{"id":"orsc-r327-vent-mesh","license":"CC-BY-4.0","data":{"title":"Oregon R327 ventilation mesh dimensions and material","shortName":"ORSC R327 vent mesh","summary":"Oregon R327 provides a prescriptive mesh path for covered ventilation openings where a local municipality has adopted the section.","framing":"An ARC or plan note may ask for the mesh size and material. The adopted local code and the building official decide the project.","kind":"code","instrumentId":"orsc-r327","jurisdiction":"Oregon local jurisdictions that adopted ORSC R327","placeIds":["us-or"],"appliesToCategories":["vents"],"quotedText":"noncombustible corrosion-resistant metal wire mesh ... minimum of 1/16-inch ... maximum of 1/8-inch","source":{"title":"2023 Oregon Residential Specialty Code Section R327 amendment","url":"https://www.oregon.gov/bcd/codes-stand/Documents/23orsc-r327-amend.pdf","publisher":"Oregon Building Codes Division","sourceType":"official","accessedOn":"2026-08-24T00:00:00.000Z","documentDate":"2023-10-01T00:00:00.000Z"},"constraints":[{"attribute":"assemblyRole","op":"in","value":["foundation-vent","retrofit-mesh","soffit-vent"]},{"attribute":"meshSizeInch","op":"between","value":[0.0625,0.125],"unit":"inch"},{"attribute":"corrosionResistant","op":"eq","value":true},{"attribute":"noncombustible","op":"eq","value":true}],"author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-24T00:00:00.000Z"},"applications":[{"id":"orsc-r327-ashland","title":"Ashland ORSC R327 adoption","instrumentId":"orsc-r327","placeId":"us-or-ashland","status":"active","geographicScope":"incorporated-boundary","scopeSummary":"Ashland Ordinance 3198 adopts the current ORSC including R327.4 within the City of Ashland, effective 1 October 2021. The City states its Wildfire Hazard Zone covers all city parcels; the codified text retains a written substantial-compliance waiver by the Building Official. Confirm the project path with the City.","adoptedOn":"2021-06-01T00:00:00.000Z","effectiveOn":"2021-10-01T00:00:00.000Z","requirementIds":["orsc-r327-class-b-roof-assembly","orsc-r327-multilayered-glazing","orsc-r327-noncombustible-exterior-wall","orsc-r327-noncombustible-gutters","orsc-r327-noncombustible-projection-underside","orsc-r327-noncombustible-walking-surface","orsc-r327-roof-profile-closure","orsc-r327-roof-valley-flashing","orsc-r327-vent-mesh"],"requirementCoverage":"partial","requirementCoverageSummary":"Nine normalized ORSC R327 construction atoms are joined. The local qualifying-lot language, written waiver, and City land-use triggers remain application context, not product-matching requirements.","localAmendments":[{"kind":"modification","section":"R327.4.1","summary":"Ashland adopts the qualifying-lot paragraph only for a lot in a locally identified wildfire hazard zone and requires the zone to be detailed in the local adopting ordinance.","source":{"title":"Ashland Ordinance 3198","url":"https://records.ashland.or.us/weblink/0/edoc/129893/Ord%203198.pdf","publisher":"City of Ashland","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z","documentDate":"2021-06-18T00:00:00.000Z"}},{"kind":"exception","section":"R327.4","summary":"The Ashland Building Official may waive R327.4 for a particular property by written determination that substantial compliance has achieved the section's purposes.","source":{"title":"Ashland Ordinance 3198","url":"https://records.ashland.or.us/weblink/0/edoc/129893/Ord%203198.pdf","publisher":"City of Ashland","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z","documentDate":"2021-06-18T00:00:00.000Z"}}],"supportingSources":[{"title":"Ashland Municipal Code 15.04.010 Code Adoption","url":"https://ashland.municipal.codes/AMC/15.04.010","publisher":"City of Ashland","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},{"title":"Oregon BCD Home hardening and wildfire hazard mitigation","url":"https://www.oregon.gov/bcd/codes-stand/pages/wildfire-hazard-mitigation.aspx","publisher":"Oregon Building Codes Division","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},{"title":"City of Ashland Fire Department FAQs","url":"https://www.ashlandoregon.gov/m/faq?cat=20#question-122","publisher":"City of Ashland Fire & Rescue","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}],"unresolvedPredicates":["project-type","official-confirmation"],"source":{"title":"Ashland Ordinance 3198","url":"https://records.ashland.or.us/weblink/0/edoc/129893/Ord%203198.pdf","publisher":"City of Ashland","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z","documentDate":"2021-06-18T00:00:00.000Z"},"author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-27T00:00:00.000Z"},{"id":"orsc-r327-bend","title":"Bend