Horticultural Sheeting
Supreme Plastic Roofing specialise in a variety of polycarbonate, acrylic and fibreglass sheeting suitable for horticultural applications. We supply Sheeting suitable for Hot houses, Tunnel houses & Growing stations.
Whether you're running a commercial greenhouse or a backyard gardening setup, one thing is certain: the right covering makes all the difference. At Supreme Plastic Roofing, we supply high-quality polycarbonate, acrylic, and fibreglass sheeting designed specifically for horticultural use, helping growers create the perfect environment for plants to flourish.
Growing healthy plants isn't just about good soil and water. Light transmission, temperature control, and durability all play crucial roles. That's where quality sheeting comes in. Used in hot houses, tunnel houses, and growing stations, our sheeting materials provide optimal conditions year-round, regardless of climate challenges.
Let’s Break Down Some Options:
🌞 Polycarbonate Sheeting
Tough, lightweight, and virtually unbreakable, polycarbonate is a favorite in both commercial and personal growing spaces. Its UV protection and excellent light diffusion mean your plants get the sunlight they need—without overheating or burning. Our top picks for Polycarbonate options are Laserlite 2000 Twinwall & Calypso Corrugated & Greca. The laserlite 2000 Twin wall offers superior thermal insulation properties making it the number one choice for growing.
Best for: Tunnel houses, hot houses in high-wind areas, or any grower needing long-term durability.
🌱 Acrylic Sheeting
Known for its crystal-clear clarity, acrylic sheeting allows for maximum light transmission while maintaining strength and resistance to the elements. It's a great choice if you're looking to showcase plants or need superior light for specific crops. Its a great option for smaller growing stations or greenhouses. Our Astariglas and Crystalite Acrylic sheeting is perfect for any application. View our range here
Best for: Display greenhouses, aesthetic garden spaces, smaller structures and areas with moderate weather.
🌦️ Fibreglass Sheeting
Fibreglass offers a flexible, High strength option that’s resilient and easy to install. Its heavier weight provides strength and durability and works well in variable climates. Topglass Fibreglass comes in lengths up to 25m in length. Shop our range of Fibreglass profile sheeting here
Best for: large commercial growing stations, or structures where versatility and coverage are key.
Our Laserlite 2000 Twinwall Polycarbonate sheeting offers exceptional durability, insulation, and impact protection for a wide range of applications. Available in 6mm and 8mm thicknesses, this high grade Polycarbonate is made to withstand the harshest weather conditions. With a 15-year warranty, you can trust that Laserlite 2000 will deliver long-lasting performance and reliability. Twinwall Polycarbonate is light weight and easy to cut, it is Ideal for greenhouse coverings and Tunnel houses. Twinwall Polycarbonate is a fantastic choice for greenhouse coverings due to its thermal insulation properties.
Our high-quality polycarbonate profile sheeting is designed to be light weight, strong and versatile. All of our Polycarbonate profile sheeting is 99.9% UV resistant. Calypso & Calypso Ultra polycarbonate profile sheeting offers long-lasting protection against the elements while allowing optimal light transmission. Calypso & Calypso Ultra is super easy to work with making it an easy choice for greenhouse covers, Hothouses and growing boxes. Calypso & Calypso Ultra is available in Clear and Opal. For those growers that are wanting the light but not the heat then the Opal is ideal. The corrugated sheet has a width of 840mm with a coverage of 755mm and the greca has a width of 810mm with a coverage of 760mm both are 0.8mm thick. The sheet is available in lengths up to 7.2m and has a warranty of either 10 years or 25 years.
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Corrugated Polycarbonate Sheets
Calypso Corrugated Polycarbonate Sheet – 10 year warranty
Price range: $31.00 through $129.00 incl. GST -
Corrugated Polycarbonate Sheets
Calypso Ultra Corrugated Polycarbonate Sheet – 25 year warranty
Price range: $41.00 through $164.00 incl. GST -
Greca Polycarbonate Sheets
Calypso Greca Polycarbonate Sheet – 10 year warranty
Price range: $31.00 through $129.00 incl. GST -
Greca Polycarbonate Sheets
Calypso Ultra Greca Polycarbonate Sheet – 25 year warranty
Price range: $41.00 through $164.00 incl. GST
The Green house profile in Topglass Gelcoat Fibreglass is a fantastic option for those wanting to cover large areas. The sheet comes with the extra Gelcoat Film on the sheeting which offers exceptional resistance against corrosive atmosphere and provides protection against solar deterioration. Topglass comes in various profiles and widths, you can check out our full range here
Due to this sheet being fibreglass and manufactured in New Zealand we can manufacture this in any length you require up to 25m.
