Home / Requirements / 2021 IWUIC Class 2 solid eave enclosure

2021 IWUIC Class 2 solid eave-enclosure path

The unamended 2021 IWUIC specifies solid material at least three-quarter inch thick around combustible eaves, fascias, and soffits in Class 2 construction.

This record covers documented thickness and solid-surface attributes for an eave product. Complete enclosure, combustible-substrate context, rafter tails, fastening, official class, project scope, and local amendments remain checks.

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

Published requirement text

“enclosed with solid materials with a minimum thickness of 3/4 inch (19 mm)”

2021 International Wildland-Urban Interface Code, Section 505.3 — International Code Council

Where this instrument is documented

Instrument iwuic-2021.

Set a location to read how this instrument lands where you are.

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	Unit
solidSurface	eq	true
thicknessIn	gte	0.75	inch

Sources

2021 International Wildland-Urban Interface Code, Section 505.3 — International Code Council (official). Accessed 2026-08-27.

2021 IWUIC Class 2 solid eave-enclosure path. FireApproved. https://fireapproved.com/requirements/iwuic-2021-class-2-solid-eave-enclosure/. Last verified 2026-08-27.