ORSC R327 application","instrumentId":"orsc-r327","placeId":"us-or-bend","status":"active","geographicScope":"incorporated-boundary","scopeSummary":"Current Bend Code 9.10.010 establishes the entire area within Bend city limits as the WUI Hazard Zone and applies ORSC R327 throughout that area. Ordinance NS-2552 was adopted on 15 April 2026 and codified in May 2026, but the opened sources do not establish its exact effective date or decide the boundary and project trigger for a parcel. Confirm with Building Safety.","adoptedOn":"2026-04-15T00:00:00.000Z","requirementIds":["orsc-r327-class-b-roof-assembly","orsc-r327-multilayered-glazing","orsc-r327-noncombustible-exterior-wall","orsc-r327-noncombustible-gutters","orsc-r327-noncombustible-projection-underside","orsc-r327-noncombustible-walking-surface","orsc-r327-roof-profile-closure","orsc-r327-roof-valley-flashing","orsc-r327-vent-mesh"],"requirementCoverage":"partial","requirementCoverageSummary":"Nine normalized ORSC R327 construction atoms are joined. Current code establishes active citywide adoption; parcel boundary, project classification, exact effective date, and permit confirmation remain application checks rather than product-matching rules.","supportingSources":[{"title":"City of Bend Ordinances","url":"https://bendoregon.gov/resources/city-codes-policies-ordinances-and-resolutions/ordinances/","publisher":"City of Bend","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},{"title":"City of Bend Ordinance NS-2552","url":"https://bendoregon.gov/wp-content/uploads/2026/04/NS-2552-Ordinance-1.pdf","publisher":"City of Bend","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},{"title":"Oregon BCD Home hardening and wildfire hazard mitigation","url":"https://www.oregon.gov/bcd/codes-stand/pages/wildfire-hazard-mitigation.aspx","publisher":"Oregon Building Codes Division","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}],"unresolvedPredicates":["official-boundary","project-type","effective-date","official-confirmation"],"source":{"title":"Bend Code 9.10.010, Specialty Codes","url":"https://bend.municipal.codes/BC/9.10.010","publisher":"City of Bend","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},"author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-27T00:00:00.000Z"},{"id":"orsc-r327-deschutes","title":"Deschutes County ORSC R327 application","instrumentId":"orsc-r327","placeId":"us-or-deschutes","status":"active","geographicScope":"unincorporated-county","scopeSummary":"Deschutes County states that ORSC R327 is mandatory throughout the unincorporated county for new ORSC dwellings and new accessory structures from 1 April 2026. The current County page excludes ordinary additions, repairs, remodels, manufactured dwellings, commercial-code buildings, and named small detached accessory structures. Confirm the parcel boundary, project classification, and permit determination.","adoptedOn":"2026-01-28T00:00:00.000Z","effectiveOn":"2026-04-01T00:00:00.000Z","requirementIds":["orsc-r327-class-b-roof-assembly","orsc-r327-multilayered-glazing","orsc-r327-noncombustible-exterior-wall","orsc-r327-noncombustible-gutters","orsc-r327-noncombustible-projection-underside","orsc-r327-noncombustible-walking-surface","orsc-r327-roof-profile-closure","orsc-r327-roof-valley-flashing","orsc-r327-vent-mesh"],"requirementCoverage":"partial","requirementCoverageSummary":"Nine normalized ORSC R327 construction atoms are joined. The current County surface closes the unincorporated-area, new-ORSC-dwelling/accessory, exclusion, and 1 April 2026 implementation questions at directory level; parcel boundary, project classification, and permit confirmation remain application checks.","supportingSources":[{"title":"Deschutes County Board meeting, Ordinance 2026-002 adoption","url":"https://meetings.municode.com/adaHtmlDocument/index?cc=DESCHUTES&ip=False&me=1687018f389a411696a9e3ad9484d5cd","publisher":"Deschutes County","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},{"title":"Oregon BCD Home hardening and wildfire hazard mitigation","url":"https://www.oregon.gov/bcd/codes-stand/pages/wildfire-hazard-mitigation.aspx","publisher":"Oregon Building Codes Division","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}],"unresolvedPredicates":["official-boundary","project-type","official-confirmation"],"source":{"title":"Deschutes County Fire Hardening Requirements (R327)","url":"https://www.deschutescounty.gov/1255/Fire-Hardening-Requirements-R327","publisher":"Deschutes County","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},"author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-27T00:00:00.000Z"},{"id":"orsc-r327-grants-pass","title":"Grants