Bitumen membrane in Unaizah: cost & published offers
In short: Bitumen membrane (cost & published offers) in Unaizah starts with the roof, falls and drains survey, then the flood test, before anything is opened. The centre of Unaizah sits about 667 m above sea level (SRTM open elevation data). Published price: Bitumen membrane (per m²), SAR 15–35 per m²; anything else is quoted after the inspection.
Why bitumen membrane differs in Unaizah
Team note on Unaizah: 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 Unaizah sits about 667 m above sea level (SRTM open elevation data).
Unaizah sits at about 667 m above sea level, according to SRTM open elevation data. That height matters for a waterproofing job. Sites at this elevation are more exposed to strong sun, large day-to-night temperature swings, and dry winds that can dry and crack surfaces quickly. Before a bitumen membrane is applied, the substrate needs to be sound, clean and fully cured, because rapid drying and heat can open small gaps in mortar and screed. Our crews check for hairline cracks and moisture before any membrane goes down.
The published range for bitumen membrane in Unaizah is SAR 15–35 per m². Where the price falls within that range depends on the condition of the roof, the number of upstands and drains to detail, and the access needed to reach the work area. A flat, open roof with a clean deck will sit near the lower end, while a roof with many penetrations, old failed layers to strip, or tight access will sit nearer the top. Owners who ask for a site visit receive a written breakdown that shows how these factors affect the total, so there are no surprises on the final invoice. The same logic applies to the other published rates on this site, such as liquid roof waterproofing at SAR 10–25 per m² and XPS boards at SAR 10–30 per m², which are often compared with bitumen when choosing a roof system.
Owners in Unaizah commonly make a few avoidable mistakes. The most frequent is choosing the lowest quote without checking what it covers, such as whether it includes primer, flashing at walls, and turn-ups at drains. Another is laying the membrane over a damp or dusty surface, which stops the layer from bonding and leads to blistering in the heat. Some owners also skip the upstand details where the roof meets walls, which is where water most often enters. Finally, many leave the roof without a maintenance check after the first year. Asking for a clear scope, a dry substrate, proper edge details and a simple inspection schedule prevents most of these problems.
Prices shown on this page come from our own published price list for the city; the final price is set after inspection.
When do you need bitumen membrane?
If you notice one of these signs in Unaizah, it is a good moment to talk to the team:
- 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.
- No protection layer — we check this before anything else.
Tools and methods, and when we use them
| Tool | What it finds | When we use it in Unaizah |
|---|---|---|
| Flood test | Whether the waterproofing holds before it is covered | Limits: for roofs with drains and wet areas before tiling |
| Roof, falls and drains survey | Ponding areas and the condition of the old layer | Limits: shows the condition, not the material alone |
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.
Quick comparison: facts and costs in Unaizah
| Item | Value | Source |
|---|---|---|
| District profile | The centre of Unaizah sits about 667 m above sea level (SRTM open elevation data) | SRTM (NASA) open data |
| District profile | Team note on Unaizah: 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 |
| Bitumen membrane (per m²) | SAR 15–35 per m² | Owner price list (Unaizah) |
Common questions about bitumen membrane in Unaizah
Where does bitumen membrane (cost & published offers) start in Unaizah?
We start with preparation (cleaning, priming and repairs), then torch welding (overlaps are welded and checked).
What does bitumen membrane cost in Unaizah?
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 receive
You receive: photos of the welds and the flood-test result, in a technical report with a verification code.
Practical notes for residents of Unaizah
- Keep photos of the problem and of any earlier repairs — they help the technician compare before and after.
- If you rent, tell your landlord or building management before the visit and agree in writing who pays; the written report can be shared with them.
- 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).
- Prices are in Saudi riyals (SAR); the final price is confirmed after the inspection, before any work starts.
Sources and method
- SRTM (NASA) open data
- Kashf team
- Owner price list for Unaizah
- 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