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COLORBOND® Roofing & Walling: Corrugated Iron "Cust Orb" .42 BMT

  ✔  The standard thickness of 0.42mm provides robust protection from Australia's climate while remaining lightweight for easy installation.

  ✔  Cover Width: 762mm coverage

  ✔  22 stunning colour options

  ✔  The minimum roof slope for Corrugated Roof and Wall Cladding is 5 degrees (1 in 12).

  ✔  A comprehensive warranty backs all COLORBOND® sheets, giving purchasers peace of mind that their roofing will withstand extreme weather for many years.

  ✔  Sheets are 100% Australian-made using COLORBOND® BlueScope steel, ensuring the highest production standards locally from manufacturing through delivery.

  ✔  Backed by a strong warranty and made from Australian steel, homeowners can feel confident in their COLORBOND® roofing investment with these quality products.


Please see the COLORBOND® colours HERE.


What is the estimated delivery time?

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


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

762mm (which allows for the 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.


Looking to confirm the width of our corrugated iron sheets?

The actual sheet width is 850mm.


Curious about the colour on the underside of our COLORBOND® corrugated iron sheets?

These sheets are vibrant on one side, while the underside resembles SHALE GREY and includes the distinguished "BlueScope COLORBOND" stamp. Take a look at our photo for a visual reference. Designed primarily for roofing applications where the underside won't be visible, these sheets offer exceptional durability and aesthetics from the top view. If you need double-sided sheets, we invite you to explore our HERE selection for your specific requirements.


Wondering which fasteners are best suited for installing your corrugated roofing sheets?

At Metal Roofing Online, we highly recommend using Class 4 screws for their exceptional durability in outdoor environments. Specifically designed for roofing applications, our Multifix screws are the ideal choice when securing your roofing iron to either timber or metal purlins. Not only do these screws offer superior strength and longevity, but they can also be colour-matched to seamlessly blend with your roofing sheets, ensuring a polished and cohesive finish for your project.

Sheet Tolerance: Length: + 10mm, – 15mm; Width: + 4mm, – 4mm. Make allowance for thermal expansion or contraction for long-length roofs at sheeting ends


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® Roofing and Walling: A Comprehensive Review

Is COLORBOND® Corrugated Roofing and Walling the right choice for you? Immediate advantages like its durability, an array of design options, installation simplicity, and cost savings make it a solid contender. This article cuts through the marketing to give you honest insights into why COLORBOND® might be a game-changer for your construction needs.

Key Takeaways

  • Corrugated roofing, made by BlueScope Steel, is highly valued for its robust design, compliance with Australian Standards, and offering a wide array of colour options, aesthetics, and durability tailored for diverse climates.

  • The material’s lightweight nature and its practical and innovative design contribute to COLORBOND® ease of installation and cost savings while offering a sustainable option with high recyclability and thermal efficiency through technologies like Thermatech®.

  • Corrugated roofing demonstrates superior resilience withstanding extreme weather and a competitive advantage in maintenance and long-term cost efficiency, offering better value than traditional roofing methods, with an average lifespan of 30 to 45 years.

Unveiling COLORBOND® Roofing – A First Look

A variety of COLORBOND® roofing sheets in different colors and profiles

A first glance at roofing sheets reveals a product with premium quality and diverse colour options. Crafted by BlueScope Steel, a company with over half a century of industry experience, COLORBOND® is more than just a roofing solution. It is an embodiment of endurance and efficiency, available in 22 diverse colours, and features thermally efficient options to suit Australia’s varied climates.

The robust design of COLORBOND® steel offers the following benefits:

  • Adheres to the rigorous Australian Standards AS 1397:2021 and AS/NZS 2728:2013

  • High quality, backed by BlueScope warranties

  • Durable and long-lasting

  • Aesthetically versatile

  • Innovative solutions for properties

These features make roofing sheets an attractive choice for discerning homeowners and builders.

However, these are just manufacturers’ claims. Let’s scrutinize them by examining the following aspects of COLORBOND® roofing:

  • Installation process

  • Architectural elegance

  • Practicality

  • Resilience

  • Thermal efficiency

Installation Insights of Corrugated Iron Roofing and Walling

Installing COLORBOND® requires careful attention to several steps, with a focus on safety. This involves:

  • Wearing safety gear

  • Using a harness

  • Clearing the area of obstacles

  • Handling materials as a team

As such, DIY installation of COLORBOND® is not recommended due to potential risks such as falls, which can lead to serious injury.

The six basic steps of COLORBOND® roofing installation include:

  1. Installing gutters

  2. Installing fascias

  3. Installing battens

  4. Installing sarking or roof blankets

  5. Installing the roof sheets

  6. Installing cappings

Finally, cleaning the roof is also an important step. Proper alignment of corrugated roofing sheets at the gutter end is crucial before securing them in place to ensure water flow and prevent leaking. Additionally, the installation of walling sheets can further enhance the overall structure.

After the roof’s installation, removing the swarf using tools like brooms or leaf blowers is necessary to avoid corrosion. This meticulous installation ensures the durability and efficiency of COLORBOND® roofing, living up to the brand’s promise of a reliable roofing solution.

Architectural Elegance and Material Integrity

Architectural building with COLORBOND® roofing in classic cream and woodland grey

One of the standout features of the roofing is its aesthetic versatility. With a wide array of colours and profiles that cater to diverse architectural styles and personal preferences, COLORBOND® roofing is more than just a protective layer for a building. It’s a design element that can enhance the overall look of buildings and increase a property’s value and curb appeal, making it more attractive to potential buyers or renters.

