× 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® TRIMDEK® Roofing Sheets .42 - Victoria Trimdek Diagram Trimdek Weight Trimdek Fasteners Application Underside of colorbond Trimdek Cover Table

Please select a state in the header.

Please select a state in the header.


Purchase TRIMDEK COLORBOND® Roof Sheets - for use on a roof pitch of 2° or greater.


Order online, contact our customer care team on 1300 886 944 or email.  


This COLORBOND® steel Lysaght metal roofing profile is a long-spanning cladding permitting wide support spacing & is a versatile, strong yet lightweight profile.

What is the sheet cover?
The cover width is 762mm. The actual sheet width is 820mm.


What is the steel thickness?
.42 BMT is the standard thickness of our BlueScope Lysaght Steel sheets. A thicker .48 BMT COLORBOND Trimdek sheet is also available. 


Sheet Tolerance: Length: + 0mm, – 15mm; Width: + 4mm, – 4mm Make allowance for thermal expansion or contraction for long length roofs at sheeting ends


Which fasteners do I use for installing the roofing sheets?
Here at Metal Roofing Online, we only use and recommend 12 x 65 timber fix fasteners when installing your roof sheeting as they last considerably longer in the elements. These are able to colour match your sheets. 



How long does delivery take?

Delivery takes approximately 3 - 6 working days once the order has been placed, depending on location. 


How much should I allow into the gutter?

It is usual to allow metal roofing sheets to overlap into gutters by about 50mm. If the roof pitch is less than 25° or extreme weather is expected, the pans of sheets should be turned down at lower ends, and turned up at upper ends by about 80°. Turn your Trimdek Sheets up or down using this Trimdek Tool



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. 


Also known as: Trimclad, Superdek and Monoclad COLORBOND® steel Trimdek Lysaght roofing sheets are used on roofs with a minimum of 2 degree of fall or greater.  It is screw down metal deck roofing iron, which makes it very easy to install. These roofing sheets are a cost effective alternative to Klip-Lok roofing sheets. It sits well in both domestic and commercial applications.

Your home is likely to be your biggest financial investment and your largest asset. Having a BlueScope warranty covering the important steel building products in and around your home is an investment in peace of mind. COLORBOND® steel is developed for, and therefore more resilient to, the severe sunlight and temperatures typical of Australian environments. BlueScope scientists have tested COLORBOND® steel in some of Australia’s harshest climates. 

Rest assured that COLORBOND® steel is guaranteed to meet relevant Australian standards. Make sure you look for the brand as not all painted steel is genuine COLORBOND® steel.


Recommended Fastening Method

When fixing into timber battens, we recommend a 12 gauge x 65mm Type 17 Hex Head screw. If fixing into steel purlins, please use a 12 gauge x 55mm Steel Fix Hex Head screw. When using the sheets as wall cladding, a 12 gauge x 25mm Type 17 Hex Head should be used for timber battens and for steel purlins, a 10 gauge x 16mm Steel Fix Hex Head screw is best.


Trimdek, in particular, pertains to square-fluted steel cladding that is available in long lengths. This means that one sheet can be used from ridge to gutter without having any end laps. Trimdek is remarkably strong (it can easily recover from deformation), it has excellent spanning capacity, it is lightweight, and it is properly rigid. And of course, it is available in a wide variety of colours that Colorbond roofing steel is well known for — earthy colours that reflect Australia's distinct landscapes. Keep in mind that your house needs as much care and attention as its other features do. By choosing the best materials, like Trimdek roofing, your home can truly show your neighbourhood what a stunning mix of beauty and function truly looks like.



Having high-quality roofing is one of the best ways to ensure the quality of your home. Getting such roofing material is only possible if you use a reputable and reliable supplier. The colorbond roofing is  strong and durable and can be used on a wide range of properties. Their stylish nature makes them appealing to the eyes which means that whatever property you use them on, you'll achieve the modern look without struggling. Metal roofing online is the best company to get your trimdek from. They have the highest quality products with the excellent customer service.

The company also prioritises customer satisfaction. This is why they have the lowest prices and fast delivery. The affordability of their products doesn't affect its quality. They ensure to give their customers the best roofing products that will last a long time and as such, ensure that their clients get value for money. They are efficient with the delivery. Although the delivery process differs from every location, you can be sure that your roofing will get to you usually within 4 business days.

Another reason why ordering your roofing from this company is a good idea is their easy and secure online ordering. Security is usually one of the common concerns with online purchases but this company ensures that your details remain safe. They also ensure that you get the exact product that you ordered when you want it. Ordering Trimdek from this company is a good investment. You end up with a roof that can withstand the harshest weather without degrading or breaking down. Your roof will remain strong throughout the seasons ensuring that you don't spend more on repairs or replacements.

Being a reputable company is an added advantage that you should take advantage of. They have been in business for a long time and have gained a good reputation to become suppliers of Trusted Australian BlueScope Steel roofing. They not only supply you with the roofing materials, but they can also do the installation for you. The high level of professionalism allows them to give you the best services that are bound to make your roof the centre of attraction. If you decide to do the installation yourself, they will give you professional advice that will make the process simpler for you.

Conclusion: Apart from the high-quality colorbond roofing, the company also has high-quality roofing accessories. Everything ranging from the screws to the closure strips is made with utmost precision and will ensure that you get the most professional finishing.


Buildings in Australia experience extreme challenging weather conditions throughout the whole year. COLORBOND® Roofing conducts various laboratory tests for durability of corrosion-free exteriors of the buildings, A group of 12,000 panels, as a part of the assessment program, are exposed across various moderate to severe environmental conditions in Australia. This assessment regime carried out by Bluescope exceeds the Australian testing standards for steel building products. The program ensures how the product will perform on real homes.

Purchase your COLORBOND® roofing from Metal Roofing Online: having more than 25 years of hands-on roofing experience, is Australia's leading supplier of COLORBOND® Roofing products and accessories. With highly competitive prices, we supply high-quality building materials with a wide range of COLORBOND colours.

Metal Roofing use products only from the best available brands in the market. The steel used for roofing is trusted Australian BlueScope Steel. BlueScope, one of the largest Australian manufacturer, is covered by warranty online using Warranty Management System on the BlueScope website. BlueScope also offers pre-approved warranty for builders if they fulfill the eligibility criteria. Metal Roofing provides easy, secure online ordering with our safe online payment system.

We offer fast delivery at the specified locations. Just call us, and let us know where you want your goods to be delivered. We will get them there as soon as possible. We also provide pick up facility. Metal Roofing provides the lowest prices and focuses mainly on quality and customer satisfaction. In support, we are also available on call and email to answer any queries related to your projects.