When planning a new shed in Central Victoria, one of the first decisions you will face is choosing the right cladding material. For most Australian property owners, this comes down to two options: Zincalume or Colorbond. Both are manufactured by BlueScope Steel and both are proven performers in Australian conditions, but they serve different purposes and suit different budgets. Understanding the core differences will help you choose the right material for your project the first time around.
What Zincalume Actually Is (and Where It Excels)
Zincalume is a steel substrate coated with a combination of zinc, aluminium, and silicon. This coating gives it strong corrosion resistance and high heat reflectance straight out of the factory. It has the familiar silver finish you see on farm sheds, machinery shelters, and industrial buildings across regional Victoria.
Where Zincalume typically makes the most sense is on structures where durability and value matter more than visual presentation. A large machinery shed set back from the homestead, a rural hay storage building, or an agricultural shelter are all strong candidates. The material delivers excellent longevity at a lower price point than Colorbond, which is why it remains the default choice for most working farm buildings.
What Colorbond Adds to the Equation
Colorbond is, at its core, the same Zincalume steel with an additional oven-baked paint finish applied during manufacturing. This gives it the colour range (more than 22 standard options, from Monument to Paperbark) and the added layer of protection that comes with a factory-applied coating.
The practical difference is twofold. First, Colorbond allows you to match your shed to your home’s roofline, fencing, or general property aesthetic, which matters considerably for structures visible from the house or the street. A backyard workshop in Monument that matches the house roof looks intentional; a silver Zincalume shed in the same position can feel out of place.
Second, many Colorbond colours incorporate BlueScope’s Thermatech solar reflectance technology, which reduces the amount of heat absorbed by the roof and walls. In Central Victoria’s summers, this can make a measurable difference to the internal temperature of a shed used as a workshop or home office.
When Brett came to CV Sheds after nearly 20 years of searching for the right shed to store and showcase his cars and boat, aesthetics were as important as function. The finished build featured a higher-than-standard roof, a roof window for natural light, and a Colorbond finish that complemented the property. Because the shed was designed to be seen and used daily, Colorbond was the obvious choice.
A Common Misunderstanding: Colorbond Is Not “Better”
It is easy to assume that the more expensive option is automatically the superior one, but that is not quite right here. Colorbond costs roughly 10 to 15 per cent more than Zincalume, and the added cost buys you colour and a slightly enhanced protective layer. It does not buy you a fundamentally stronger or longer-lasting structure.
For a large farm shed that will never be seen from the road, paying the Colorbond premium for aesthetics alone would be difficult to justify. Conversely, for a suburban garage or a workshop attached to the house, the visual cohesion and thermal performance of Colorbond typically make it worth the difference.
The best choice depends on where the shed will sit, what you will use it for, and how much the visual finish matters to you. There is no universal answer.
How They Compare Side by Side
| Zincalume | Colorbond | |
| Silver metallic finish. Zinc-aluminium-silicon coating. No paint layer — colour cannot be changed after install. | Same steel core, with a factory-applied oven-baked paint finish available in 22+ colours. | |
| Best for | Rural & farm sheds | Homes & workshops |
| Price point | Base price | ~10-15% premium |
| Colour options | Silver only | 22+ colours |
Choosing the Right Material for Your Build
If your shed is primarily functional, sits away from the house, and budget is a key consideration, Zincalume will typically be the right call. If the shed is visible from the home or the street, will be used as a workspace, or needs to complement your property’s existing colour palette, Colorbond is generally worth the additional investment.
Either way, both materials are Australian-made, well-proven in Victorian conditions, and backed by BlueScope warranties. The starting point is deciding what matters most for your specific project.
Browse our Shed Gallery to see the difference between Zincalume and Colorbond in completed builds, or get a quote for your custom project today.