The Topglass Gelcoat has a comprehensive 25 year warranty and a 20 year visible light and solar transmission warranty.
The sheet is sold by the lineal Metre.
The Astarglas acrylic clear is a good alternative for glass, it is lighter, safer and cheaper than glass.
The clear sheet offers a 30 year warranty and comes in a variety of thicknesses.
The 4.5mm sheet is one of our most popular with clients replacing glass and 4mm Twinwall hothouses.
If you are requiring a longer sheet then the Crystalite Clear Acrylic comes in lengths up to 6m with two great colours, either the clear or, for those wanting a reduction in heat but still letting in plenty of light, the diffused.
The Crystalite sheet offers a great 15 year warranty.
Environmental considerations for your site
Where you're growing matters as much as what you're growing. In coastal or exposed sites, Topglass Gelcoat fibreglass holds up particularly well, since it's built to resist the corrosive effects of salt air without the yellowing or degradation that affects lower-grade GRP sheeting. In high-wind areas, Laserlite Twinwall is a strong choice, backed by its impact resistance and thermal stability across a wide temperature range. If your site gets sharp overnight temperature drops, Twinwall's insulating air gap helps buffer plants against frost compared to a single-layer sheet. For sheltered, low-wind sites where appearance and light quality matter more than raw durability, acrylic sheeting is a good fit without needing to over-engineer for conditions you won't face.
Which material suits your growing space?
| Material | Best for | Key benefit | Warranty |
|---|---|---|---|
| Laserlite Twinwall | Tunnel houses, hot houses, high-wind areas | Superior thermal insulation | 15 years |
| Calypso / Calypso Ultra Corrugated & Greca | Greenhouse covers, hothouses, growing boxes | Clear or Opal for light without heat | 10 or 25 years |
| Astariglas / Crystalite Acrylic | Display greenhouses, smaller growing stations | Maximum light clarity | 15 to 30 years, depending on product |
| Topglass Gelcoat Fibreglass | Large commercial growing structures | Custom lengths up to 25m, corrosion resistance | 25 years, 20 years on light transmission |
Frequently Asked Questions
It depends on your structure and priorities. Laserlite Twinwall polycarbonate is the top choice for thermal insulation, making it well suited to tunnel houses and hot houses in high-wind areas. Astariglas or Crystalite acrylic suits smaller growing stations or display greenhouses where light clarity matters most. Topglass Gelcoat fibreglass suits large commercial growing structures needing wide coverage and long-term durability.
Polycarbonate is tough, lightweight, and virtually unbreakable, with UV protection and light diffusion that lets plants get sunlight without overheating. Acrylic offers crystal-clear light transmission and strength, suited to smaller structures or crops needing maximum light. Fibreglass is heavier and higher strength, offering flexibility and durability across variable climates, and suits large commercial growing stations.
Laserlite Twinwall comes in 6mm and 8mm thicknesses, both backed by a 15-year warranty. Both offer strong thermal insulation for greenhouse coverings and tunnel houses, with 8mm suited to larger spans or where extra insulation matters most.
Calypso and Calypso Ultra corrugated and Greca polycarbonate are available in Clear and Opal for horticultural use. Clear maximises light transmission, while Opal is ideal if you want the light without the heat, useful for crops sensitive to overheating.
Laserlite Twinwall 6mm ranges from $41.00 to $266.00 incl. GST. Laserlite Twinwall 8mm ranges from $55.00 to $355.00 incl. GST.
Topglass Gelcoat carries a comprehensive 25-year warranty, along with a 20-year warranty on visible light and solar transmission.
Yes. Because Topglass fibreglass is manufactured in New Zealand, it can be made to any length required, up to 25m, and is sold by the lineal metre.
Astariglas clear acrylic is a lighter, safer, and cheaper alternative to glass, backed by a 30-year warranty. The 4.5mm thickness is one of the most popular choices for clients replacing glass or 4mm twinwall hothouses. For longer sheet runs, Crystalite clear acrylic comes in lengths up to 6m, with a 15-year warranty.
Yes. Crystalite Diffused acrylic reduces heat while still allowing plenty of light through, alongside the standard Clear option.
Fibreglass, particularly Topglass Gelcoat, tends to suit large commercial growing stations best, since it offers custom lengths up to 25m and a heavier, more durable build. Polycarbonate twinwall is a strong alternative where thermal insulation is the priority over sheer coverage area.