Pass ORSC R327 adoption","instrumentId":"orsc-r327","placeId":"us-or-grants-pass","status":"active","geographicScope":"incorporated-boundary","scopeSummary":"Grants Pass Municipal Code 9.04.010 adopts the ORSC and Section R327 into the City Building Code, while 9.04.200 requires new construction to conform to that code. Oregon BCD describes locally adopted R327 as applying to new one- and two-family dwellings and certain new accessory structures in locally designated wildfire hazard zones. Confirm the city boundary, hazard-zone and project trigger, effective date, and current permit path with Building Division.","adoptedOn":"2021-06-02T00:00:00.000Z","requirementIds":["orsc-r327-class-b-roof-assembly","orsc-r327-multilayered-glazing","orsc-r327-noncombustible-exterior-wall","orsc-r327-noncombustible-gutters","orsc-r327-noncombustible-projection-underside","orsc-r327-noncombustible-walking-surface","orsc-r327-roof-profile-closure","orsc-r327-roof-valley-flashing","orsc-r327-vent-mesh"],"requirementCoverage":"partial","requirementCoverageSummary":"Nine normalized ORSC R327 construction atoms are joined. The local hazard-zone and project triggers, effective date, and current permit determination remain application checks rather than product-matching requirements.","supportingSources":[{"title":"Grants Pass Ordinance Index, 2000–current","url":"https://www.grantspassoregon.gov/DocumentCenter/View/34910/Ordinance-Index-2000-current","publisher":"City of Grants Pass","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},{"title":"Oregon BCD Home hardening and wildfire hazard mitigation","url":"https://www.oregon.gov/bcd/codes-stand/pages/wildfire-hazard-mitigation.aspx","publisher":"Oregon Building Codes Division","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},{"title":"Current Building Codes in Effect","url":"https://www.grantspassoregon.gov/234/Current-Building-Codes-in-Effect","publisher":"City of Grants Pass","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}],"unresolvedPredicates":["official-boundary","project-type","effective-date","official-confirmation"],"source":{"title":"Grants Pass Municipal Code Title 9, Buildings and Construction","url":"https://www.grantspassoregon.gov/DocumentCenter/View/42","publisher":"City of Grants Pass","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},"author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-27T00:00:00.000Z"},{"id":"orsc-r327-oregon-local-option","title":"Oregon R327 local-option framework","instrumentId":"orsc-r327","placeId":"us-or","status":"available-for-local-adoption","geographicScope":"unknown","scopeSummary":"Oregon makes ORSC Section R327 available for local adoption; this state record does not make the section a statewide WUI construction mandate.","requirementIds":["orsc-r327-class-b-roof-assembly","orsc-r327-multilayered-glazing","orsc-r327-noncombustible-exterior-wall","orsc-r327-noncombustible-gutters","orsc-r327-noncombustible-projection-underside","orsc-r327-noncombustible-walking-surface","orsc-r327-roof-profile-closure","orsc-r327-roof-valley-flashing","orsc-r327-vent-mesh"],"requirementCoverage":"partial","unresolvedPredicates":["local-adoption","official-boundary","project-type","official-confirmation"],"source":{"title":"Oregon BCD Home hardening and wildfire hazard mitigation","url":"https://www.oregon.gov/bcd/codes-stand/pages/wildfire-hazard-mitigation.aspx","publisher":"Oregon Building Codes Division","sourceType":"official","accessedOn":"2026-08-23T00:00:00.000Z"},"author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-23T00:00:00.000Z"},{"id":"orsc-r327-sisters","title":"Sisters ORSC R327 application","instrumentId":"orsc-r327","placeId":"us-or-sisters","status":"active","geographicScope":"incorporated-boundary","scopeSummary":"Sisters City Code 15.05.010 adopts ORSC R327 throughout the City and assigns administration to Deschutes County Building Safety. Current City and County permit pages state that it is mandatory for new ORSC dwellings and new accessory structures from 1 April 2026. Confirm the incorporated boundary, project classification, and permit determination.","adoptedOn":"2025-11-19T00:00:00.000Z","effectiveOn":"2026-04-01T00:00:00.000Z","requirementIds":["orsc-r327-class-b-roof-assembly","orsc-r327-multilayered-glazing","orsc-r327-noncombustible-exterior-wall","orsc-r327-noncombustible-gutters","orsc-r327-noncombustible-projection-underside","orsc-r327-noncombustible-walking-surface","orsc-r327-roof-profile-closure","orsc-r327-roof-valley-flashing","orsc-r327-vent-mesh"],"requirementCoverage":"partial","requirementCoverageSummary":"Nine