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Order online: ZINCALUME® Trimdek Roofing & Walling sheets .42bmt

These ZINCALUME® Trimdek sheets are for use on a 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? 
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 Steel sheets.

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

How long does delivery take? 

Delivery takes approximately working 4 - 7 days, depending on delivery location. 

What fasteners do I use on the sheets?

We recommend a 12 gauge x 65mm Type 17 Hex Head screw when fixing into timber battens. If fixing into steel purlins, please use a 12 gauge x 55mm Steel Fix Hex Head screw. When installing the sheets as wall cladding, a 12 gauge x 25mm Type 17 Hex Head should be used for timber battens. For steel purlins, a ten gauge x 16mm Steel Fix Hex Head screw is preferred.

How much should I allow into the gutter?

Turn your Trimdek Sheets up or down using this Trimdek Tool. 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 the lower ends and turned up at the upper ends by about 80°. 



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.







Beautifying And Protecting Buildings With High Quality Roofing Supplies

Roofs protect homes and other structures from the wind, rain and other elements. They’re an essential part of everyday life. Roofs allow buildings to withstand the impact of changing seasons, and at the same time, blend beautifully into an area’s natural landscape. They are not just functional; they also display people’s aesthetic sensibilities. In recent years, roofing materials have been developed further to meet new requirements created by global warming and people’s fast-changing comfort and style preferences. It can be quite a delight shopping for roofing supplies because of the vast selection. For example, Australian BlueScope Steel products offer an impressive design range of roofing sheets. The many design options of roofing sheets allow buyers to choose what would work compatibly with the architectural design of a building. Aside from that, buyers can also make sure that the buildings achieve the ideal interior environment; that’s because there are roofing sheets and other materials that have been created to block solar radiation very effectively. Manufacturers carefully studied how these roofing materials can have effective insulating properties. Along with that, they made sure that they have a product line-up that also includes items that are completely fire-resistant since bush fires are a big problem in the Australia. They want roofs to contribute in a big way to the goal of making buildings a completely safe shelter from nature’s extremes. Not all roofing materials are created the same, however. There are definitely brands that outperform others by delivering even more benefits to home and building owners in terms of function. Therefore, if you’re installing a new roof, it’s crucial to be a smart buyer. If you want the best protection for your building, you must study all your options and compare them against each other. Don’t make price the main consideration; instead, look into the capabilities of the products and how they meet your requirements. When you start off this way, finding roofing supplies that go with your budget will become a breeze. And when it comes to high-quality roofing supplies, you cannot overlook Australian BlueScope Steel products. Not only are these some of the best (if not the best) on the market in terms of quality, but they are very affordable, too. If you’re looking for a great deal on Australian BlueScope Steel roofing supplies, you’ll find trusted vendors that offer them at the lowest prices and deliver orders really quickly.

Finding The Best Roofing Supplies.

Do you have a rooftop fix that you have to finish in a rush? Here are a few hints for finding the best spot to purchase your roofing supplies to keep you and your family dry. Conveys a Variety of Products. Each rooftop is extraordinary and will require various apparatuses and hardware to fix it legitimately. Ensure you discover an area that conveys a wide range of items and brand names to ensure you get exactly what you are searching for. Remember that taking a gander at their site probably won't give data on the majority of the items they convey. Be set up to shop face to face too before acquiring supplies. Has an Established Reputation. Before you go off on your scan for the perfect roofing supply store, make a point to pause for a moment and look online for changed shops and get a thought of their notoriety. You can likewise swing to your online life systems and publicly support the data. Almost certainly, you have loved ones who have needed to take on related tasks and have data about where to go. Offers a Good Value. When you are looking for the supplies you need, don't merely search at the most reduced cost. Not all materials and brands are made an equivalent. There may be an instrument that will last you significantly more and be more costly than one that is less expensive yet will probably break after a brief timeframe. Has Helpful and Communicative Employees. You probably won't know everything there is to think about roofing. You may require some assistance with your undertaking as far as finding the correct instruments and things you have to work superbly. Discover an area that can help by responding to questions and giving direction on your venture. You can genuinely well measure their mastery by calling a couple of stores ahead of time and disclosing to them what you need.

Zincalume- reasons to purchase for your roofing system.

There are a large varieties of roofing materials that you can select for your home but the most cost effective option for you is Zincalume that is regarded to be the best roofing material. It is known to last for more than 30 years so that there is no need for replacing the roof and for ordering this roofing system, you will need to visit https://www.metalroofingonline.com.au - This is the best place where you will get roof with fast delivery so as you can enjoy staying in a safe and secure property. Zincalume is considered as the most popular option for your household as it will add beauty, elegance and functionality to your property. Hence with easy and secure online ordering, you can be rest assured that you will get the highest quality products at the most affordable prices. Moreover, with the trusted Australian- Bluescope steel roofing at lowest prices, you will be able to enjoy the best roof over your head for an extended period of time.