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Understanding the Main Types of Roof Flashings

When completing any metal roofing project, it’s essential to select the right flashing profile for each junction. Ridge, barge, and apron flashings each play a specific role in keeping your roof watertight and finished to Australian standards. Knowing the difference helps you order with confidence from Metal Roofing Online.

1. Ridge Flashing (or Ridge Capping)

Ridge flashings, also known as ridge capping, cover the highest point where two roof slopes meet. They seal the roof apex, preventing rain and wind from entering between the sheets.

• Used along the roof peak or hip lines.
• Commonly folded to suit 15°–45° roof pitches.
• Typically 200–300mm wide with equal sides.
• Available in matching COLORBOND® or ZINCALUME® finishes.

See our full range of ridge capping flashings for custom lengths and angles.

2. Barge Flashing (or Barge Capping)

Barge flashings finish and protect the edges of roofing sheets where they meet the gable ends of the roof. They provide both a clean aesthetic and crucial weatherproofing.

• Used on the gable edge of the roof.
• Shields the sheet ends from wind-driven rain.
• Creates a smooth transition from roof to wall line.
• Available in standard and custom folds to suit your sheet profile.

Order online from our Barge Capping Flashing range for fast delivery across Australia.

3. Apron Flashing

Apron flashings are used where the roof meets a vertical wall or structure, such as at the base of a chimney or parapet. They direct water away from the intersection to prevent leaks.

• Installed at roof-to-wall junctions or at the base of penetrations.
• Can be combined with counter-flashings for extra protection.
• Ideal for sheds, garages, and wall cladding interfaces.

See our Apron Flashings for options made in genuine COLORBOND® steel.

Choosing the Right Flashing

Each flashing type is designed to work together as part of a complete weatherproof system. Always ensure consistent material, colour, and BMT thickness across your roof for best performance.

• For pitched roofs → choose ridge flashings.
• For gable ends → choose barge cappings.
• For wall junctions → choose apron flashings.

Quality You Can Trust

All flashings from Metal Roofing Online are folded from genuine BlueScope COLORBOND® or ZINCALUME® steel, meeting AS/NZS 1397 & 2728. Manufactured to order and delivered fast throughout Victoria, NSW, QLD and Tasmania.

Explore the full Flashings Collection for more examples and specifications.

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