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Understanding the Main Types of Roof Flashings

When planning a new roof or replacing old materials, choosing the right flashing type is essential. Each type of flashing—ridge, barge, and apron—has a unique function to seal and finish different roof junctions. Knowing the difference helps ensure your COLORBOND® or ZINCALUME® roof stays watertight, neat, and compliant with Australian standards.

1. Ridge Flashings (Ridge Capping)

Ridge flashings, often called ridge capping, sit along the very top of the roof where two sides meet. They seal the apex and prevent rain or debris from entering through the sheet joins.

• Used along the peak or hip lines of roofs.
• Commonly folded for 15°–45° roof pitches.
• Available in .55 BMT COLORBOND® or ZINCALUME® steel.
• Typically supplied in 3m or custom lengths up to 8m.

Explore our range of Ridge Capping Flashings made to order and delivered Victoria, New South Wales, ACT, Queensland and Tasmania.

2. Barge Flashings (Barge Capping)

Barge flashings protect the edges of roofing sheets where they meet the gable ends. They provide a clean, finished look and protect against wind-driven rain entering under sheet edges.

• Installed on gable roof edges.
• Designed to overlap roofing sheets and cover exposed ends.
• Improves weather resistance and enhances appearance.
• Custom folds available to match your sheet profile and roof angle.

View our Barge Capping Flashings for all COLORBOND® colours and thicknesses.

3. Apron Flashings

Apron flashings are used where the roof meets a vertical surface—such as a wall, chimney, or parapet—to divert water away from the intersection and prevent leaks.

• Ideal for roof-to-wall junctions and base flashings.
• Can be paired with counter-flashings for extra protection.
• Folded to custom dimensions for any roof type.

Explore our Apron Flashings for residential and commercial applications.

Which Flashing Do You Need?

If you’re finishing the top of the roof, choose ridge capping. For the gable edges, select barge flashings. And where the roof meets a wall or structure, use apron flashings. Each style plays an important role in creating a weatherproof and professional finish.

Australian-Made Quality

All flashings are manufactured from genuine BlueScope COLORBOND® and ZINCALUME® steel, fully compliant with AS/NZS 1397 & 2728. Produced locally, precision-folded, and delivered fast to Victoria, NSW, Queensland and Tasmania.

Browse our full COLORBOND® Flashings range for detailed specifications.

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