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MATT COLORBOND® Steel Corrugated Iron Roofing & Walling .42 - Victoria Corrugated Colorbond Diagram Colorbond Matt Trimdek Roofing Sheets Matt Colorbond Colours

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COLORBOND® Steel MATT Corrugated Iron roofing & walling sheets: This simple, understated look of new COLORBOND® steel MATT makes it the perfect material to highlight the purity and essence of great design.

What is the corrugated iron sheet coverage?

762mm is the cover of the COLORBOND® Matt Corrugated Sheets. 

How thick is the steel?

.42 BMT is the steel thickness.

How long does delivery take?

Delivery on the Matt COLORBOND® sheets takes approx 3 - 4 days.  



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 Cladding in Corrugated Iron Sheet Profile

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.

What is the Steel thickness?  
.42 BMT is the standard thickness of our 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. 




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.

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).

Wall spans consider resistance to wind pressure only. 


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.

Why Choose Matt Colorbond from Metal Roofing Online

Colorbond Matt happens to be the most popular roofing material in the world due to its long life performance, versatility, and high quality. Colorbond Matt is suitable for both traditional and contemporary roofing projects. Regardless of the kind of roof you want to construct, this roofing product provides greater flexibility in both style and finish. Why buy Matt Colorbond Roofing from Metal Roofing Online? A wide variety - Colorbond Matt finish is available in various profiles, including the 'standing-seam' and 'corrugated' profiles. Lowest prices - Metal roofing online is a renowned supplier of best quality roofing products in Australia, specializing in amazing low prices of Matt Colorbond roofing and other products. With many years of experience in the roofing industry, we have what it takes to avail the roofing products you need to complete your roofing project at the lowest price possible. Fast delivery - Metal Roofing Online provides timely delivery of your Matt Colorbond roofing materials to any jobsite in Australia. We have a reliable fleet of delivery flatbed trucks, semi trailers and utes. We usually deliver within 3-4 working days for the Matt COLORBOND® range. Authentic products - Our Matt Colorbond roofing products are made from trusted Australian Bluescope Steel. All our roofing products have undergone rigorous testing to ensure they all exceed the Australian Building Code. This guarantees many decades of good performance even in the hardest conditions. We also offer our customers warranty to guarantee them peace of mind. Easy and secure online ordering - Through our website , customers can easily and conveniently place their orders without experiencing any difficulties. Besides, we take a number of credit cards or you can equally directly make deposits in our accounts. This saves you many hassles. Strong, durable, and energy efficient, Matt Colorbond roofing products from Metal Roofing Online deliver great and long-life performance. At Metal Online Roofing, we pride ourselves in our ability to offer elegant and stylish Matt Colorbond roofing products to enhance the overall look and feel of your home design.



Getting the Most Out of Colorbond Roofing




Colorbond roofing remains the top choice for both property owners and their roofing contractors. And it’s not so surprising, considering the roofing material's reputation and the benefits it offers. However, there are some customers who complain about the performance of their roof after installation. A great deal of these complaints can be attributed to a poor installation process. Here are a few key points that will help you get the most out of your roofing and prevent unnecessary problems. Transit and storage The roofing material should be kept dry during its transport and storage. Otherwise, moisture can wreak havoc on the metal roofing sheets, especially when these are stacked closely in bundles. The roofing sheets should be placed above ground, and when these get wet, these should be wiped immediately and allowed to dry. Use the right fastener Using the wrong fastener can facilitate premature corrosion and shorten the metal roof's lifespan. Colorbond recommends the use of fasteners that conform to AS 3566. Use neutral cure silicone sealants Gutters and downpipes facilitate the flow of rainwater from the roof toward the downspout. But even if the two do a good job of drawing water away from the roof, the presence of joints and laps can lead to leaks. This is why it is crucial to properly seal joints and laps. And when you are sealing these, you need to use a neutral cure silicone sealant. The wrong type of sealant can cause corrosion. Clean up after installation After cutting or piercing metal roofs, a debris called swarf is produced. Leaving swarf on metal roofing can lead to the formation of rust stains which can make it look unsightly. Ideally, swarf should be cleaned off the roof after each work day. Also, if there is a need to cut or pierce the metal roof, this task is best performed on the ground using a cold cutting saw. Install gutters and downpipes correctly Improper installation of gutters and downpipes can lead to pooling or the formation of ponds of water on the roof. Eventually, when this problem is not rectified, plants can grow on the roof. Use the right type of paint If you notice surface blemishes or fine scratches on the metal roof, avoid the temptation of touching up the roof using the wrong type of paint. Otherwise, you will compromise the performance and appearance of the roof. You can simply leave these blemishes and scratches as is without having to worry about the performance of your roof. Use the right cleaning materials Cleaning the roof properly can help prolong its lifespan. For your roofing needs, you can turn to Metal Roofing Online, a trusted BlueScope steel supplier. Order securely online. Fast delivery.