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COLORBOND Roofing Corrugated Iron

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.48 BMT Sheets - The base metal thickness of  these corrugated iron sheets are thicker than the standard .42 BMT. 

BRISBANE COLORBOND® Corrugated Iron Sheets are among the world’s most popular metal roofing materials due to its high quality.

Delivery takes approx 3 - 4 working days. 

Purchase COLORBOND® Corrugated Roofing & Wall Cladding - Queensland 

What is the Steel thickness?  
.48 BMT is the thickness of these Australian Made BlueScope Steel sheets. 

What is the sheet cover - 
762mm (which allows for the 1.5 rib overlap)

How much should I allow for the sheets to run into the gutter?
We recommend 50mm overhang into a standard gutter.

What is the ACTUAL sheet width? 
The actual sheet width of corrugated iron is 850mm.  

Which fasteners do I use for installing the roofing sheets?
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. These are able to colour matched to your sheets. 


COLORBOND® Corrugated Iron Roof Sheets are among the world’s most popular metal roofing materials 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. The Colorbond corrugated iron is made in Australia using Bluescope steel.

Colorbond roofing materials are available in a wide array of different colours to match absolutely any building project. Moreover, the Sheeting 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 iron 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 fixing roofing 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.

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).

Wall spans consider resistance to wind pressure only. To view full limit state wind pressure capacity tables please download CUSTOM ORB® and CUSTOM BLUE ORB® (1516 KB).

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.



Factors That Give Colorbond Roofing Its Superior Quality

Colorbond steel is a popular building material not only in Australia, but in other countries as well. When it comes to your roofing needs, Colorbond is the right choice for you if you’re after the best value for your money. What gives Colorbond roofing the excellent quality that it is known for? • Twenty-two designer colour palette vis-à-vis advanced paint technology – This means that your roof can look better for much longer. This combination of gorgeous colour choices and the baked-on paint finish is a winner, creating beautiful and durable roofs. It resists chipping, cracking, and peeling, which means Colorbond steel is a perfect material not only for roofing, but guttering, walling, fencing, and other applications as well. Activate Technology – Colorbond steel introduced this leading coating technology, which enhances the protective coating of its substrate, making the material one of the world’s most robust options for various building needs. It’s not only a matter of durability. Activate Technology also makes Colorbond the sustainable choice. The increased lifespan contributes to the greenness of the product, but more than that, the brand also uses fewer metal resources, which all in all creates a smaller environmental footprint than other roofing sheets in the market. • Thermatech Technology – Being green is good, but being cost-efficient makes it even better. This technology works to reduce your home’s energy load. You can be comfortable without relying so heavily on air-conditioning. Ultimately, it also reduces your utility bills. • Trials and tests – The long lifespan of Colorbond roofing can be attributed to the tests the brand has conducted and continues to carry out to ensure that the material can withstand Australia’s harshest and toughest conditions. The manufacturer has testing sites throughout the country, making sure that its product is ideal for homes across Australia. For instance, Colorbond has Ultra Steel and its Stainless lines, which make great roofing for coastal and industrial areas. The colour palette, of course, provides excellent choices for each of the different regions. • Warranties – BlueScope offers greater warranty periods for Colorbond steel, thanks to the superior performance and increased lifespan that Activate Technology delivers. This is a very reassuring guarantee. It is evident that BlueScope has worked hard to bring to the market an exceptional building material and the above are just some of the elements that contribute to the level of quality Colorbond has.

Advantages of Corrugated iron Roofing




In recent years, the corrugated iron roof has changed significantly. In the past, when corrugated iron was mainly used for buildings in industry and agriculture, today more and more private individuals are choosing a roof made of corrugated iron. Outbuildings such as carports, garden sheds, barns and garages are commonly clad with corrugated sheets. Corrugated sheets are suitable here for both the wall and the roof cladding. Now, metal roofs for private homes and other buildings are increasingly on the rise. For a corrugated iron roof, aspects such as price, durability and durability speak for themselves. However, when installing corrugated iron, there is a lot to consider. When installing a corrugated iron roof, it is important to perfectly integrate chimneys, ventilations and skylights into the roof. If care is not taken, water may penetrate and damage the roof. In the construction of a corrugated iron roof also plays the appropriate substructure an important role. Before starting to install the corrugated iron, the substructure must be inspected for any faults. If the substrate is not stable and the individual corrugated sheets are not installed correctly, the sheets may become loose and holes may be formed. When installing corrugated iron, it is important to check if the roof can support the extra weight. Ideally, you will be advised and discussed by a professional construction planner. how the corrugated iron roof must be designed to withstand the wind load of the region. Corrugated metal roof - the look must be right. In the case of a corrugated iron roof, the main thing is the correct installation and a convincing result. The roof must be tight and reliable against wind and moisture. But also the demands on the optics are high today. Therefore, the following points should be considered:- Choose colour consistent corrugated sheets for the roof. Pay attention to matching, high-quality accessories corrugated sheets are produced exactly to customer specifications. Various profiles and colours are available. Discover the large variety of corrugated sheets.