× HOME (current)
Please select State:
1300 886 944 LOGIN 0


We are currently experiencing courier (ie parcels, not roofing deliveries) delays in VIC & NSW. Thank you for your patience!  

  • 0


Item removed. Undo

Where are you shopping for today?

Delivery State:

Please note: item availability may change.
COLORBOND Corrugated Iron Roofing Sheets Corrugated Colorbond Diagram Corrugated Colorbond Weight Corrugated Iron Fasteners Diagram COLORBOND® Underside of colorbond

Please select a state in the header.

Please select a state in the header.


With upgraded technology and the best quality Bluescope Steel, COLORBOND® Corrugated roofing (Custom Orb) is now the obvious 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. Thus, the actual single sheet width of the corrugated sheet is 850mm wide. 

Sheet Tolerance: 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 3 - 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. However, 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.





Top 5 Reasons Why Colorbond Roofing Is The Choice Of Australian Builders 

Australian real estate is thriving because, as recent reports show, foreigners have been directing their investments toward the country. Chinese businessmen and immigrants actually comprise a large share of the buyers this year, and they’re in a hurry to build commercial buildings and homes to make their investment useful as soon as possible. Most of them are learning, though, that building in the Land Down Under presents different conditions, and the country’s unique weather is always a major consideration. Cheap materials just wouldn’t last long in Oz; to secure the integrity of the structures these investors need to build, they’re turning to the country’s most sought-after builders who build according to the natural climate and know the most durable materials to use.

When it comes to roofing that is perfectly compatible with the harsh Aussie climate, the country’s top builders swear by Colorbond roofing. All Colorbond roofing products have been tested multiple times to ensure quality and versatility. Also worth noting is that Colorbond offers such an extensive selection of roofing products with different features that not only aim to create a completely safe structure, but also to provide the best building convenience to installers and comfort for dwellers. 

Other than those, builders pick BlueScope’s Colorbond roofing for other reasons, and their top five are listed below.

  1. The brand offers a great range of materials and design profiles. From the traditional corrugated iron such as Lysaght’s Custom Orb, to polycarbonate roofing in 5 Rib design, it certainly won’t be hard to find the roofing sheets that would fit the design of the structure to be built.
  2. Whatever roofing design people opt for, they will surely find the right accessories to ensure maximum durability and minimise the need for frequent maintenance.
  3. The sheets are easy to cut according to the demand of the structure’s design. Metal Roofing Online offers sheet cutting services so customers can easily have the appropriate size of roofing sheet they need.
  4. Colorbond roofing products are available all over the country — even small hardware stores carry them, making purchasing them so much easier.
  5. To provide added convenience to buyers, Colorbond roofing can actually be purchased online. There are trusted online distributors or sellers that have shops all over Australia and they make sure that everything their customers need will be supplied by their stores. Plus, through these sites, buyers can get really good deals, from flexible delivery arrangements to the budget-friendliest prices. Best of all, these online suppliers provide the same warranty.


In Australia, Colorbond steel roofing is a proven, durable and versatile roofing material that is used in many types of buildings including homes, offices and industrial buildings of all sizes. Colorbond metal roofing, manufactured by Trusted Australian BlueScope Steel, is based on Zincalume steel which has a zinc and aluminum coating to provide anti-corrosion protection. 

The standard range of colours comprises of 20 different colours including grays, blues, and greens.The durability and toughness of Colorbond roofing materials make it a popular choice in both urban and rural areas of Australia. In particular, corrugated metal roofing is a common sight on homes and residences. 

There are various reasons to support the predicament that indeed Colorbond products are excellent products that will not only add beauty to your newly constructed home. These products are guaranteed to give you the strength and longevity you are always looking for in construction materials.

This, in turn, provides their customers with the highest quality of service at the lowest price. In addition, their services can be purchased online as they come for the work in your place.In summary, using Colorbond for corrugated steel roofing is a popular choice in Australia.