{"id":"orsc-r327-noncombustible-exterior-wall","license":"CC-BY-4.0","data":{"title":"Oregon R327 noncombustible exterior-wall path","shortName":"ORSC R327 noncombustible wall","summary":"Where locally adopted, Oregon R327 includes noncombustible material as one path for an exterior wall covering or wall assembly.","framing":"This record covers only the noncombustible path. Ignition-resistant material, heavy timber, log walls, ASTM E2707-tested assemblies, and the named gypsum-backed exceptions are separate paths. Product material does not replace the full wall-assembly review.","kind":"code","instrumentId":"orsc-r327","jurisdiction":"Oregon local jurisdictions that adopted ORSC R327","placeIds":["us-or"],"appliesToCategories":["siding"],"quotedText":"The exterior wall covering or wall assembly shall comply with one of the following requirements: 1. Noncombustible material.","source":{"title":"2023 Oregon Residential Specialty Code R327 amendments, Section R327.3.3","url":"https://www.oregon.gov/bcd/codes-stand/Documents/23orsc-r327-amend.pdf","publisher":"Oregon Building Codes Division","sourceType":"official","accessedOn":"2026-08-25T00:00:00.000Z","documentDate":"2025-08-05T00:00:00.000Z"},"constraints":[{"attribute":"noncombustible","op":"eq","value":true}],"relatedStandards":["astm-e136"],"author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-25T00:00:00.000Z"},"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":"anenda-systems-inc-al13-aluminum-plank-system","name":"AL13® Plank System","url":"/materials/anenda-systems-inc-al13-aluminum-plank-system/","categories":["siding"],"complianceStatus":"listed","documentedAttributes":[{"attribute":"noncombustible","value":true,"source":{"title":"AL13 Plank System product page and technical downloads","url":"https://al13.com/plank-system/","publisher":"AL13 Architectural Systems","accessedOn":"2026-08-25T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null}]},{"id":"clicklad-aluminum-siding","name":"Clicklad Closed-Gap aluminum cladding system","url":"/materials/clicklad-aluminum-siding/","categories":["siding"],"complianceStatus":"listed","documentedAttributes":[{"attribute":"noncombustible","value":true,"source":{"title":"Closed-Gap Click Cladding System specification sheet","url":"https://clicklad.com/wp-content/uploads/2025/11/Closed-Gap-Click-Cladding-System-.pdf","publisher":"Clicklad Corporation","accessedOn":"2026-08-25T00:00:00.000Z","documentDate":"2025-11-01T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null}]},{"id":"james-hardie-building-products-inc-8140-2026-0005","name":"Hardie® Plank lap siding","url":"/materials/james-hardie-building-products-inc-8140-2026-0005/","categories":["siding"],"complianceStatus":"listed","documentedAttributes":[{"attribute":"noncombustible","value":true,"source":{"title":"Hardie Plank lap siding product page","url":"https://www.jameshardie.com/product-catalog/undefined/hardie-plank-lap-siding/","publisher":"James Hardie Building Products","accessedOn":"2026-08-25T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null}]},{"id":"james-hardie-building-products-inc-hardie-textured-panel-noncombustible","name":"Hardie® Textured Panel, noncombustible fiber-cement panel siding, 5/16\" thick","url":"/materials/james-hardie-building-products-inc-hardie-textured-panel-noncombustible/","categories":["siding"],"complianceStatus":"listed","documentedAttributes":[{"attribute":"noncombustible","value":true,"source":{"title":"CAL FIRE OSFM Building Materials Listing — 8140-2026:0502","url":"https://calfire.govmotus.org/BMLSearch/Index","publisher":"CAL FIRE OSFM","accessedOn":"2026-08-26T00:00:00.000Z","sourceType":"official-listing"},"documentLocation":"Listing 8140-2026:0502, Description field","excerpt":"*Hardie® Architectural Panel, noncombustible fiber-cement panel siding, 5/16\" thick."