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COLORBOND® Roofing & Wall Cladding: Corrugated Iron "Custom Orb" .42 BMT

Key Features

  • Primary Use: Ideal for both domestic roofing and wall cladding applications.
  • Standard Thickness: 0.42mm, providing robust protection while remaining lightweight for easy installation.
  • Coverage: 762mm cover width.
  • Minimum Roof Slope: Suitable for slopes as low as 5 degrees (1 in 12).
  • Warranty: Backed by a comprehensive warranty, ensuring peace of mind against extreme weather conditions.
  • Australian Made: Manufactured using 100% Australian-made COLORBOND® BlueScope steel, guaranteeing high production standards and durability.
  • Customer Support: For assistance, contact our customer care team at 1300 886 944 or email us.

Additional Information

Discover the Benefits of COLORBOND® Roofing & Wall Cladding: Corrugated Iron "Custom Orb" .42 BMT

Durability and Strength

The standard thickness of 0.42mm offers robust protection from Australia’s climate while remaining lightweight for easy installation. All COLORBOND® sheets are backed by a comprehensive warranty, providing peace of mind that they will withstand extreme weather for many years.


Ideal for both domestic roofing and walling applications, COLORBOND® sheets offer robust protection and lightweight properties. They are suitable for various applications, including homes and commercial buildings.

Thermal Efficiency

With 22 stunning colour options, COLORBOND® sheets are designed to not only enhance the aesthetic appeal of homes but also improve thermal efficiency, keeping interiors cooler in summer and warmer in winter.

Easy Installation

The sheets are lightweight and easy to handle, making installation simple and efficient. The minimum roof slope for corrugated roofing and wall cladding is 5 degrees (1 in 12).

Australian Made

Manufactured using 100% Australian-made COLORBOND® BlueScope steel, ensuring the highest production standards locally from manufacturing through delivery. Homeowners can feel confident in their COLORBOND® roofing investment with these quality products.

Common Questions

What is the estimated delivery time?

The delivery timeframe is typically 4 to 7 working days, depending on location. We recommend refraining from scheduling installations until all products have been received on-site.

What is the sheet cover of the corrugated roofing & walling sheets?

The cover width is 762mm, allowing for a 1.5 rib overlap.

How much should I allow the COLORBOND® steel sheets to run into the gutter?

We recommend a 50mm overhang into a standard gutter.

What is the actual width of the corrugated iron sheets?

The actual sheet width is 850mm.

What colour is the underside of the COLORBOND® corrugated iron sheets?

These sheets are vibrant on one side, with the underside resembling SHALE GREY and featuring the "BlueScope COLORBOND" stamp. They are primarily designed for roofing applications where the underside is not visible. For double-sided sheets, explore our HERE selection.

Which fasteners are best for installing corrugated roofing sheets?

At Metal Roofing Online, we recommend using Class 4 screws for their exceptional durability in outdoor environments. Our Multifix screws are ideal for securing roofing iron to timber or metal purlins and can be colour-matched to your roofing sheets for a cohesive finish.

Sheet Tolerance

Length: +10mm, –15mm

Width: +4mm, –4mm

Make allowance for thermal expansion or contraction for long-length roofs at sheeting ends.

Quality Assurance

We use only the best 100% Australian steel, made from BlueScope Lysaght industry-leading brands such as COLORBOND® steel and ZINCALUME® steel. All our products are extensively performance-tested and backed by the strength of the BlueScope warranty, ensuring total confidence in their reliability.


We use only the best 100% Australian steel for 100% peace of mind, made from BlueScope Lysaght industry-leading brands such as COLORBOND® steel and ZINCALUME® steel. And, of course, all our products are extensively performance tested, backed with the strength of the BlueScope warranty and can be relied on with total and absolute confidence. 


Colorbond Roof Sheets Benefits

When it comes to choosing the right roofing for your house, corrugated roof sheets with a corrugated profile have the ultimate combination of practicality, design, durability, style and performance. Corrugated roofing is also easy to install and durable in any environment. Read on to find out more benefits of these roof sheets so you can make an informed decision for your project.

