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Oregon R327 ventilation mesh dimensions and material
Oregon R327 provides a prescriptive mesh path for covered ventilation openings where a local municipality has adopted the section.
An ARC or plan note may ask for the mesh size and material. The adopted local code and the building official decide the project.
Published requirement text
“noncombustible corrosion-resistant metal wire mesh ... minimum of 1/16-inch ... maximum of 1/8-inch”
Where this instrument is documented
Set a location to read how this instrument lands where you are.
In Ashland, this instrument has an active application record — 2 official checks open. Open the Ashland record
In Bend, this instrument has an active application record — 4 official checks open. Open the Bend record
In Deschutes County, this instrument has an active application record — 3 official checks open. Open the Deschutes County record
In Grants Pass, this instrument has an active application record — 4 official checks open. Open the Grants Pass record
In Oregon, this instrument is published for local adoption, not active statewide — 4 official checks open. Open the Oregon record
In Sisters, this instrument has an active application record — 3 official checks open. Open the Sisters record
| Place | Force | Reach | Dated | Checks open | Source |
|---|---|---|---|---|---|
| Ashland | active application documented | incorporated boundary | effective 2021-10-01 | 2 | Ashland Ordinance 3198 |
| Bend | active application documented | incorporated boundary | adopted 2026-04-15 | 4 | Bend Code 9.10.010, Specialty Codes |
| Deschutes County | active application documented | unincorporated county | effective 2026-04-01 | 3 | Deschutes County Fire Hardening Requirements (R327) |
| Grants Pass | active application documented | incorporated boundary | adopted 2021-06-02 | 4 | Grants Pass Municipal Code Title 9, Buildings and Construction |
| Oregon | published for local adoption; not active statewide | unknown | not sourced | 4 | Oregon BCD Home hardening and wildfire hazard mitigation |
| Sisters | active application documented | incorporated boundary | effective 2026-04-01 | 3 | Sisters City Code 15.05.010 (Ord. 545) |
Machine-readable constraints
| Attribute | Operator | Value | Unit |
|---|---|---|---|
| assemblyRole | in | foundation-vent–retrofit-mesh–soffit-vent | |
| meshSizeInch | between | 0.0625–0.125 | inch |
| corrosionResistant | eq | true | |
| noncombustible | eq | true |
Products with documented matching attributes
| Product | Category | Status | Documented match evidence |
|---|---|---|---|
| FireStorm EmberMesh roll | vents | Attribute match | |
| Wildfire Defense Mesh 75 black roll | vents | Attribute match |