Bitumen membrane in Jeddah: without breaking
In short: Bitumen membrane (without breaking) in Jeddah starts with the roof, falls and drains survey, then the flood test, before anything is opened. The centre of Jeddah sits about 15 m above sea level (SRTM open elevation data). Pricing starts from Bitumen membrane (per m²) (SAR 15–35 per m²), and other items are quoted after the visit.
What is specific about Jeddah for bitumen membrane
Team note on Jeddah: 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 Jeddah sits about 15 m above sea level (SRTM open elevation data).
Jeddah is about 2 km from the sea coast (OpenStreetMap).
Jeddah is a coastal city, and the centre of Jeddah sits about 15 m above sea level, so rainwater and groundwater behave differently here than they would on a flat inland site. The city is also about 2 km from the sea coast, which means the salty, humid air close to the shore can affect surfaces and fixings over time. For a bitumen membrane, this matters because the sheet has to bond firmly to a clean, dry, sound base, and the choice of primer and installation method should reflect the damp coastal environment rather than a generic dry-climate approach.
Because the centre of Jeddah is not at sea level, drainage on many roofs and podiums still has to be checked for falls and outlets, so that water moves off the membrane quickly after rain instead of pooling. The nearness of the coast means the same surfaces can carry a fine salt film, which we remove before priming so the membrane adheres properly. Where a roof is the main concern, bitumen membrane usually sits within the liquid roof waterproofing and XPS board options, and the choice depends on the slope, the access, and whether the roof is trafficked. Pricing for a bitumen membrane is typically SAR 15–35 per m², and that range reflects how much preparation the surface needs before the sheet goes down.
Owners often avoid a few common mistakes once these local conditions are understood. They do not lay the membrane over a damp or dusty screed, because trapped moisture causes blistering and weak bonds. They do not skip the upturns at walls and parapets, since water finds the edge first. They also do not treat a cracked substrate as a cosmetic issue; a crack that is left open will carry water straight under the membrane, and crack injection, priced at SAR 40–125 per metre, is the sensible fix before the sheet is applied. Finally, they do not choose the cheapest material without checking the base, because a good membrane on a poor surface will still fail early.
The aim is to locate the cause with instruments first, so any opening is limited to one point.
Signs worth paying attention to
These are the signs most often linked to bitumen membrane:
- A flat concrete roof that needs waterproofing
- Old rolls that are cracking
Causes we see in the field
- No protection layer.
- Seams that were not welded properly.
Tools and methods, and when we use them
| Tool or method | What it measures | Why it is chosen here |
|---|---|---|
| Roof, falls and drains survey | Ponding areas and the condition of the old layer | Limits: shows the condition, not the material alone |
| Flood test | Whether the waterproofing holds before it is covered | Limits: for roofs with drains and wet areas before tiling |
How the work is done, step by step
- Preparation: Cleaning, priming and repairs.
- Torch welding: Overlaps are welded and checked.
- Details: Upstands, drains and bases.
- Protection and flood test: Protection is laid after a successful flood test.
Jeddah in facts and sources
| Item | Value | Source |
|---|---|---|
| District profile | Team note on Jeddah: 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. | Kashf team |
| District profile | Jeddah is about 2 km from the sea coast (OpenStreetMap) | © OpenStreetMap contributors (ODbL) |
| District profile | The centre of Jeddah sits about 15 m above sea level (SRTM open elevation data) | SRTM (NASA) open data |
| Bitumen membrane (per m²) | SAR 15–35 per m² | Owner price list (Jeddah) |
Questions from Jeddah
Can I use household chemicals instead of calling a technician?
Using unsuitable chemicals may corrode pipes and does not fix the root cause of the blockage, so it is better to rely on a specialist technician.
What is the difference between foam insulation and other types of insulation?
Foam insulation is easy to apply on uneven surfaces and forms one continuous layer with no joints, while other types, such as bitumen rolls, need the joints to be welded. The contractor decides which is most suitable after inspecting the site.
Can thermal insulation be applied to an existing building?
Yes, thermal insulation can be installed on the roofs and walls of existing buildings without the need for major structural modifications. The contractor prepares the surface, then applies the insulating material and the protective layer over it.
Where does bitumen membrane (without breaking) start in Jeddah?
We start with preparation (cleaning, priming and repairs), then torch welding (overlaps are welded and checked).
What does bitumen membrane cost in Jeddah?
From our published price list: Bitumen membrane (per m²) SAR 15–35 per m². Quantities are confirmed at the inspection.
What do I receive after the work?
Photos of the welds and the flood-test result, in a technical report that carries a verification code.
Common mistakes we see
- 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.
Practical notes for residents of Jeddah
- You can message us on WhatsApp in English; the booking details are sent back to you in the chat to confirm before the visit.
- The Saudi weekend is Friday and Saturday; mention your preferred day and time when booking.
- Prices are in Saudi riyals (SAR); the final price is confirmed after the inspection, before any work starts.
- Have access ready to the water meter, the tank hatches, the roof and the main valve; in apartment buildings the roof keys are often with the building guard (haris).
Sources and method
- SRTM (NASA) open data
- © OpenStreetMap contributors (ODbL)
- Kashf team
- Customer questions (reviewed)
- Owner price list for Jeddah
- Local pages are published only after a quality gate: real local facts, text similarity of no more than 15% with any other English page, and a claims check.
- النسخة العربية