The design versatility of COLORBOND® roofing showcases BlueScope Steel’s innovative approach. The company has successfully combined architectural elegance with material integrity, resulting in a product that looks good and performs exceptionally well.

The colour options for roofing and wall cladding, showcasing an impressive roof colour range, are designed to match the Australian landscape, creating a harmonious blend between your property and its surroundings. Some of the available colours include:

  • Classic cream

  • Woodland grey

  • Cottage green

  • Manor red

  • Night sky

  • Shale grey

  • Deep ocean

This careful thought into the product’s design contributes to COLORBOND® roofing’s capacity to complement various property designs as the colour range evolved to suit diverse architectural styles.

Practicality Meets Innovation in Roofing and Wall Cladding

Apart from its aesthetic appeal, corrugated roofing stands out for its practical advantages over traditional roofing materials. A notable feature is its lightweight properties. Compared to traditional roofing materials such as tiles, COLORBOND® is significantly lighter.

Its reduced weight eases the load on building structures, potentially leading to construction benefits and cost savings. This is a prime illustration of how corrugated roofing marries practicality with innovation, marking a progressive step in other building material choices, including the use of corrugated iron, corrugated roof, and corrugated roofing.

These lightweight and cost-effective features of COLORBOND® corrugated iron illustrate why it’s becoming a preferred choice for many builders and homeowners. From smaller residential projects to large commercial buildings, COLORBOND® corrugated profile practicality and innovation make it a smart choice.

Real-World Resilience of COLORBOND® Roofs

Maintenance of COLORBOND® roofing in Australian conditions

In terms of real-world performance, COLORBOND® corrugated iron stands out for its remarkable resilience. It’s a coated steel roofing material known for its durability, including its resistance to:

  • Intense winds

  • Termites

  • Fire

  • Corrosion

  • Chipping

  • Peeling

  • Cracking

The resilience of corrugated roofing to extreme weather conditions contributes significantly to its long-life performance, often surpassing that of other roofing materials in similar environments. To preserve the long-term health of a COLORBOND® roof, regular professional inspections and maintenance are advised biennially, with more frequent attention required in harsh environments, such as coastal or alpine regions.

Maintaining COLORBOND® corrugated longevity involves preventative measures such as removing overhanging branches that pose a threat in strong winds and keeping gutters clear to avert drainage problems. These factors contribute to the real-world resilience of a corrugated roof, reinforcing its reputation as a reliable and durable roofing solution.

Thermal Efficiency and Environmental Impact

Thermally efficient light-colored COLORBOND® roofing reducing heat impact

A COLORBOND® corrugated roof offers several benefits:

  • Durability and aesthetic appeal

  • Thermal efficiency and energy savings

  • Environmentally friendly materials

  • Reflective properties and insulation capabilities

  • Incorporation of Thermatech® technology for improved energy efficiency

These features make colorbond corrugated COLORBOND® roofing and wall cladding a great choice for your home or building, especially when you need custom length options.

Moreover, COLORBOND® roofing is environmentally favourable due to its high recyclability, diminishing its long-term ecological footprint. Specialized variants such as COLORBOND® Ultra steel and COLORBOND® Coolmax® steel are tailored to specific environmental needs, enhancing the product’s sustainability profile.

With its high thermal efficiency and low environmental impact, a COLORBOND® roof sheet is at the forefront of sustainable roofing solutions. It’s a product that protects your property and contributes to a more sustainable future by utilizing thermally efficient light colours.

The Verdict on COLORBOND® Roofing

Comparison of COLORBOND® roofing with other roofing alternatives

Following an in-depth analysis, the compelling combination of durability, style, and performance that COLORBOND® roofing offers is clear. While the initial cost of a COLORBOND® roof sheet might be higher compared to some alternatives, its long-lasting durability, low maintenance, and benefits often justify the investment.

The average cost of installing a new COLORBOND® roof is approximately $20,000 plus GST, lower than the $25,000 plus GST for a new tiled roof while re-roofing with COLORBOND® is around $30,000 versus $35,000 for tiles. These costs, coupled with COLORBOND®’s lifespan between 30 to 45 years and lower long-term maintenance costs than traditional tiled roofs, make it a valuable investment.

All things considered, COLORBOND® roofing is a formidable competitor in the roofing market, recognized for providing durability, style, and performance. It’s a product that offers value for money and is a testament to BlueScope Steel’s commitment to quality and innovation.

In summary, COLORBOND® roofing is a high-quality, durable, and aesthetically versatile solution. It’s a product that considers the diverse needs of homeowners and builders, offering a wide array of colour options and styles to match various architectural designs.

Frequently Asked Questions

How much is colorbond roofing per lineal metre?

Colorbond in Australia costs around $16.90 per meter sheet, making it a suitable option to consider for your roofing budget.

How much does it cost for Colorbond?

Colorbond sheet prices range from $18 to $39 each, with the total cost for a new Colorbond roof typically falling between $9,000 and $30,000. It's a durable and quality choice for roofing.

What is cheaper, tile or colorbond roof?

Colorbond roofs are generally cheaper to install and require less maintenance but may need replacement sooner than tiled roofs.

How long does a COLORBOND® roof last?

A COLORBOND® roof can last 30 to 45 years with proper maintenance, making it a durable roofing option.

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