ACM Galvanized Z-Bar, 26 Gauge, 2 in. x 1 in. x 1/2 in. - image 1

ACM Galvanized Z-Bar, 26 Gauge, 2 in. x 1 in. x 1/2 in.

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ACM Galvanized Z-Bar, 26 Gauge, 2 in. x 1 in. x 1/2 in.


The ACM Z-bar is a 26-gauge galvanized steel Z-flashing formed at 2 in. x 1 in. x 1/2 in. and sold as a single piece. It laps over sheathing or siding top edges to shed water and pairs with other ACM flashing components on exterior wall details.


Key Features:

  • Z-shaped profile: The Z formation sheds water over the top edge of siding or sheathing.
  • 26-gauge steel: Rolled from 26-gauge galvanized steel for durability.
  • Mill finish: Bare galvanized mill finish can be painted to match the building.
  • Compact formation: 2 in. x 1 in. x 1/2 in. legs fit standard siding and trim details.
  • Single piece: Sold per piece for ordering only the footage you need.
  • Corrosion protection: Galvanizing helps the bar resist rust behind exterior cladding.

Specifications Table:

Specification Details
Brand ACM
Sell unit 1 piece
Product line ACM Z-Bar
Dimensions 2 in. x 1 in. x 1/2 in.
Material Galvanized steel
Finish / texture Mill
Wire gauge 26 ga
Available colors Mill
Available sizes 2 in. x 1 in. x 1/2 in.
Intended use Z-flashing over horizontal siding or sheathing edges

Fit and Compatibility:

Used at horizontal breaks in siding or at roof-to-wall transitions and pairs with other ACM galvanized flashing pieces. Sold as individual pieces; lap successive pieces along the run.


Frequently Asked Questions (FAQ):

Q: What is included?
A: One 26-gauge galvanized Z-bar piece formed at 2 in. x 1 in. x 1/2 in. in mill finish.


Q: Where is Z-bar used?
A: It is installed over the top edges of siding panels, trim or sheathing to shed water away from the joint.


Q: Can it be painted?
A: The mill galvanized finish can be field-painted with paint compatible with galvanized metal.


Q: How do I join pieces?
A: Lap each subsequent piece over the previous one in the direction of water flow.


Q: What gauge is it?
A: It is formed from 26-gauge galvanized steel.


Expert Verdict — Reviewed by the SuperArbor Pro Desk

Z-bar belongs anywhere a horizontal joint must shed water, most commonly over the top of lap siding or at roof-to-wall transitions. Always let the lower leg lap over the material below and the upper leg tuck behind the weather-resistive barrier above. The 2 in. x 1 in. x 1/2 in. formation is a common fit for standard siding reveals.

Galvanized flashing edges are sharp; wear gloves and eye protection when cutting and handling.


Order the ACM 26-gauge galvanized Z-bar for reliable water shedding at your horizontal siding and trim joints.

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Subject to Approval & Availability
All orders are reviewed before fulfillment. You are not charged until your order is approved and ready to ship — and you may cancel at any time before that at no cost.

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