Home / Requirements / IWUIC Class 1–2 noncombustible wall
2024 IWUIC Class 1 and 2 noncombustible exterior-wall path
The unamended 2024 IWUIC model code includes approved noncombustible material as an exterior-wall path in Class 1 and Class 2 construction.
This record covers only the product material path. Approval, full wall construction, foundation-to-roof extent, other alternatives, and local amendments remain separate checks.
Published requirement text
“Approved noncombustible materials.”
Where this instrument is documented
Set a location to read how this instrument lands where you are.
In Austin, this instrument has an active application record — 5 official checks open. Open the Austin record
In Clark County, this instrument has an active application record — 6 official checks open. Open the Clark County record
In Jackson, this instrument has an active application record — 5 official checks open. Open the Jackson record
In Prescott, this instrument has an active application record — 6 official checks open. Open the Prescott record
In Teton County, this instrument has an active application record — 6 official checks open. Open the Teton County record
In Washoe County, this instrument has an active application record — 6 official checks open. Open the Washoe County record
| Place | Force | Reach | Dated | Checks open | Source |
|---|---|---|---|---|---|
| Austin | active application documented | authority area | effective 2025-07-10 | 5 | Austin Ordinance 20250410-041 |
| Clark County | active application documented | unincorporated county | effective 2026-01-01 | 6 | Clark County Ordinance 5320 |
| Jackson | active application documented | incorporated boundary | effective 2025-01-01 | 5 | Town of Jackson Ordinance 1416 |
| Prescott | active application documented | incorporated boundary | adopted 2026-05-12 | 6 | Prescott City Code 6-2 Urban-Wildland Interface Code |
| Teton County | active application documented | unincorporated county | effective 2025-02-01 | 6 | 2024 Teton County Fire Code Resolution |
| Washoe County | active application documented | unincorporated county | effective 2025-07-01 | 6 | Washoe County Adopted Building Codes |
Machine-readable constraints
| Attribute | Operator | Value |
|---|---|---|
| noncombustible | eq | true |
Products with documented matching attributes
| Product | Category | Status | Documented match evidence |
|---|---|---|---|
| AL13® Plank System | siding | Listed | 1 cited field |
| Clicklad Closed-Gap aluminum cladding system | siding | Listed | 1 cited field |
| Hardie® Plank lap siding | siding | Listed | 1 cited field |
| Hardie® Textured Panel, noncombustible fiber-cement panel siding, 5/16" thick | siding | Listed | 1 cited field |
| JAMES HARDIE BUILDING PRODUCTS, INC. (8140-2026:0001) | siding | Listed | 1 cited field |
| JAMES HARDIE BUILDING PRODUCTS, INC. (8140-2026:0004) | siding | Listed | 1 cited field |
| JAMES HARDIE BUILDING PRODUCTS, INC. (8140-2026:0500) | siding | Listed | 1 cited field |
| Longboard® 6-inch exterior aluminum siding | siding | Listed | 1 cited field |
| ROCKWOOL Comfortboard 80 exterior continuous insulation | siding | Listed | 1 cited field |
| Thermafiber RainBarrier High Compressive 80 and 110 exterior insulation | siding | Listed | 2 cited fields |
| WoodSyn OptimBoard™ wood-wool cement sheathing | siding | Listed | 1 cited field |