm that upstands and edges are included in the quote. Keeping the surface protected after installation, and keeping a record of the work, will make any later inspection far simpler.

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

Signs worth paying attention to

The following signs are worth checking before they grow:

• 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.

How we choose the tool in Qatif

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.

Qatif in facts and sources

Questions from Qatif

Common mistakes we see

• Leaving the membrane exposed without protection

What you receive

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