Sunlite 10 mm Twinwall Polycarbonate combines the transparency of glass with the strength and thermal efficiency of an insulated panel. Each sheet comprises two parallel walls joined by internal ribs, creating an air pocket that cuts heat transfer while keeping the weight low. Manufactured by Palram and stocked by Singh Roofing Supplies, Sunlite Twinwall delivers 250-times the impact resistance of glass, blocks 99.9 per cent of harmful UV and carries a ten-year warranty against loss of light transmission and hail breakage. Whether you are roofing a pergola or adding daylight to a façade, the sheet’s balance of clarity, toughness and energy performance makes it the professional choice.
Core specifications
Property | Value |
Thickness | 10 mm twinwall |
Sheet width | 980 mm (coverage) |
Standard lengths* | 1.0 m – 9.0 m (in 0.5 m or 1.0 m steps) |
Minimum roof pitch | 5° |
Max rafter spacing | 1000 mm |
End purlin span | 900 mm |
Mid-purlin span | 1200 mm |
*Sheets can be cut to exact length at point of purchase.
Colour range and light control
Colour | Light transmission | Solar heat reduction |
Clear | 80 % | Low |
Bronze | 35 % | Medium |
Opal | 30 % | High |
Grey | 20 % | High |
Solar Ice | 20 % | Very high |
Solar Control Grey | 25 % | Very high |
All tints utilise dual-sided UV protection to prevent yellowing and maintain clarity.
Performance advantages
- Thermal efficiency – twinwall structure improves insulation, helping outdoor rooms stay cooler in summer and warmer in winter.
- Impact toughness – resists hailstones and flying debris far better than acrylic or glass, making it ideal for exposed coastal or regional sites.
- Lightweight handling – at around 1.7 kg per square metre, one person can manoeuvre even long sheets, reducing install time and labour costs.
- Fire rating – self-extinguishing to AS 1530.3 for added safety in bush-fire zones.
- Chemical resistance – unaffected by common household cleaners and salty air, ensuring long service life with minimal maintenance.
Installation highlights
Sheets fix with aluminium H-joiners or complete glazing bar systems; no special tools are required beyond a fine-tooth circular saw and cordless driver. Always fit the anti-drip tape to the top edge and breather tape to the gutter edge to prevent condensation inside the flutes. A simple warm-water wash keeps the surface clear.
Typical applications
Pergolas, patio covers, verandahs, carports, skylight bands, greenhouse roofs, façade infills and privacy screens all benefit from Sunlite’s blend of high light transmission and robust weather performance.
Upgrade your next daylight project with Sunlite 10 mm Twinwall Polycarbonate from Singh Roofing Supplies. Order in cut-to-length sheets, match with the recommended joiners and enjoy a roof that looks bright, stays strong and lasts for years.