Pricing depends on thickness and sheet size. Laserlite Twinwall 6mm ranges from $41.00 to $266.00 incl. GST. Laserlite Twinwall 8mm ranges from $55.00 to $355.00 incl. GST.
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Polycarbonate Twinwall
Laserlite Twinwall Polycarbonate sheeting combines strength, insulation, and durability, making it an ideal solution for a wide range of residential and commercial applications. Available in 6mm and 8mm thicknesses, this high-quality double-wall polycarbonate is designed to withstand New Zealand’s demanding weather conditions while providing excellent impact resistance and thermal insulation.
Lightweight and easy to cut and install, Laserlite Twinwall is a popular choice for pergola roofing, skylights, greenhouse coverings, conservatories, and outdoor structures. Its twinwall design helps regulate temperature by reducing heat transfer, making it particularly well suited for greenhouses and areas where improved insulation is important.
Backed by a 15-year warranty, Laserlite Twinwall Polycarbonate offers reliable, long-lasting performance and outstanding value for your next roofing or glazing project.
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All of our pricing includes GST
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Laserlite Twinwall 8mm
Price range: $55.00 through $355.00 incl. GSTLaserlite Twinwall Polycarbonate Sheet with a 15 year warranty
Common uses
Twinwall's insulation properties make it well suited to greenhouse and hot house coverings, where temperature regulation matters. It's also used for pergola and patio roofing where extra thermal performance is wanted over single-wall polycarbonate, and for conservatory roofing where insulation and light transmission both matter. Its impact resistance also makes it a good fit for skylight applications in exposed or high-traffic areas.
Which Laserlite Twinwall thickness is right for you?
| 6mm | 8mm | |
|---|---|---|
| Warranty | 15 years | 15 years |
| UV protection | Both sides | Both sides |
| Recommended span | 600 to 700mm | 600 to 700mm |
| Temperature range | -20°C to 120°C | -20°C to 120°C |
| Best for | Pergolas, patios, smaller residential projects | Greenhouses, larger spans, applications needing extra insulation |
| Price range (incl. GST) | $41.00 to $266.00 | $55.00 to $355.00 |
Frequently Asked Questions
Twinwall polycarbonate is a dual-wall sheet with two layers connected by internal ribs, similar in principle to double glazing. This structure gives it strong insulation properties and over 200 times the impact resistance of glass, making it a popular choice for pergola roofing, skylights, greenhouse coverings, conservatories, and other outdoor structures.
Both thicknesses offer the same insulation and impact resistance benefits, backed by the same 15-year warranty. The 8mm option provides slightly greater rigidity and thermal performance, which suits larger spans or applications where extra insulation matters, such as greenhouses. The 6mm option is a lighter, more cost-effective choice for smaller residential projects like pergolas and patio covers.
Twinwall's dual-wall structure traps air between the layers, which reduces heat transfer and improves insulation compared to single-wall profiled sheets like corrugated or Greca polycarbonate. This makes it particularly well suited to greenhouses and any area where temperature regulation is important, alongside its strength and impact resistance.
We recommend spanning Laserlite Twinwall no more than 600 to 700mm across rafters or purlins. Spanning it wider than this risks the sheet sagging over time.
Cut twinwall with a straight edge and a Stanley knife. A saw tends to blow swarf into the internal flutes, which is harder to clean out and can affect performance.
Yes. Seal the open ends with anti-dust tape and polycarbonate capping. This keeps water, dust, and insects out of the internal flutes, since moisture getting into the flutes can affect the sheet's performance and appearance over time.
Laserlite Twinwall is UV protected on both sides, so it can be installed either side facing the sun. This makes it more forgiving to install than single-sided UV-coated sheeting.
No. Twinwall polycarbonate is not strong enough to support a person's weight, and you should never walk directly on it.
Laserlite Twinwall can withstand temperature fluctuations from -20°C to 120°C, and it must be stored indoors, out of the weather, before installation.
Yes, along its length. Across the width, the sheet is quite rigid, so you can't achieve much of a curve. Along the length, it's far more flexible and can be bent to a greater radius, which is useful for curved roofing applications.