COLORSTEEL MAXX® Steel Roof & Wall Cladding

Specifically developed to withstand higher atmospheric salt concentrations, the COLORSTEEL Maxx® paint system consists of an AZ200 Zincalume® steel substrate to which a multi coat paint system is applied. COLORSTEEL Maxx® is designed to provide protection against corrosion in areas where severe to very severe environmental conditions are experienced, such as New Zealand’s rugged coastline. The COLORSTEEL Maxx® paint system will exceed the service life of most traditional post painted systems.

Available in a range of colours and profiles, COLORSTEEL Maxx® can be used to suit any home or building.

COLORSTEEL Maxx® pre-painted steel is available from most roofing distributors. Use our nation wide database to find the perfect supplier for your project. 

  • Category
    Metal Roofing, Metal Cladding


COLORSTEEL Maxx® pre-painted steel products are suitable for a wide range of roll-formed roof and wall claddings, rainwater accessories and general building products.

Key Features:

  • Specifically developed to withstand higher atmospheric salt concentrations, COLORSTEEL Maxx® is ideal in very severe building environments
  • Incredibly resistant to corrosion.
  • A 3-layer organic coating consisting of an anti-corrosive and bonding pre-treatment layer, an anti-corrosive primer and a top coat, applied to both sides of the material
  • COLORSTEEL® paint technology provides exceptional resistance to chalking and fade
  • Receives Environmental Choice certification
  • Environmental Product Declaration available
  • Genuine COLORSTEEL Maxx® pre-painted steel product is identified by branding applied to the reverse surface, indicating product type and date of manufacture.
  • Available in a range of colours and profiles to suit any home or building

Note: When designing your home, consider which profile is appropriate - each profile has a minimum pitch below which it should not be installed and certain profiles are only suitable for certain applications. Discuss your requirements with the designer or contact your local roll-former for further information.

Performance Attributes:


  • COLORSTEEL Maxx® is available in various top coat colours. The standard backer is Perpetual Grey®, but is also available with a double-sided coating to suit customer’s needs.
  • Colour retention (CIE Lab units Delta E) is 8 units maximum after 10 years exposure, and 10 units maximum after 15 years exposure. Chalk rating (AS 1580:481.1.11:1998) is no more than 4 after 10 years exposure.
  • Solar reflectance and light reflectance values vary with colour, refer to COLORSTEEL® Light Reflectance brochure for details.

Fire Resistance:

  • COLORSTEEL Maxx® is rated as a Group 1-S material and has an average specific extinction area of 107.0m²/kg, a peak heat release rate of 15.3 kW/m² and total heat released of 0.44 MJ/m² when tested in accordance with ISO 5660:2002 Part 1 and Part 2.

 Drinking Water:

  • COLORSTEEL Maxx® samples tested in accordance with AS/NZS 4020:2005 passed the requirements for products in contact with drinking water.
  • The first 25 mm of rainfall from a newly installed roof must be discarded before drinking water collection starts.


  • Steel substrate may be either G300 or G550 consistent with AS 1397:2011
  • Metallic coating is consistent with AS 1397:2011
  • COLORSTEEL Maxx® is Product Type 6 consistent with AS/NZS 2728:2013
  • Tolerances are consistent with the requirements of AS/NZS 1365:1996
Guidelines for Use

Limitations of Use:

COLORSTEEL Maxx® products are not recommended for the following applications:

  • Intensive animal shelters, where the build-up of alkaline fumes may occur
  • Swimming Pools, and other structures with continually wet internal environments
  • Buildings with harsh internal environments such as galvanising plants, tanneries and meat works
  • Fertiliser works
  • Embedded in concrete
  • In contact with soil, bark or similar
  • Geothermal areas

Before using COLORSTEEL Maxx® products in these environments please consult us for a recommendation on 0800 697 833 or

Copper or brass pipes must not be allowed to discharge onto or come into contact with COLORSTEEL® pre-painted steel products. The use of other materials in proximity to COLORSTEEL Maxx® must be carefully considered – the COLORSTEEL® Incompatible Materials bulletin should be used as reference. 

The mixing of COLORSTEEL® brands, such as Endura® and Maxx®, between accessory feed and roof cladding is acceptable where appropriate. However, mixing with other brands of pre-painted materials on the same building is not recommended. 

Handling & Storage:

If COLORSTEEL® pre-painted steel products are to be stored for any time prior to forming or installation, they must be stored in dry, well ventilated conditions. Storage which allows water (including condensation) to be trapped between the sheets may damage the coating beyond repair. COLORSTEEL Maxx® pre-painted steel products must be handled carefully during transport, fabrication and fixing to avoid damaging the surface.

Warranty and Maintenance


COLORSTEEL Maxx® is warranted in very severe environments for roofing, wall cladding, spouting and fascia. Please refer to New Zealand Steel's Environmental Categories, Warranty and Product Maintenance Recommendations brochure for further information.

When you order your COLORSTEEL® pre-painted steel roof or rainwater products, remember to request your COLORSTEEL® warranty from your supplier.


Areas of COLORSTEEL Maxx® pre-painted steel not regularly washed with rain water, such as wall claddings, must be routinely washed to remove surface deposits to ensure satisfactory life is obtained from the product. Check guttering and downpipes regularly and remove any debris which may lead to ponding or flooding. Always wear soft soled shoes when walking on COLORSTEEL® pre-painted steel surfaces to avoid causing damage. For maintenance recommendations on specific individual environmental categories, please refer to the COLORSTEEL® Maintenance brochure.

Get in touch
If you can’t find what you’re looking for, get in touch, and we’ll get back to you as soon as possible.
Visit Website

About the

  • Products listed
  • Recent Responsiveness


    Usually responds within
    2 days on weekdays

COLORSTEEL® is made, tested and trusted for New Zealand conditions. We are inspired by the colours and landscapes that surround us and, in turn, we strive to create products that will inspire you. For more inspiration, visit

To learn more about the winning projects and professionals celebrated at our recent COLORSTEEL® Awards 2023, click here.

Our story started over 40 years ago when New Zealand Steel began making COLORSTEEL® roof and wall cladding products from New Zealand iron sand. It was a world first, and a feat that required imagination, ingenuity and sheer determination. 

These qualities have become COLORSTEEL® pillars - it’s who we are and how we work. 

For New Zealand:
We’re inspired by the landscape around us. From snow topped mountains to tussock grasslands, you’ll see New Zealand reflected in everything we create.

COLORSTEEL® products also undergo intense, long-term colour performance and exposure testing. So you can be sure they’re made and trusted for our conditions. We’re so confident in the durability of our products, we back them with robust warranties.

For you:
We’ve developed COLORSTEEL® products to meet the needs of New Zealanders. Whether it’s roofing your dream home, building a fence or cladding a warehouse– there’s a COLORSTEEL® solution for your project.

By combining beauty, durability and flexibility, we believe COLORSTEEL® is about more than just a steel solution - it’s about turning metal into magic and transforming the everyday.

For the environment:
All COLORSTEEL® solutions carry the Environmental Choice NZ licence which means they can contribute to the achievement of maximum points in Homestar and Green Star materials credits with NZ Green Building Council.