Supreme Plastic Roofing Buying Guide

Choosing the right plastic roofing for your project

Choosing the right roofing product can be confusing, especially with different materials, profiles, colours and warranty options available. This guide will help you compare our most popular roofing products and choose the best solution for your pergola, carport, conservatory, greenhouse, or commercial project.

Why Quality Matters

Not all plastic roofing products are manufactured to the same standard. While lower-cost imported plastic roofing sheets can appear similar, differences in raw materials, UV protection, manufacturing quality and warranty support can significantly affect long-term performance.

At Supreme Plastic Roofing, we supply only trusted plastic roofing brands that are specifically designed for New Zealand conditions and backed by genuine manufacturer warranties. This means better UV resistance, reduced risk of yellowing, better long term durability.

What plastic roofing material is right for my project?

Polycarbonate Roofing

Polycarbonate roofing is our most popular roofing material thanks to its strength, lightweight design, UV protection, and affordability. It is ideal for pergolas, carports, patios, outdoor entertaining areas and general residential roofing applications. Polycarbonate is also ideal for architects and installers looking specifically for a fire rated material. Polycarbonate is naturally flame-retardant and highly fire-resistant making it the better choice over Acrylic for commercial builds or where building consent is needed.

Best for:

  • Pergolas
  • Carports
  • Patios
  • Outdoor living areas
  • General residential roofing
  • Commercial builds

Polycarbonate roofing product page

Acrylic Roofing

Acrylic roofing offers exceptional clarity and a premium appearance. It is often chosen for high-end pergolas, conservatories, skylights and architectural projects where appearance is just as important as performance. Acrylic is the first choice for residential applications where customers are seeking a flat glass like appearance.

Best for:

  • Premium pergolas
  • Conservatories
  • Skylights
  • Architectural projects

Acrylic product page

Twin wall Polycarbonate

Twin wall polycarbonate provides improved insulation compared to standard profile sheeting and flat acrylic sheeting, making it ideal for greenhouses, conservatories and enclosed outdoor spaces.

Best for:

  • Greenhouses - Excellent at  retaining heat to extend the growing season.
  • Conservatories
  • Enclosed outdoor areas
  • Projects requiring improved insulation

Twin wall product page

Fibreglass (GRP) Roofing

Commercial-grade fibreglass roofing is designed for industrial, commercial, agricultural and horticultural applications where strength, durability and natural light are required. Engineered to perform in harsh New Zealand conditions, providing excellent resistance to UV exposure and atmospheric pollutants. Unlike standard fibreglass roofing products, it is designed to minimise yellowing and long-term degradation, helping maintain clarity and performance over time.

Best for:

  • Warehouses
  • Factories
  • Farm buildings
  • Commercial projects
  • Horticultural applications

Fibreglass roofing product page

Acrylic vs Polycarbonate Flat Roofing

Both acrylic and polycarbonate are excellent roofing materials, but each has different strengths.

Choose Acrylic If:

  • You want maximum clarity.
  • Appearance is a priority.
  • You're building a premium pergola or conservatory.
  • You prefer a glass-like finish.

Choose Polycarbonate If:

  • Impact resistance is important.
  • You want the most durable option.
  • The project is exposed to severe weather conditions or you need a material that is fire rated

Summary:
Acrylic generally offers superior clarity and appearance holding its clarity for far longer than polycarbonate. Polycarbonate provides greater impact resistance and durability.

  • Polycarbonate Flat Sheet UV 2 sides
    Flat Sheet

    Polycarbonate Flat Sheet UV 2 sides

     Price range: $89.00 through $1,169.00 incl. GST View Product This product has multiple variants. The options may be chosen on the product page
  • Astariglas® Acrylic Sheet
    Flat Acrylic Sheets

    Astariglas® Acrylic Sheet

     Price range: $110.00 through $1,193.00 incl. GST View Product This product has multiple variants. The options may be chosen on the product page
  • Crystalite Acrylic Sheet
    Flat Acrylic Sheets

    Crystalite Acrylic Sheet

     Price range: $205.00 through $495.00 incl. GST View Product This product has multiple variants. The options may be chosen on the product page
  • Astariglas® Eco Cast Acrylic
    Flat Acrylic Sheets

    Astariglas® Eco Cast Acrylic

     Price range: $151.00 through $773.00 incl. GST View Product This product has multiple variants. The options may be chosen on the product page

Corrugated vs Greca vs 5 Rib Roofing Profiles

Before choosing a roofing brand, you'll first need to choose the profile that best suits your project.

Corrugated

The most common and traditional roofing profile (matches with corrugated iron roofing) Corrugated is light weight, easy to install and cost effective.

Best for:

  • Pergolas
  • Carports
  • Residential projects
  • Existing corrugated structures

Greca

A modern square profile similar to Corrugated. Greca offers slightly improved rigidity over corrugated, it is light weight, easy to install and cost effective.

Best for:

  • Contemporary pergolas
  • Residential projects
  • Modern outdoor areas
  • Architectural projects

5 Rib (Trimdek)

A commercial-style profile designed to match 5 Rib and Trimdek metal roofing.

Best for:

  • Residential projects
  • Carports
  • Existing 5 Rib roofs needing to match with existing metal roofing
  • Sheds
  • Modern residential projects

Calypso vs Calypso Ultra vs Laserlite Polycarbonate

All three products are manufactured from high-quality polycarbonate and provide excellent UV protection and long-term performance.

Calypso

A reliable and cost-effective polycarbonate roofing solution suitable for most residential applications.

  • Great value
  • Residential applications
  • Popular colours and profiles
  • 10-year warranty

Calypso Ultra

A premium version of Calypso designed for enhanced durability and long-term performance.

  • Enhanced durability
  • Improved weather performance
  • Popular colours and profiles
  • 25-year warranty

Laserlite Polycarbonate

One of the most trusted brands of polycarbonate roofing on the market designed for enhanced durability and long-term performance

  • Enhanced durability
  • Improved weather performance
  • Popular colours and profiles
  • 25-year warranty

Best Roofing for Pergolas?

For most pergola projects, we recommend:

1. Polycarbonate Roofing (profiled)
The best all-round solution for durability, affordability and ease of installation.

2. Acrylic Roofing
Ideal for customers wanting a premium glass like appearance and exceptional clarity. Often requires longer installation and additional fixings - structure must be built to suit

3. Twinwall Polycarbonate
Best suited to pergolas where additional insulation is required.

The right choice will depend on your budget and desired appearance

Need Help Choosing?

With over 30 years of experience supplying Plastic roofing products throughout New Zealand, our
team can help you choose the right plastic roofing solution for your project.
Contact us for expert advice on profiles, materials, colours, warranties and installation
requirements or Check out our gallery for ideas!

Contact us

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