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2021 IWUIC noncombustible gutter and downspout path

The unamended 2021 IWUIC specifies noncombustible gutters and downspouts in all three ignition-resistant construction classes.

A product record can document material and role. Debris control, attachment, drainage, official class, project scope, and locally adopted amendments remain checks.

code · Jurisdictions adopting unamended 2021 IWUIC Chapter 5 · Last verified 2026-08-27 · JSON (CC BY 4.0)

Published requirement text

“Gutters and downspouts shall be constructed of noncombustible material.”

2021 International Wildland-Urban Interface Code, Sections 504.4, 505.4, and 506.4 — International Code Council

Where this instrument is documented

Instrument iwuic-2021.

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Place	Force	Reach	Dated	Checks open	Source
Pennsylvania	active application documented	statewide	effective 2026-01-01	4	34 Pa. Code § 403.21 Uniform Construction Code

Each place page carries that place's boundary, project scope and open official checks in full; this page's JSON twin carries them per application.

Machine-readable constraints

Attribute	Operator	Value
assemblyRole	in	gutter–downspout
noncombustible	eq	true

Sources

2021 International Wildland-Urban Interface Code, Sections 504.4, 505.4, and 506.4 — International Code Council (official). Accessed 2026-08-27.

2021 IWUIC noncombustible gutter and downspout path. FireApproved. https://fireapproved.com/requirements/iwuic-2021-noncombustible-gutters/. Last verified 2026-08-27.