Bitumen membrane for schools in Jazan
In short: In Jazan (Jazan), bitumen membrane for schools begins with the roof, falls and drains survey and the flood test; nothing is opened until the position is clear. Jazan is about 1.9 km from the sea coast (OpenStreetMap). Pricing starts from Bitumen membrane (per m²) (SAR 15–35 per m²), and other items are quoted after the visit.
Bitumen membrane in Jazan: the local context
Jazan is about 1.9 km from the sea coast (OpenStreetMap). The centre of Jazan sits about 7 m above sea level (SRTM open elevation data).
Team note on Jazan: 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..
A school owner in Jazan often manages a large flat roof that must stay dry through heavy seasonal storms, and the budget for repairs is usually tight and shared among many decision-makers. The roof is exposed for long hours each day, and any leak can interrupt classes, damage ceilings and disrupt equipment stored below. Planning ahead means choosing a membrane that suits the building and the local conditions rather than waiting for water to appear on a classroom ceiling.
Jazan's centre sits about 7 m above sea level, and the city is roughly 1.9 km from the coast. That combination means the air carries salt and humidity, which can accelerate wear on exposed surfaces, while the site's modest elevation means rainwater must drain properly rather than pool. A bitumen membrane, priced at SAR 15–35 per m², is a practical option for flat school roofs in this setting, because it forms a continuous layer that handles standing water and shields the structure from moisture. Owners should compare this figure with liquid roof waterproofing at SAR 8–25 per m² and XPS boards at SAR 12–30 per m² before deciding which approach fits the roof's condition and access.
Start by inspecting the roof after the rainy season, marking cracks, ponding areas and damaged flashing around drains and parapets. Next, measure the total roof area in square metres so you can estimate the membrane cost across the full surface. Then ask for written quotes that state the per-square-metre rate, the preparation work and the drainage details, and confirm the schedule so that work can take place during school holidays. Finally, arrange a follow-up inspection after installation and record the date so the next check is not forgotten.
For schools, the larger jobs are planned for weekends and holidays.
Signs worth paying attention to
The following signs are worth checking before they grow:
- 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 we use in Jazan
| Method | What it helps with | Its role in Jazan |
|---|---|---|
| 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 |
From the first visit to the report
- 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.
Jazan in facts and sources
| Item | Value | Source |
|---|---|---|
| District profile | The centre of Jazan sits about 7 m above sea level (SRTM open elevation data) | SRTM (NASA) open data |
| District profile | Jazan is about 1.9 km from the sea coast (OpenStreetMap) | © OpenStreetMap contributors (ODbL) |
| District profile | Team note on Jazan: 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 (Jazan) |
Short answers for Jazan
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 Jazan?
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
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.
Planning the visit in Jazan
- 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.
- 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
- Owner price list for Jazan
- 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