Bitumen membrane for schools in Aljumum
In short: In Aljumum (Aljumum), bitumen membrane for schools begins with the roof, falls and drains survey and the flood test; nothing is opened until the position is clear. The centre of Aljumum sits about 200 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.
Why bitumen membrane differs in Aljumum
Team note on Aljumum: 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 Aljumum sits about 200 m above sea level (SRTM open elevation data).
Bitumen membrane work for schools in Aljumum starts with a look at the roof itself, because the site sits about 200 m above sea level and that elevation shapes how water moves across flat and low-slope roofs. Before any membrane is priced, the technician checks drainage outlets, upstands, and existing laps, since these are where water is most likely to find a way under a finished surface. Bitumen membrane for roofs is quoted at SAR 15–35 per m², and the actual figure depends on what the first inspection reveals, so the opening check is what sets the scope rather than the rate alone.
Several points can only be settled at the site visit. The technician needs to see the condition of the substrate, whether any patches of blistering or ponding exist, and how the roof edges and parapets are finished. Access arrangements matter too, because school buildings run during term and work often has to fit around classes, deliveries, and safety zones. The visit is also where the team decides whether a different system suits a particular section of the roof better, such as liquid roof waterproofing at SAR 8–25 per m² for lighter areas, or whether a cracked area needs crack injection at SAR 40–120 per m before any new layer goes on. Anything of this kind is confirmed on the ground rather than assumed from a desk estimate.
For the technician, it helps to know the building's history before arriving. Record any previous repairs, the age of the existing covering, and any leaks reported by staff, and note whether the roof is accessible by a fixed ladder or needs equipment. If the school also has a water tank on the roof, tank internal coating at SAR 25–60 per m² may be relevant to the same visit. Bring a note of the roof area measurements and photograph the drainage points so the scope can be agreed quickly.
For schools, the larger jobs are planned for weekends and holidays.
Signs that call for bitumen membrane
These are the signs most often linked to bitumen membrane:
- Old rolls that are cracking
- A flat concrete roof that needs waterproofing
Causes we see in the field
- Seams that were not welded properly — we check this before anything else.
- A common cause: no protection layer.
Tools we use in Aljumum
| Method | What it helps with | Its role in Aljumum |
|---|---|---|
| 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.
Facts and costs — Aljumum
| Item | Value | Source |
|---|---|---|
| District profile | The centre of Aljumum sits about 200 m above sea level (SRTM open elevation data) | SRTM (NASA) open data |
| District profile | Team note on Aljumum: 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 (Aljumum) |
Questions from Aljumum
What is the first step of bitumen membrane for schools?
We start with preparation (cleaning, priming and repairs), then torch welding (overlaps are welded and checked).
How much does bitumen membrane cost in Aljumum?
From our published price list: Bitumen membrane (per m²) SAR 15–35 per m². Quantities are confirmed at the inspection.
What do I get at the end?
Photos of the welds and the flood-test result, in a technical report that carries a verification code.
What we advise against
- Leaving the membrane exposed without protection
The written outputs
The written output: photos of the welds and the flood-test result. The report is numbered and can be checked with its verification code.
Planning the visit in Aljumum
- The Saudi weekend is Friday and Saturday; mention your preferred day and time when booking.
- You can message us on WhatsApp in English; the booking details are sent back to you in the chat to confirm before the visit.
- 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
- Kashf team
- Owner price list for Aljumum
- 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