Bitumen membrane in Allith: cost & published offers
In short: In Allith (Allith), bitumen membrane (cost & published offers) begins with the roof, falls and drains survey and the flood test; nothing is opened until the position is clear. Allith is about 1.2 km from the sea coast (OpenStreetMap). Published price: Bitumen membrane (per m²), SAR 15–35 per m²; anything else is quoted after the inspection.
Bitumen membrane in Allith: the local context
Allith is about 1.2 km from the sea coast (OpenStreetMap). The centre of Allith sits about 5 m above sea level (SRTM open elevation data).
Main roads in or near Allith: Al Laith Road, Amr Bin Al Aas Street.
Bitumen membrane is one of the most common waterproofing solutions for flat roofs and podiums in Allith, and the most frequent problem we see with it is blistering and lifting at the laps and edges, usually caused by trapped moisture or poor adhesion to the substrate. Membranes that look sound from above can still fail where the sheets overlap or meet upstands, so the quality of surface preparation and detailing matters as much as the material itself. Water that gets under the membrane tends to spread quietly until a leak appears inside the building, which is why early inspection is worth the effort.
Allith sits about 5 m above sea level and roughly 1.2 km from the coast. That combination means roofs here are exposed to salty, humid air drifting in from the sea, which can accelerate surface wear and make it harder for adhesives to bond properly on a damp or contaminated substrate. Because the site is so close to the coast, we pay particular attention to drying the surface thoroughly before any bitumen is applied and to checking that edges and penetrations are sealed against wind-driven moisture. The low elevation also means that rainwater should drain freely off the roof, so the falls and outlets are checked as part of the approach rather than treated as an afterthought.
Before the visit, ask for a clear breakdown of what the bitumen membrane price covers, including the membrane itself at SAR 15–35 per m², surface preparation, detailing at upstands and drains, and any repair work to existing cracks. Ask whether the quote is per square metre of finished roof and how the area was measured. Confirm how the surface will be checked for moisture before application and what warranty terms, if any, are offered in writing. It also helps to mention any existing blisters, ponding or previous leaks so the inspection can focus on those spots from the start.
Prices shown on this page come from our own published price list for the city; the final price is set after inspection.
Signs that call for bitumen membrane
The following signs are worth checking before they grow:
- Old rolls that are cracking
- A flat concrete roof that needs waterproofing
The most common causes
- Seams that were not welded properly — we check this before anything else.
- No protection layer.
Tools we use in Allith
| Tool | What it finds | When we use it in Allith |
|---|---|---|
| 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.
Quick comparison: facts and costs in Allith
| Item | Value | Source |
|---|---|---|
| District profile | The centre of Allith sits about 5 m above sea level (SRTM open elevation data) | SRTM (NASA) open data |
| District profile | Allith is about 1.2 km from the sea coast (OpenStreetMap) | © OpenStreetMap contributors (ODbL) |
| Roads | Main roads in or near Allith: Al Laith Road, Amr Bin Al Aas Street | Kashf data (owner) |
| Bitumen membrane (per m²) | SAR 15–35 per m² | Owner price list (Allith) |
Questions from Allith
What is the first step of bitumen membrane (cost & published offers)?
We start with preparation (cleaning, priming and repairs), then torch welding (overlaps are welded and checked).
How much does bitumen membrane cost in Allith?
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.
Common mistakes we see
- Leaving the membrane exposed without protection
What you receive
The written output: photos of the welds and the flood-test result. The report is numbered and can be checked with its verification code.
Practical notes for residents of Allith
- 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 data (owner)
- Owner price list for Allith
- 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