normalized ORSC R327 construction atoms are joined. The current local sources close the citywide, new-ORSC-dwelling/accessory, and 1 April 2026 implementation questions at directory level; parcel boundary, project classification, and permit confirmation remain application checks.","supportingSources":[{"title":"City of Sisters Building Permits","url":"https://www.ci.sisters.or.us/community-development/page/building-permits","publisher":"City of Sisters","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},{"title":"Sisters City Council minutes, 19 November 2025","url":"https://www.ci.sisters.or.us/media/32841","publisher":"City of Sisters","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},{"title":"Deschutes County Fire Hardening Requirements (R327)","url":"https://www.deschutescounty.gov/1255/Fire-Hardening-Requirements-R327","publisher":"Deschutes County","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},{"title":"Oregon BCD Home hardening and wildfire hazard mitigation","url":"https://www.oregon.gov/bcd/codes-stand/pages/wildfire-hazard-mitigation.aspx","publisher":"Oregon Building Codes Division","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"}],"unresolvedPredicates":["official-boundary","project-type","official-confirmation"],"source":{"title":"Sisters City Code 15.05.010 (Ord. 545)","url":"https://www.codepublishing.com/OR/Sisters/html/Sisters15/Sisters1505.html","publisher":"City of Sisters","sourceType":"official","accessedOn":"2026-08-27T00:00:00.000Z"},"author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-27T00:00:00.000Z"}],"products":[{"id":"firestorm-embermesh-roll","name":"FireStorm EmberMesh roll","url":"/materials/firestorm-embermesh-roll/","categories":["vents"],"complianceStatus":"attribute-match","documentedAttributes":[{"attribute":"meshSizeInch","value":0.0657,"source":{"title":"FireStorm EmberMesh sales sheet","url":"https://firestormbuildingproducts.com/wp-content/uploads/2025/01/Fire-Storm-Ember-Mesh-Sales-Sheet-opt.pdf","publisher":"New Cal Metals, Inc.","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null},{"attribute":"assemblyRole","value":"retrofit-mesh","source":{"title":"FireStorm EmberMesh sales sheet","url":"https://firestormbuildingproducts.com/wp-content/uploads/2025/01/Fire-Storm-Ember-Mesh-Sales-Sheet-opt.pdf","publisher":"New Cal Metals, Inc.","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null},{"attribute":"corrosionResistant","value":true,"source":{"title":"FireStorm EmberMesh sales sheet","url":"https://firestormbuildingproducts.com/wp-content/uploads/2025/01/Fire-Storm-Ember-Mesh-Sales-Sheet-opt.pdf","publisher":"New Cal Metals, Inc.","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null},{"attribute":"noncombustible","value":true,"source":{"title":"Fire-resistant mesh and EmberMesh installation","url":"https://firestormbuildingproducts.com/fire-resistant-mesh/","publisher":"New Cal Metals, Inc.","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null}]},{"id":"wildfire-defense-mesh-75-black-roll","name":"Wildfire Defense Mesh 75 black roll","url":"/materials/wildfire-defense-mesh-75-black-roll/","categories":["vents"],"complianceStatus":"attribute-match","documentedAttributes":[{"attribute":"meshSizeInch","value":0.1072,"source":{"title":"Wildfire Defense Mesh 75 black roll","url":"https://www.wildfiredefensemesh.com/wdm-product/wdm-75-mesh-roll-black","publisher":"Bushfire Mitigation Solutions","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null},{"attribute":"assemblyRole","value":"retrofit-mesh","source":{"title":"Wildfire Defense Mesh 75 black roll","url":"https://www.wildfiredefensemesh.com/wdm-product/wdm-75-mesh-roll-black","publisher":"Bushfire Mitigation Solutions","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null},{"attribute":"corrosionResistant","value":true,"source":{"title":"Wildfire Defense Mesh 75 black roll","url":"https://www.wildfiredefensemesh.com/wdm-product/wdm-75-mesh-roll-black","publisher":"Bushfire Mitigation Solutions","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null},{"attribute":"noncombustible","value":true,"source":{"title":"Wildfire Defense Mesh frequently asked questions","url":"https://www.wildfiredefensemesh.com/faq","publisher":"Bushfire Mitigation Solutions","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null}]}],"matchContract":"Products appear only when their cited fields satisfy this requirement's normalized constraints. Application scope and unresolved predicates remain separate; an attribute match is not a permit decision."}