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COLORBOND Corrugated Iron Roofing Sheets Corrugated Colorbond Diagram Corrugated Colorbond Weight Corrugated Iron Fasteners Diagram COLORBOND® Underside of colorbond

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COLORBOND® Corrugated roofing (Custom Orb), with improved technology and manufactured from the highest quality Bluescope Steel, is now the smart choice when considering your roofing or walling requirements.

What is the steel thickness of this corrugated iron roofing & walling sheet? 

.48 BMT - which is thicker than the standard .42 bmt roof sheets
The thicker 0.48 BMT grade. BMT stands for Base Metal Thickness which is the thickness of the steel before the Zincalume protective layer is applied and the Colorbond paint layer is added. These sheets are stronger than the standard .42bmt.

What is the Corrugated Iron sheet cover? 

762mm is the cover width which allows for 1.5 rib overlap. The actual single sheet width of the corrugated sheet is 850mm wide. 

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

How long does delivery take?

Delivery takes approximately 4 - 5 working days once the order has been placed, depending on location. 


Which fasteners do I use for the corrugated iron?

Here at Metal Roofing Online, we only use and recommend Class 4 screws when installing your roof sheeting as they last considerably longer in the elements. In a standard roofing application, when fixing to either timber or metal purlins, we have in our range a Multifix screw which is the perfect choice for this roofing iron.


We use only the best 100% Australian steel for 100% peace of mind; made from BlueScope’s industry-leading brands such as COLORBOND® 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. 


Purchase COLORBOND® Roofing and wall cladding in Corrugated Iron Sheet Profile

Please note this is the .48 BMT thickness sheet.  Please see further listings if you require t standard .42 BMT sheet.

Among the world’s most popular metal roofing products due to its high quality and versatility. These corrugated iron roofing panels, which are also known as Custom Orb, are suitable for traditional and contemporary roofing projects alike.

General Info

COLORBOND® roof and cladding sheets are available in a wide array of different colours to match absolutely any building project and is made in Australia using BlueScope steel. Corrugated COLORBOND® is one of the most durable, long-lasting roofing materials available and it’s virtually maintenance-free. Made from hi-tensile steel this profile whilst strong, is also lightweight which minimises sheet damage.

Corrugated sheeting is pierce fixed which ensures easy fixing by the conventional method. To ensure maximum weather protection our Corrugated has a 1.5 rib overlap. The wide cover (762mm) allows for quick installation, saving on both materials and labour. This versatile profile can be used on a minimum roof pitch of 5 degrees.

Here at Metal Roofing Online, we only use and recommend Class 4 screws when installing your roof sheeting as they last considerably longer in the elements. In a standard roofing application, when fixing to either timber or metal purlins, we have in our range a Multifix screw which is the perfect choice for this roofing iron.

When using the corrugated iron sheet in a wall cladding application, there is choice between 12 gauge x 25 mm timber fix screws, when fixing into timber. Othewise, 10 gauge x 16mm will do the trick when fixing into steel.These screws are shorter as they are fixed into the pan (or valley) of the corrugation. "Cover of roofing sheet" : is the measured amount each sheet will cover (including side lap) when layed in position on the roof. IE the cover of a corrugated roof sheet is 760mm or .76 metre. Please consider both resistance to wind pressure and foot traffic for roofing spans. 

Please consider a couple of factors when deciding whether you need .42bmt or .48bmt sheets as roof covering:

Your batten spacing & How often the roof will be walked upon
The maximum recommended support spacings are based on testing in accordance with AS1562.1-1992, AS4040.1-1992 and AS4040.2-1992.

Roof spans consider both resistance to wind pressure and light roof traffic (traffic arising from incidental maintenance).


Maximum Support Spacings (mm)
Types of Span BMT (mm)
0.42 0.48
Single Span 700 800
End Span 900 1300
Internal Span 1200 1700
Unstiffened Eaves Overhang 200 250
Stiffened Eaves Overhang 300 350
Single Span 1800 1800
End Span 2500 2700
Internal Span 2700 2700
Overhang 200 250

For roofs: the data are based on foot-traffic loading.
Walling Sheet spans - please consider wind pressure only.




