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Order online: ZINCALUME® roofing & walling .48 bmt corrugated roofing and walling sheets

These corrugated roofing sheets, manufactured of the highest quality Bluescope Steel, can be used for roofing & walling applications. It is one of the world's most popular profiles. 

What is the steel thickness of these corrugated sheets?

.48 BMT (base metal thickness)


What is the corrugated iron sheet coverage?  

762mm (which allows for the 1.5 rib overlap)


How long does delivery take? 

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


Which fasteners do I use?

When installing the sheets on the roof, we recommend the PLAIN 12 x 50 Multifix Roofing Screws Category 5 - these fasten into timber or steel. 


How much should I allow for the sheets to run into the gutter?

We recommend a 50mm overhang into a standard gutter.


What is the ACTUAL sheet width? 

The actual sheet width of corrugated iron is 850mm.  


Sheet Tolerance: Length: + 10mm, – 15mm; Width: + 4mm, – 4mm Make allowance for thermal expansion or contraction for long-length roofs at sheeting ends

ZINCALUME Corrugated Roofing Sheets: Corrugated steel roofing and wall cladding are high-strength steel. Made from zincalume to last a long time. Cut-to-size sheets get rid of end laps and let the roof be laid from the eaves to the ridge in a single step, which cuts down on installation time.


Corrugated iron was made to be a lightweight roofing material that is simple to create and move but still has strong structural properties and doesn't get damaged easily in use.


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. 

ZINCALUME® Corrugated Iron Roofing & Cladding

Steel thickness - .48 BMT

Sheet cover - 762mm

Corrugated roof sheets Zincalume® are among the world’s most popular metal roofing products due to their high quality and versatility. These corrugated iron roofing panels are suitable for traditional and contemporary roofing projects. It is long, wide, strong, lightweight and has an economic profile that can be quickly and easily aligned. These features alone will deliver you a steel roof that offers outstanding value!

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. 

It can be used in roofing and walling applications, and 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.

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.

Recommended Fixing Method

Here at Metal Roofing Online, we only use and recommend category 5 screws when fixing roofing 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 a choice between 12 gauge x 25 mm timber fix screws when fixing into the timber. Otherwise, 10 gauge x 16mm will do the trick when fixing into steel. These screws are shorter as they are fixed into the corrugation's pan (or valley).

Who is BlueScope Steel owned by?

BlueScope has a long and proud history in the Illawarra as an efficient, trusted, and innovative steelmaker.

It arose from the merger of three companies that helped to establish the Australian steel industry in the early twentieth century: The Broken Hill Proprietary Company Limited (BHP), John Lysaght (Australia) Pty Ltd (Lysaght), and Australian Iron and Steel Limited (AIS).

The company began in 1915, when BHP established a steelworks in Newcastle, New South Wales.

Lysaght, a British company, established an Australian operation in 1918 to serve the building and construction industries. Its galvanised corrugated steel has long contributed to the distinctively Australian architectural style.

In 1999, a portion of BHP Steel's assets were spun off as OneSteel. BlueScope Steel, and now BlueScope, were formed from the remaining assets in 2002.

In 2011, Port Kembla Steelworks cut production in half, exiting the export market and operating only one blast furnace.

The Port Kembla Steelworks remains the company's largest global operation, producing 2.6 million tonnes of raw steel annually. The company is a global leader in metallic coating and painting technologies, offering a diverse range of branded products, including COLORBOND® steel, ZINCALUME® steel, and the LYSAGHT® building product line. It serves its customers throughout Australia through a network of distribution and manufacturing facilities.

BlueScope Steel Limited Products in Australia

Who makes COLORBOND steel products?

Choose from 22 natural-inspired colours, including six matte colours. Colorbond® steel is manufactured in Australia under BlueScope steel limited.

BlueScope's COLORBOND® steel is one of Australia's most popular building materials, and it has been an iconic Australian brand for over 50 years since it first rolled off a paint line.

COLORBOND® steel is inspired by the unique duality of Australia's beauty and strength and is built to withstand it. COLORBOND® steel is known for its iconic good looks but is also designed with durability, performance, compliance, and sustainability.

COLORBOND® steel is the ideal solution for a wide range of applications, including roofing and walling, garage doors, fencing, sheds, insulated panels, patios, and pergolas, to name a few.

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