Arts Aluminum 2-Piece Roof Assembly Top, 4 in., Mill Finish - image 1

Arts Aluminum 2-Piece Roof Assembly Top, 4 in., Mill Finish

Regular price $32.00

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Arts Aluminum 2-Piece Roof Assembly Top, 4 in., Mill Finish


This Arts 4 in. aluminum roof assembly top is the top piece of a two-piece pipe flashing assembly used for ventilation of pipes penetrating the roof. It is made of durable, lightweight aluminum in a mill finish and sold individually (EA). A base is required for installation and is sold separately.


Key Features:

  • Ventilation Piece: This top is part of a two-piece roof assembly for ventilation.
  • Quick Replacement: Allows quick substitution of a damaged top without replacing the whole assembly.
  • Lightweight Aluminum: Made of durable, lightweight aluminum.
  • 4 in. Size: Sized for a 4 in. pipe assembly.
  • Base Required: Requires a base for installation; the base is sold separately.

Specifications Table:

Specification Details
Brand Arts
Sell unit 1 each
Product line 2-Piece Roof Assembly
Available colors Mill
Available sizes 4"
Dimensions 4 in.
Material Aluminum
Finish / texture Mill
Assembly Two-piece (top only; base sold separately)
Intended use Ventilation top for pipe roof assemblies

Fit and Compatibility:

Fits the Arts two-piece roof assembly system in the 4 in. size and requires a matching base for installation, sold separately. Use it to substitute a damaged top on an existing assembly.


Frequently Asked Questions (FAQ):

Q: Is this the complete flashing?
A: No, this is the top only; a two-piece assembly base is required for installation and is sold separately.


Q: What is it made of?
A: Durable, lightweight aluminum with a mill finish.


Q: Can it replace a damaged top?
A: Yes, it allows quick substitution of a damaged top on an existing assembly.


Q: What size is it?
A: It is sized for a 4 in. pipe assembly.


Q: What is it used for?
A: It is the ventilation piece of a two-piece roof assembly over a pipe penetration.


Expert Verdict — Reviewed by the SuperArbor Pro Desk

A two-piece roof assembly is the smart choice where a vent pipe must be flashed before the roof surface is finished, since the base can be weathered in first and the top added later. Keep a spare top on hand for quick replacement after storm damage without disturbing the base seal. Confirm the 4 in. size matches the base and pipe before ordering.

Install only with the matching base properly secured and sealed to the roof, and use fall protection when working at the penetration.


Order the Arts Aluminum 2-Piece Roof Assembly Top to complete or repair your 4 in. pipe assembly.

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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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