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ZINCALUME® 100mm Z flashing for windows – corrosion-resistant steel

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Rainhead Flashing Order Form Sump / Tray Flashing Form EXAMPLE Flashing Order CUSTOM Flashing Order Form1 CUSTOM Flashing Order Form

Would you like a custom flashing, sump, or rainhead? Please download the applicable order sheet and return it to us at sales@metalroofingonline.com.au

ZINCALUME® Z Window Flashing – 100 x 25 x 10

Durable window flashing crafted from genuine ZINCALUME® steel – designed to deflect water and protect openings from leaks and corrosion.

Dimensions: 100mm x 25mm x 10mm
Length Tolerance: +200mm / –0mm
Steel Thickness: 0.55 BMT (base metal thickness)
Custom Sizes: Available to order – download our Custom Flashings Order Form and email it to sales@metalroofingonline.com.au

✔️ Genuine Australian ZINCALUME® steel by BlueScope
✔️ Excellent corrosion resistance and long service life
✔️ Perfect for windows, cladding junctions, and flashing breaks
✔️ Fast delivery

Built for strength and performance, our ZINCALUME® Z flashing offers reliable protection and easy installation across a range of applications.

How to Measure & Order Custom Flashings

Accurate Flashing Measurements Made Simple

When ordering CUSTOM COLORBOND® roof flashings online, accurate measurements ensure a perfect fit and weatherproof finish. At Metal Roofing Online, every flashing is made to order — cut, folded and delivered direct to site over Victoria, New South Wales, ACT, Queensland and Tasmania.

1. Measure Each Dimension Clearly

Front Face (A): The visible vertical section of your flashing once installed.
Top (B): The horizontal section that sits over the sheet or wall cladding.
Back (C): The rear leg that returns under or behind the roof sheeting or wall.

Always measure to the nearest millimetre and confirm roof pitch or junction angle before ordering. Use a folded sample or existing piece as a template if available.

2. Choose Your Material & Finish

We manufacture in genuine BlueScope COLORBOND® or ZINCALUME® steel, available in .55 BMT for maximum strength and durability. Choose from all standard COLORBOND® colours, including popular options like Monument®, Surfmist® and Woodland Grey®.

3. Length & Transport

Custom flashings can be ordered up to 8 metres in length. For ease of handling and freight, many installers choose 3-metre sections.

4. Add to Cart & Checkout

Once your measurements are entered, select your colour and quantity, then click Add to Cart. Our system automatically applies regional delivery pricing for Victoria, NSW, QLD and Tasmania.

Tip: Include matching Barge Capping or Ridge Capping in your order to complete your roofing system.

5. Fast Turnaround & Australian Compliance

All flashings are made in Australia using BlueScope steel that meets AS/NZS 1397 and 2728. You’ll receive quality that’s compliant, long-lasting, and ready for site installation within days.

Why Builders Choose Metal Roofing Online

Made-to-measure flashings for any roof profile
Precision folded using industrial machinery
Delivered direct to site, fast and reliable
Backed by Australian Standards and BlueScope warranties

Explore our full range of COLORBOND® Flashings.

Updated October 2025 | Author: Metal Roofing Online – Australian Supplier of COLORBOND® & ZINCALUME® Roofing Materials

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