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COLORBOND Corrugated Iron Roofing Sheets Corrugated Colorbond Diagram Corrugated Colorbond Weight Corrugated Iron Fasteners Diagram COLORBOND®

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COLORBOND® Corrugated roofing, 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 sheet? 

.48 BMT - which is thicker than the standard .42 bmt roof sheets

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

The actual single sheet width is 850mm wide. 

How long does delivery take?

Delivery takes approximately 3 - 4 days.


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 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.

Steel thickness - .48 BMT

Sheet cover - 762mm

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.






Roofing Sheets Perfect for Verandas



A veranda is a versatile outdoor space; it’s perfect for outdoor entertaining, relaxing, teatime, and all sorts of activities that are made more delightful by being carried out outdoors. This outdoor space is more useful if it has a durable cover that can shield furniture and people from weather elements. And speaking of such features, roofing sheets remain the most popular material, even if many are charmed by other options like retractable wave shades, sheer drapes, and tiles. If you need some ideas on what roofing sheets would be nice to use for your veranda, provided below are four examples: Flat and clear polycarbonate panels – Many love the sophisticated appearance of these roofing sheets because they make the veranda look like a delicate glasshouse. Illumination is never a problem if you go with this option. Likewise, you can enhance the look of these roofing sheets in a variety of ways. But perhaps, the coolest advantage you can get from these polycarbonate panels is the way you get a clear view of the sky while still remaining protected from natural elements like rain or snow – it’s a wonderful “inside-outside” experience. Translucent polycarbonate sheets – These come in a large variety of colours that can pop or blend with the colour scheme of your home. The nice thing about these roofing sheets is that they do let sunlight through but you won’t have to squint because it’s too bright. It’s worth pointing out as well that these are resistant to heat, snow, and rain – they are virtually unbreakable; therefore, they will last you many, many years. These are a little pricey though, so find a good vendor that offers them at discounted prices. Corrugated iron – Untreated corrugated iron is quite popular because of its rustic appeal. Also, it’s among the cheapest options for roofing sheets. They get really hot, however, so perhaps they’re more suitable for areas that don’t get much sunlight. If you would like your veranda to have a strong country charm, corrugated iron is a great choice — it will also look even more charming as it “ages.” White Colorbond roofing sheets – Apart from their neat appearance, white Colorbond roofing sheets provide the advantage of helping keep verandas cool on a hot day. Compared to other colours, white doesn’t absorb as much heat and it creates a more comfortable temperature in the space underneath it. Plus, it’s a nice colour to work with if you have all sorts of creative ideas to make your veranda truly visually appealing.


5 Ways to Prolong the Life of Your Corrugated Iron Roof


Roofs are not easily visible to the homeowners' eyes from where they stand, so it can take some time before they notice that the metal sheets require repair or replacement. Since roofs take a significant beating from the elements day in and day out, they can be expected to exhibit wear and tear after several months or years. It's important to subject the roof to regular inspections and maintenance measures to ensure that it is kept in good condition, and that your home stays well-protected. Here are some valuable care and maintenance tips that you can follow to prolong the life of your corrugated iron roof: Perform regular cleaning. This is perhaps the simplest way you can extend the life of metal roofing sheets. Perform routine cleaning so you can remove branches, leaves, stones, twigs, bird droppings, old nails and pieces of timber; leaving them lying on the roof leads to the creation of crevices and accelerated loss of coating in the areas between the debris and the roof. Keep the roof secure. Loose fixings may be further loosened by hard wind and rain. Make sure all sheets are screwed down. Replacing damaged sheets. If a roofing sheet is beyond saving with simple maintenance procedures, a replacement will be necessary. You need to consider factors like colour, materials, sheet length, profile, fastenings, and the availability and compatibility of materials to ensure that the replacement sheet is functional as well as a good match to the appearance of the original roof. You can consult your local roofing specialists about how well top brands like Colorbond and Zincalume sheets will work with your original roof and design scheme. Colorbond sheets, for example, are a good match if they will be used to replace an unpainted zinc roof (Zincalume may be too glossy to be a good match, and is not compatible with traditional lead flashings as corrosion will ensue when the two materials are combined). On the other hand, if you will be replacing everything (roofing sheets, gutters and downpipes), it's a good idea to use COLORBOND® for all of these roofing features for excellent performance.



The Ultimate Colorbond Roofing Technique to Help You Save More on Energy Bills




Keeping your home cool during summer and warm during winter does not solely depend on your HVAC systems. Your home’s roofing techniques also matter greatly when it comes to maintaining the temperature within your house. For many years, metal roofing has been offering home owners great benefits not only in terms of durability, but also when it comes to ease of installation and maintenance, fire-resistance and energy efficiency. While they may cost relatively more than other roofing materials, their advantages are incomparable. Metal roofs are so durable that they can last for 60 years or much longer with proper maintenance. Because of this, they also increase the value of your property. Metal roofs, such as Colorbond roofing offered by a trusted Australian bluescope steel supplier, make your home energy-efficient. Over the long term, you’ll be surprised by the amount of money you can save on energy bills. To help you reduce your energy consumption, metal roofs must be installed correctly. It is very crucial to secure the services of professionals to ensure proper implementation of roofing techniques like sarking or aluminum reflective roofing foil insulation. Sarking of metal roofs While Colorbond roofing provides protection against condensation, roofing professionals who have been in the metal roof industry for decades will tell you that the installation of a roof blanket or foil provides additional protection against heat and sound.  There are various techniques for roof insulation. Seasoned roofers these days recommend the reflective insulation or Sisalation, which has been known to provide savings on energy bills by as much as 25 percent. Unlike common types of insulation that either resist or slow down heat, reflective insulation reflects heat. This technique uses a thin blanket of aluminum and plastic substrate that allows the reflection of heat by as much as 97 percent and therefore prevents it from moving to other parts of the home such as walls and cracks. More appealing benefits of reflective insulation First, Sisalation roofing foil is generally much easier to install because it is lightweight. You can simply staple, glue or nail it onto the roof battens. Second, it effectively provides a barrier against moisture and humidity since it prevents condensation on the underside of the roof sheet. Third, it enhances a healthy atmosphere within your home as it inhibits the growth of moulds, fungi, and mildew. Fourth, this material is not suitable as a nesting ground for unwanted pests. This means you’ll have peace of mind dealing with insects and rodents and even birds that might nest on your roof. Finally, it is safe to use. The material is non-toxic and approved for use in homes with asthmatic residents.