Bitumen membrane in Khafji: for companies (annual contract)
In short: Bitumen membrane (for companies (annual contract)) in Khafji starts with the roof, falls and drains survey, then the flood test, before anything is opened. The centre of Khafji sits about 9 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.
Bitumen membrane in Khafji: the local context
The centre of Khafji sits about 9 m above sea level (SRTM open elevation data). Khafji is about 2 km from the sea coast (OpenStreetMap).
Team note on Khafji: 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.. Main roads in or near Khafji: King Abdullah Road.
Khafji sits about 9 m above sea level, and its centre is roughly 2 km from the coast. For a company with a bitumen membrane under an annual contract, the first things checked are the roof and any below-grade slabs, because the site's position close to the sea means the membrane is exposed to salt-laden air and wide temperature swings throughout the year. Before any quote is firmed up, the technician confirms which surfaces are covered by the contract, since bitumen membrane is priced per square metre at SAR 15–35 per m², and a clear area measurement keeps the annual figure predictable.
Several points can only be settled at the site visit. The technician needs to walk the roof to judge the condition of the existing membrane, look for blistering, lifting edges and ponding water, and check how the drainage outlets and parapets are sealed. Where cracks run through the substrate, the crack injection rate of SAR 40–120 per metre may apply, and the length can only be measured in person. The visit is also the time to decide whether a related surface, such as a tank internal coating at SAR 25–60 per m², belongs in the same agreement, and to agree access times that suit the business's operations.
To help the technician prepare, the company should provide the building drawings or a rough plan showing roof areas, any plant equipment that must be worked around, and a record of previous repairs or leaks. It is useful to note where water has appeared in past seasons and whether any areas are used for storage or traffic, since foot traffic affects the choice of finish. Details of the roof's access route, the building's occupancy hours and any safety rules for working at height should also be shared in advance. With this information ready, the technician can plan the work efficiently and the annual schedule can be set with fewer surprises.
For companies, an annual contract sets the scope, the visit schedule and the reports in writing.
Signs worth paying attention to
If you notice one of these signs in Khafji, it is a good moment to talk to the team:
- A flat concrete roof that needs waterproofing
- Old rolls that are cracking
The most common causes
- A common cause: no protection layer.
- Seams that were not welded properly.
Tools we use in Khafji
| 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 |
The steps in order
- 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 Khafji
| Item | Value | Source |
|---|---|---|
| District profile | Khafji is about 2 km from the sea coast (OpenStreetMap) | © OpenStreetMap contributors (ODbL) |
| District profile | The centre of Khafji sits about 9 m above sea level (SRTM open elevation data) | SRTM (NASA) open data |
| Roads | Main roads in or near Khafji: King Abdullah Road | Kashf data (owner) |
| District profile | Team note on Khafji: 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 (Khafji) |
Questions from Khafji
Where does bitumen membrane (for companies (annual contract)) start in Khafji?
We start with preparation (cleaning, priming and repairs), then torch welding (overlaps are welded and checked).
What does bitumen membrane cost in Khafji?
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.
Mistakes that cost more
- Leaving the membrane exposed without protection
The written outputs
You receive: photos of the welds and the flood-test result, in a technical report with a verification code.
Practical notes for residents of Khafji
- 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).
- 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.
- Keep photos of the problem and of any earlier repairs — they help the technician compare before and after.
Sources and method
- SRTM (NASA) open data
- © OpenStreetMap contributors (ODbL)
- Kashf data (owner)
- Kashf team
- Owner price list for Khafji
- 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