Home / Requirements / IWUIC valley flashing
2024 IWUIC roof-valley flashing metal path
The unamended 2024 IWUIC model code specifies No. 26 galvanized corrosion-resistant metal valley flashing over a named full-width cap-sheet detail.
A flashing product can document the metal portion only. The 36-inch cap sheet, full-valley installation, compatibility, and locally adopted text remain separate checks.
Published requirement text
“not less than 0.019 inch (0.48 mm) (No. 26 galvanized sheet gage) corrosion-resistant metal”
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 | Unit |
|---|---|---|---|
| assemblyRole | eq | valley-flashing | |
| sheetGauge | lte | 26 | sheet-gauge |
| corrosionResistant | eq | true | |
| material | in | galvanized-steel |
Products with documented matching attributes
| Product | Category | Status | Documented match evidence |
|---|---|---|---|
| Westlake Royal ribbed valley metal | roofing | Attribute match |