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Trimdek® ZINCALUME® Roofing Sheets - Victoria Trimdek Diagram ZINCALUME® Trimdek Span Table Trimdek Span Diagram Trimdek Weight

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These ZINCALUME® Trimdek sheets are for use on roof pitch of 2° or greater and are an economical roofing,  cladding or wall sheet option. This profile is a long spanning cladding permitting wide support spacing & is a versatile, strong yet lightweight profile.


What is the sheet cover of the Trimdek Sheets? 
Cover width is 762mm. Actual sheet width is 820mm.

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

How long does delivery take? 

Delivery takes approximately working 3 - 4 days. 


What fasteners do I use on the sheets?

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.


How much should I allow into the gutter?

It is usual to allow roof 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, Apclad and Monoclad Trimdek metal 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.

Steel thickness - .42 BMT

Cover width of sheet - 762mm (same cover as corrugated iron) The neatest way to cut the roofing sheets is with tin snips

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.


ZINCALUME® steel is developed for, and therefore more resilient to, the severe sunlight and temperatures typical of Australian environments. BlueScope scientists have tested ZINCALUME® steel in some of Australia’s harshest climates. 

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



7 Reasons Why ZINCALUME® Trimdek Roofing Is a Top-Rated Product

Roofing is a vital component of building structures; therefore, it’s imperative to choose the best roofing products to ensure that it will effectively deliver both beauty and function to the structure, be it a home or a commercial building. And speaking of the best product for roofing, Trimdek easily makes the list, according to professional roofers and building contractors in Australia. Why? When it comes to durability, Trimdek always rates high because it’s been developed to withstand all the abuses roofs are commonly subjected to, and its many options are suited to the climate and conditions of specific areas. Therefore, homeowners can have the assurance that it will not just protect their home from the elements, but it will also last them an impressively long time. Trimdek comes in a vast variety of colour options. This means finding the right hue to fit customers’ preferences will be easy. So, whether they want their home or building to blend harmoniously into the landscape or they want it to pop, that will be a breeze to accomplish, given the wide selection of colours Trimdek roofing sheets come in for people to choose from. It’s quick to install because it’s lightweight, comes in long lengths, and the square-fluted design profile comes in both convex and concave pre-curved sheets. Roofers don’t have to work extra hard to arrange, fix and bend Trimdek roofing sheets according to the shape of the structure. It has overlapping side ribs, which are an advantage in preventing leaks that can spawn exponential damages to the building structure and other components. Trimdek roofing is easy to repair as well; deformities due to heavy debris falling on it can be corrected right away in order to restore its nice original appearance. It’s a highly versatile product. Although intended for roofing, it can also be used for walling and as a substitute or reinforcement for certain structural elements. It’s economical. Not only can it be purchased at an affordable price (especially if folks shop online from trusted suppliers that are generous with discounts and cost-saving deals), but also, it’s cost-effective because of its functional lifespan, resistance to many damaging components, and the ease of installation. By opting for this product, people actually can save a significant amount of money. Beauty, economy, and functional versatility — these are the benefits delivered by Trimdek. It’s no wonder it is highly recommended by (and is a much-preferred product of) roofers and contractors. Trimdek is available through us here at Metal Roofing Online.


Purchase your ZINCALUME® Steel with Metal Roofing Online 


ZINCALUME® Steel is a sustainable, next generation sheet steel, developed for durability and resilience. With its patented metallic coating, the product is two to four times more resistant to corrosion than galvanised steel. Manufactured by the trusted Australian company, BlueScope Steel, they’re so confident that ZINCALUME® is a product you can trust, every purchase is covered by warranty. Why is ZINCALUME® the best choice? Easily bent, roll-formed or drawn, ZINCALUME® is the building material of choice for construction projects all around the world. ZINCALUME® is perfect for complex architectural applications. Its flexibility makes it the product choice for both traditional straight roof sheeting and innovative curved roofing designs. Durable and resilient Highly scratch-proof thanks to ZINCALUME® steel’s patented Activate® aluminium-zinc alloy coating, ZINCALUME® AM125 has a long lifespan and will provide years and years of protection for your building. The development of ZINCALUME® Tested over a 17 year period, under a variety of “real world” climatic conditions including extreme marine environments, you can be assured that ZINCALUME® AM125 is the material that’s going to withstand the constant attack of the elements for many years to come. BlueScope Steel are so convinced that ZINCALUME® AM125 is the most durable steel product on the market, they back the product with a warranty of up to 36 years! Thermally efficient ZINCALUME® is one of the world’s most thermally efficient roofing materials and because it’s so tough and durable, it acts as a major deterrent against intruders. Weather tight and secure, ZINCALUME® is a material you can trust. Purchase with us today! Purchase your ZINCALUME roofing from Metal Roofing Online. Our 30 years of experience in the roofing trade make us the ideal choice for the supply and installation of your ZINCALUME® products. Easy, secure online ordering. Fast delivery at the lowest prices!




Reasons why you should consider Colorbond Metal Roofing.

Metal roofing merely is roofing of building using metal. Therefore Colorbond Metal Roofing is a trusted Australian Bluescope steel roof which has been used for delivering the materials necessary for roofing. Steel is the material used for roofing products by Colorbond Metal Roofing. Here are benefits as to why you should consider using Colorbond Metal Roofing for your structure. Low price; Colorbond Metal Roofing offers cheap costs to its clients for roofing. The iron sheets and metals are made of steel which is durable, and they are highly resistant to weather change. Fast delivery; Colorbond Metal Roofing provide faster delivery to its customers and its considered reliable and available to its customers all time. It gives its customers even at the emergency case. The product from Colorbond Metal Roofing is the most efficient and low maintenance costs. Easy and secure online ordering; Colorbond Metal Roofing has developed a website to enhance easier address location and contacts. The websites also provide a sample of the products they sell and also their material constituent. This helps the client to make the right decision about which product fits their budget. If you are planning to build a home, consider using Colorbond metal roofing, and you will never regret anything in your life. Since they offer a product of high quality and durable that are environmentally friendly. As long the company continue using steel products be assured of getting new styles every day. You can check on their website and journal to get the product they have manufactured currently. The colorbond also help in providing customers with advice on how to use their products steps by steps; it provides a regular update guide to metal roof pricing and free metal calculator. Thus helping customers to estimate their roofing costs before they hire roofing contractors to re-roof their buildings.