COLORBOND® Roofing Sheets


An innovative, versatile, roof and wall cladding solution.

If you are looking for high quality and smart cladding for your property, these Corrugated Iron metal roofing sheets offer a durable and distinctive finish. They are incredibly versatile and easily trimmed and customised for a range of commercial, industrial and residential projects. The ribs defect weather and assist in conducting water away from the buildings and keep these metal sheets robust yet lightweight. 

This product is delivered in long lengths for maximum utility, with the metal sheets providing coverage from ridge to gutter. The metal sheets also align and overlap readily for cladding. 

Multiple colour-ways to enhance your property's exterior.

Corrugated Iron Colorbond steel roof sheets are manufactured in a range of high quality, rich pigment colours which are tested in the extremes of Australian weather for superb and demonstrable longevity. 

Colorbond sheets are grouped in 5 key colour-ways, inspired by Australia:

  • Matt finish
  • Ultra
  • Classic
  • Fencing
  • Contemporary

Choose among contemporary hues which created a coordinated and stylish finish when combined with other Colorbond products and the rest of your property's exterior decor. Your colour finish is corrosion resistant and designed to be cleaned with water for easy long-term maintenance. 

Fine Australian quality and manufacture as standard with trusted Australian Bluescope roofing.

For over 50 years Colorbond has been used by Australian homeowners and businesses and the demand shows no signs of slowing. These premium metal roofing sheets are fabricated with quality, 100% Australian steel and are engineered for superior structural and thermal efficiency. 5 layers of protection from steel base to topcoat paint are designed to deliver superior protection for your property. In addition, Colorbond steel roofing is fire resistant and compliant for use in bush fire zones. Every unit is delivered with a generous warranty, backed by the manufacturer, Bluescope Steel and authenticated with branded packaging and ink branding on each sheet's underside.  All roofing sheets are offered at the lowest prices with FAST delivery. Simply order online or call our customer assistance team to place your order.



The choice of roofing materials, especially the iron, plays a critical role in the outcome of the procedure. Apart from the aesthetics, homeowners, and owners of other types of properties need to focus on the quality of the iron sheets with particular reference to durability. Manufactured from the highest quality BlueScope Steel, not forgetting the incorporation of improved technology, Colorbond corrugated iron is your safest bet as far as your roofing or walling requirements are concerned. 

Some of the benefits of using Colorbond corrugated iron from Metalroofingonline.com.au include;

i.  The steel thickness of the corrugated iron sheet is thicker (.48 BMT) compared to the standard thickness of.42 BMT. However, if you are interested in the latter, it is also available. ii.  The sheet covers measures 762 mm and in turn allowing a 1.5 rib overlap. The actual width of a single sheet is 850 mm. 

Other incredible benefits that you wouldn't€™t want to miss out include; Fast Delivery: How soon do you want your Colorbond Corrugated iron sheets? Metal Roofing Online boasts of unbeatable turnaround time. Delivery usually takes between a maximum of three or four days. We understand that time is of the essence when developing a property, and as such, wouldn't€™t want to be a part of the delay elements. Lowest Prices Besides delivering top-notch products in terms of quality, we also guarantee affordability. For instance, the .48 BMT Colorbond Roofing Corrugated Iron Sheets go for $15.90 inclusive of GST. On the other hand, the .42 BMT Colorbond Roofing Corrugated Iron Sheets go for $13.20 inclusive of GST. Online Ordering Made Easy and Secure For You Our customers may make payments using one of our three methods, namely PayPal, Visa or MasterCard. Take advantage of the video availed to you on the ordering page to help locate your desired colour. From there, fill in the information required such as colour choice, quantity, the length of the sheets, as well as the shipping address. Trusted BlueScope Steel Roofing Metalroofingonline.com.au only uses Australian BlueScope Steel“ ZINCALUME and COLORBOND backed by BlueScope Steel warranties. Thanks to our compliance with all the relevant Australian Standards, our existing and prospective customers can rest easy and not worry about the quality of the iron sheets. At Metalroofingonline.com.au, we give you the opportunity to shop online from the comfort of your home or office, so that you can attend to other important matters.