TopShield Galvanized Prebent Step Flashing, Mill Finish, 3 in. x 5 in. x 8 in., 28 Gauge

TopShield prebent step flashing is a mill-finish galvanized steel piece measuring 3 in. x 5 in. x 8 in. in 28 gauge, sold per piece. It seals shingle courses against sidewalls, chimneys and other vertical surfaces to mitigate water damage. Pair it with matching TopShield flashing products for a complete residential flashing package.

Key Features:

• Prebent profile: Ships prebent so it nests against the shingle course and wall without on-site bending.
• 28 gauge steel: Made from durable, low-maintenance 28 gauge galvanized steel.
• Water damage defense: Helps mitigate the risk of water damage to susceptible areas like roof valleys, chimneys, eaves, skylights, ridges and more.
• Mill finish: Mill finish suits unpainted applications and can be paired with painted TopShield flashing lines.
• Residential line: Part of a complete residential flashing line covering shapes and sizes used nationwide.

Specifications Table:

Coverage & How Much You Need:

Step flashing is installed one piece per shingle course along a wall or penetration, so estimate one piece per shingle course plus spares. At a typical 5 in. shingle exposure, plan roughly one piece per 5 ft. of flashing run.

Fit and Compatibility:

Use with asphalt shingle roofing and pair with other TopShield residential flashing shapes for valleys, ridges, eaves and skylights. Painted two-coat polyester enamel finishes are available in the broader TopShield line for color-matched installations.

Frequently Asked Questions (FAQ):

Q: What is included in one order?
A: One prebent step flashing piece in mill-finish galvanized steel, 3 in. x 5 in. x 8 in., 28 gauge.

Q: How many pieces do I need?
A: Use one piece per shingle course along the flashing run; at a standard 5 in. exposure that is about one piece per 5 ft. of wall.

Q: Why galvanized steel?
A: Galvanized steel is a durable, low-maintenance flashing material suited to residential roof details.

Q: Can I get a painted finish?
A: TopShield offers painted finishes in its flashing line with a two-coat, baked-on polyester enamel; this particular item is mill finish.

Q: Where is step flashing used?
A: At roof-to-wall transitions such as chimneys, sidewalls, skylights and other vertical intersections where water can penetrate.

Q: Is custom sizing available?
A: The manufacturer notes custom and specialty products are available upon request.

Expert Verdict — Reviewed by the SuperArbor Pro Desk

Prebent step flashing saves time at sidewalls and chimneys because the bend is consistent piece to piece. Install each piece lapped shingle-over with the vertical leg behind the wall cladding or counterflashing, and never rely on sealant alone. Match the gauge to the surrounding flashing so one material does not wear faster than another. Use painted TopShield pieces when color matching matters and mill finish where it will be covered.

Cut flashing edges are sharp, so wear gloves and eye protection, and follow roof safety practices when working at eaves and valleys.

Order TopShield galvanized prebent step flashing for dependable protection at every roof-to-wall transition.