Bitumen membrane for rest houses & farms in Qatif

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

Before we start: what we know about Qatif

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).

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..

Do rest houses and farms in Qatif really need a bitumen membrane, given how dry the desert air can feel? The short answer is yes, and the reason is geography. The centre of Qatif sits about 5 m above sea level, and the town is about 2.5 km from the sea coast. Low, flat ground close to the shore means groundwater and salt-laden moisture can work into roofs, walls and slabs, so a membrane is a practical layer of protection rather than an extra. Bitumen membrane is priced at SAR 15–35 per m², which sits between the liquid roof option at SAR 8–25 per m² and heavier systems such as basement waterproofing at SAR 50–150 per m².

Our inspection starts with a walk over the roof and the surrounding ground to look for ponding, cracked screeds, failed old sealant and any stains that show water has already travelled through. We then check the edges, parapets and drain outlets, since these are the places where membranes most often fail. Where the structure has visible cracks, we note them for separate treatment, because crack injection is priced per metre at SAR 40–120 per m and is usually done before the membrane goes on. For water tanks on the property, we check whether the internal surfaces also need attention, with tank internal coating at SAR 25–60 per m². The inspection ends with a written list of what was found and what is recommended, so you can decide the scope before any work begins.

To make the visit efficient, please clear access to the roof and the tank area, and tell us if the building has been repaired or re-roofed before, with any documents you have. It also helps to note where you have seen leaks, whether after rain or during watering season, and to have the approximate roof area measured in square metres so the estimate can be framed against the per-m² rates. If the property has insulation boards already in place, showing their location lets us check whether XPS boards, priced at SAR 12–30 per m², would sit correctly under the new membrane. Having these details ready means the visit can focus on the roof itself.

Rest houses and farms often have long buried lines, tanks and irrigation that need separate tests.

When do you need bitumen membrane?

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

• A common cause: 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

Common questions about bitumen membrane in Qatif

Common mistakes we see

• 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.