}]},{"id":"james-hardie-building-products-inc","name":"JAMES HARDIE BUILDING PRODUCTS, INC. (8140-2026:0001)","url":"/materials/james-hardie-building-products-inc/","categories":["siding"],"complianceStatus":"listed","documentedAttributes":[{"attribute":"noncombustible","value":true,"source":{"title":"Hardie Artisan Siding product page","url":"https://www.jameshardie.com/product-catalog/exterior-siding-products/hardie-artisan-siding/v-groove/primed-for-paint/","publisher":"James Hardie Building Products, Inc.","sourceType":"manufacturer","accessedOn":"2026-08-26T00:00:00.000Z"},"documentLocation":null,"excerpt":null}]},{"id":"james-hardie-building-products-inc-8140-2026-0004","name":"JAMES HARDIE BUILDING PRODUCTS, INC. (8140-2026:0004)","url":"/materials/james-hardie-building-products-inc-8140-2026-0004/","categories":["siding"],"complianceStatus":"listed","documentedAttributes":[{"attribute":"noncombustible","value":true,"source":{"title":"Hardie Shingle Siding product page","url":"https://www.jameshardie.com/product-catalog/exterior-siding-products/hardie-shingle-siding/straight-edge-panel/statement-collection-colors/","publisher":"James Hardie Building Products, Inc.","sourceType":"manufacturer","accessedOn":"2026-08-26T00:00:00.000Z"},"documentLocation":null,"excerpt":null}]},{"id":"james-hardie-building-products-inc-8140-2026-0500","name":"JAMES HARDIE BUILDING PRODUCTS, INC. (8140-2026:0500)","url":"/materials/james-hardie-building-products-inc-8140-2026-0500/","categories":["siding"],"complianceStatus":"listed","documentedAttributes":[{"attribute":"noncombustible","value":true,"source":{"title":"Hardie Artisan Siding product page","url":"https://www.jameshardie.com/product-catalog/exterior-siding-products/hardie-artisan-siding/v-groove/primed-for-paint/","publisher":"James Hardie Building Products, Inc.","sourceType":"manufacturer","accessedOn":"2026-08-26T00:00:00.000Z"},"documentLocation":null,"excerpt":null}]},{"id":"longboard-architectural-products-inc-model-longboard-exterior-aluminum","name":"Longboard® 6-inch exterior aluminum siding","url":"/materials/longboard-architectural-products-inc-model-longboard-exterior-aluminum/","categories":["siding"],"complianceStatus":"listed","documentedAttributes":[{"attribute":"noncombustible","value":true,"source":{"title":"Longboard 6-inch Lap Siding product page","url":"https://longboardproducts.com/exterior-products/siding/lap-siding","publisher":"Longboard Architectural Products Inc.","accessedOn":"2026-08-25T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null}]},{"id":"rockwool-comfortboard-80-exterior-continuous-insulation","name":"ROCKWOOL Comfortboard 80 exterior continuous insulation","url":"/materials/rockwool-comfortboard-80-exterior-continuous-insulation/","categories":["siding"],"complianceStatus":"listed","documentedAttributes":[{"attribute":"noncombustible","value":true,"source":{"title":"Comfortboard 80 exterior continuous insulation technical data sheet","url":"https://www.rockwool.com/siteassets/o2-rockwool/documentation/technical-data-sheets/residential/comfortboard-80-non-structural-sheathing-continuous-insulation-techdata.pdf","publisher":"ROCKWOOL","accessedOn":"2026-08-25T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null}]},{"id":"owens-corning-thermafiber-rainbarrier-high-compressive-80-110","name":"Thermafiber RainBarrier High Compressive 80 and 110 exterior insulation","url":"/materials/owens-corning-thermafiber-rainbarrier-high-compressive-80-110/","categories":["siding"],"complianceStatus":"listed","documentedAttributes":[{"attribute":"noncombustible","value":true,"source":{"title":"Thermafiber RainBarrier ci High Compressive (80)","url":"https://www.owenscorning.com/en-us/insulation/products/rain-barrier-ci-80","publisher":"Owens Corning","accessedOn":"2026-08-25T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null},{"attribute":"noncombustible","value":true,"source":{"title":"Thermafiber RainBarrier ci High Compressive Plus (110)","url":"https://www.owenscorning.com/en-us/insulation/products/rainbarrier-ci-plus-110","publisher":"Owens Corning","accessedOn":"2026-08-25T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null}]},{"id":"woodsyn-llc-optimboardtm","name":"WoodSyn OptimBoard™ wood-wool cement sheathing","url":"/materials/woodsyn-llc-optimboardtm/","categories":["siding"],"complianceStatus":"listed","documentedAttributes":[{"attribute":"noncombustible","value":true,"source":{"title":"WoodSyn OptimBoard product overview","url":"https://woodsyn.com/products","publisher":"WoodSyn, LLC","accessedOn":"2026-08-25T00:00:00.000Z","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."}