Bitumen membrane for rest houses & farms in Jubail

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

Why bitumen membrane differs in Jubail

Team note on Jubail: 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.. Jubail is about 0.9 km from the sea coast (OpenStreetMap).

The centre of Jubail sits about 4 m above sea level (SRTM open elevation data).

An owner of a rest house or farm in Jubail usually has a flat or low-pitched roof, a water tank on the roof or ground, and a long summer of strong sun and heat that dries and cracks the surface. A weekend property may sit empty for days, so a small leak can run unnoticed until stains appear in the ceiling. For many owners the roof is the first place where protection matters, and a bitumen membrane is a common choice for this type of building.

The local facts shape that choice. The centre of Jubail sits about 4 m above sea level, which means the land is low and flat, so rainwater tends to pool rather than run off quickly. The town is also about 0.9 km from the sea coast, so salty air reaches the building and can affect exposed surfaces over time. Bitumen membrane for roofs typically costs SAR 15–35 per m², which places it in the middle of the range among the options on this site. Liquid roof waterproofing, at SAR 8–25 per m², is a lower-cost alternative for smaller areas, while spray foam at SAR 20–45 per m² is another option to weigh against your roof's condition.

A practical approach starts with a careful look at the roof. First, walk the surface after a rain and mark any ponding, cracks, or blistered areas. Second, have any cracks treated before the membrane goes down, since crack injection is priced at SAR 40–120 per metre and needs to be done first. Third, clean the surface and let it dry fully, because the membrane will not bond to dust or damp concrete. Fourth, if a water tank sits on the roof, check its internal condition too, as tank internal coating runs SAR 25–60 per m² and is often planned in the same visit. Finally, ask for the work to be scheduled for a dry, mild period, and keep a simple record of the area covered so future repairs are easier to plan.

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

When do you need bitumen membrane?

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.
• No protection layer.

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.

Jubail in facts and sources

Short answers for Jubail

What we advise against

• 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.