Colorbond Corrugated Roofing Sheets for Your Home

Imagine a roofing solution that not only looks great but also lasts forever. That’s what Colorbond delivers. Made with advanced technology, these roof sheets can withstand the toughest Australian conditions. Thermatech® paint technology in Colorbond sheets improves thermal efficiency so the inside of your home stays comfortable. BlueScope Steel, the inventor of Colorbond, has many patents so you get the latest technology. Colorbond sheets also accommodate thermal expansion so the sheeting and structure don’t move differently and cause problems.

Roof and Wall Cladding: Practicality Meets Style

Colorbond isn’t just for roofing; it’s also great for wall cladding. Whether you want to update the exterior of your home or add a feature to a new build, Colorbond wall cladding is durable and comes in many colours. From classic cream to deep ocean you can match the colour to any architectural style.

Thermally Efficient Light Colours: Stay Cooler

On hot days the colour of your roof can make a big difference to your home’s temperature. Colorbond’s thermally efficient light colours like shale grey and evening haze reflects more of the sun’s heat and keeps your home cooler and saves you energy costs. This innovative approach to roofing can make a big difference during our hot Australian summers.

Woodland Grey: Timeless

One of the most popular colours for a corrugated roof in the Colorbond range is woodland grey. Its neutral yet stylish colour is perfect for modern or traditional homes. Whether for roofing or walling sheets, woodland grey goes with many other building materials and adds style to your home.

Colour Range Evolved: Endless Options

The Colour Range has evolved over the years to include colours for every taste and style. From manor red to pale eucalypt, there’s a colour for everyone. The corrugated roof colour range is so extensive you can find a colour to match your home’s style whether you like bold or subtle colours like cottage green or classic cream.

Custom Lengths for Every Job

Every roofing and walling job is different and Colorbond accommodates this by offering custom lengths. This flexibility means you can get a perfect fit for your project whether you’re renovating a small cottage or building a large commercial building like the Adelaide Velodrome or Margaret Court Arena.

The Technology: Advanced and Proven

The technology behind Colorbond steel ensures long life and durability. To maintain this performance and structural integrity you need to follow the limits and guidelines for roof spans. BlueScope’s testing and many patents guarantee that Colorbond products perform well in any environment. Also, make sure to have a minimum roof slope of 5 degrees to avoid ponded water and ensure water-carrying capacity. This is why Colorbond is suitable for both residential and commercial applications.

Go Green

Choosing Colorbond steel is also good for the environment. The material’s long life and recyclability reduce the overall footprint of your building projects. This eco-friendly aspect makes Colorbond a responsible choice for environmentally-conscious homeowners and builders.

Makes Sense: Proven Performance for your Corrugated roof

With a proven track record of performance and reliability, corrugated iron roof sheets make sense for any job. Corrugated roofing sheets are easy and quick to install and are practical for many applications. Versatile and can withstand Australian conditions your investment will last the test of time. For domestic roofing applications it’s recommended to use specific types of insulation and sealants to control temperature, condensation and sound.

Order Online: Easy

Ready to add corrugated iron roof sheets to your home? Ordering online is easy. Visit our website, select your colours and custom lengths and order. Rest assured you’re getting quality products backed by BlueScope’s expertise and many patents.


From the durability of corrugated iron roof sheets to the versatility of walling cladding these products are designed to suit everyone. Full product benefits and guidelines for roof and wall cladding include application environment, handling and storage instructions and compatibility with adjacent materials. With a huge colour range and custom lengths, Colorbond steel is the number one choice for roofing and walling. Make sure to have a minimum roof slope of 5 degrees to avoid ponded water and ensure water-carrying capacity. Get into the technology and enjoy a cooler home with thermally efficient light colours. Make the smart choice for your next project and experience the difference of Colorbond.

Order your corrugated iron roof sheets online today and take the first step towards a more beautiful, durable, and efficient home.



Corrugated Roof Installation Example

Side lap fastening detail: Image via National Construction Code


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