ASA UPVC ROOFING SHEET
ASA uPVC roofing sheets” are roofing panels made using
uPVC (unplasticized polyvinyl chloride) with a top/surface
layer of ASA (Acrylonitrile Styrene Acrylate) to enhance
performance. Here’s a detailed breakdown of what they are,
how they're made, and their advantages & potential drawbacks.
What is ASA + uPVC?
uPVC: A rigid form of PVC without plasticizers; durable,
resistant to chemicals, moisture, etc.
ASA: A type of engineering plastic / copolymer known for its excellent weatherability — especially resistance to UV radiation, fading, and environmental degradation.
When used together, the ASA usually forms a surface/top layer (coated or co-extruded) that protects the underlying uPVC against UV, weathering, and color fading. Some sheets are multi-layer (e.g. ASA layer on top, structural uPVC middle, possibly hybrid or insulating layers).
Key Properties / Advantages
From sources on ASA uPVC roofing sheets, these are the main selling points:
UV & Weather Resistance
The ASA layer helps resist UV degradation, so colour stays brighter longer. They resist fading and deterioration even under prolonged exposure to sunlight.
Colour Stability
Because of the protective ASA film, the surface maintains its colour, resisting yellowing or chalking.
Durability in Harsh Environments
Resistance to salt spray, acid/alkali, coastal corrosion, damp, high rainfall. These sheets are suitable for coastal, tropical, industrial environments.
Thermal Insulation & Heat Reflection
The uPVC underlayer provides insulation; the ASA surface helps reflect some solar radiation. This helps reduce interior heat gain.
Lightweight
Much lighter than many metal roofing or ceramic tiles. That makes fabrication & installation easier, less structural load.
Corrosion Resistance
Unlike metals, ASA-uPVC isn’t susceptible to rust, chemical corrosion etc. Useful in coastal or industrial settings.
Low Maintenance
Smooth surfaces (ASA) tend to self-clean (rain washes off dust/dirt), less moss/algae growth, fewer repairs.
Longevity
Many manufacturers claim lifespans of 20–30 years under good conditions.
Model R1050
| Width | 1050mm |
| Effective width | 960mm |
| Thickness | 2mm, 2.3mm, 2.5mm |
| Length | Customized (times of 219mm) |
| Height of wave | 28mm |
| Number of wave | 7pieces |
| Vertical overlap | 1 wave (90mm) |
| Horizontal overlap | 0.2 -0.3m |
| Composition | 5% ASA film, 51% PVC resin, 42% calcium carbonate, 2% pvc stabilizer and others |
| Purlin distance | 660mm/880mm |
| Quality warranty | 15 years |
UPVC Compared To Others
| Item | ASA+PVC | Clay | Steel | Cement |
|---|---|---|---|---|
| Color Stable | ✓ | x | x | x |
| Light weight | ✓ | x | x | x |
| Heat Insulation | ✓ | ✓ | x | ✓ |
| Anti-corrosion | ✓ | ✓ | x | ✓ |
| Anti-earthquake | ✓ | x | ✓ | x |
| Fire proof | ✓ | ✓ | ✓ | ✓ |
| Soundproof | ✓ | x | ✓ | ✓ |
| UV-resistant | ✓ | x | x | x |
UPVC Accessories
| Ridge tiles | Size: 1050×250×250mmAngle: 135°(suitable for rooftop 125°-150°) |
| Waterproof cap and Screw | 4 sets per square meter of roofing sheets |