{"id":"orsc-r327-class-b-roof-assembly","license":"CC-BY-4.0","data":{"title":"Oregon R327 Class B-or-better roof-assembly path","shortName":"ORSC R327 Class B roof floor","summary":"Where locally adopted, Oregon R327 allows named roof coverings or other approved roofing deemed equivalent to at least a Class B-rated roof assembly.","framing":"This record matches a documented Class A or Class B roof assembly. The code also names covering types that the building official may accept as equivalent and separately prohibits wood shingle and shake roofs. A covering name alone does not document the assembly.","kind":"code","instrumentId":"orsc-r327","jurisdiction":"Oregon local jurisdictions that adopted ORSC R327","placeIds":["us-or"],"appliesToCategories":["roofing"],"quotedText":"other approved roofing that is deemed to be equivalent to a minimum Class B-rated roof assembly. Wood shingle and shake roofs are not permitted","source":{"title":"2023 Oregon Residential Specialty Code R327 amendments, Section R327.3","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":"assemblyRole","op":"eq","value":"roof-assembly"},{"attribute":"fireRating","op":"in","value":["class-a","class-b"]}],"relatedStandards":["astm-e108-ul-790"],"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":"polyglass-usa-inc-elastoflex-sa-p-fr-polyflex-sa-p-fr-elastobase-v","name":"Elastoflex SA P FR, Polyflex SA P FR, Elastobase V, Elastoflex SA V FR","url":"/materials/polyglass-usa-inc-elastoflex-sa-p-fr-polyflex-sa-p-fr-elastobase-v/","categories":["roofing"],"complianceStatus":"listed","documentedAttributes":[{"attribute":"assemblyRole","value":"roof-assembly","source":{"title":"CAL FIRE OSFM listing 8180-2305:0505","url":"https://calfire.govmotus.org/GOVFirePublicReport/ReportPublic?AppNum=CF24019388BML&type=BMLLINGLISTNEW","publisher":"CAL FIRE OSFM","accessedOn":"2026-08-26T00:00:00.000Z","sourceType":"official-listing"},"documentLocation":"Listing 8180-2305:0505, Design field","excerpt":"Elastoflex SA P FR, Polyflex SA P FR, Elastobase V, Elastoflex SA V FR, and Elastoflex SA V Plus FR are modified bitumen products that can be layered to form a Class A Roofing Systems."},{"attribute":"fireRating","value":"class-a","source":{"title":"CAL FIRE OSFM listing 8180-2305:0505","url":"https://calfire.govmotus.org/GOVFirePublicReport/ReportPublic?AppNum=CF24019388BML&type=BMLLINGLISTNEW","publisher":"CAL FIRE OSFM","accessedOn":"2026-08-26T00:00:00.000Z","sourceType":"official-listing"},"documentLocation":"Listing 8180-2305:0505, Design field","excerpt":"Approved Class A system."}]},{"id":"owens-corning-titanium-fr-aluminum-panel-assembly","name":"Owens Corning Titanium FR 0.032-inch aluminum-panel roof assembly","url":"/materials/owens-corning-titanium-fr-aluminum-panel-assembly/","categories":["roofing"],"complianceStatus":"attribute-match","documentedAttributes":[{"attribute":"assemblyRole","value":"roof-assembly","source":{"title":"Titanium FR installation instructions","url":"https://www.owenscorning.com/en-us/roofing/install-instructions/titanium-fr","publisher":"Owens Corning Roofing and Asphalt, LLC","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null},{"attribute":"fireRating","value":"class-a","source":{"title":"Titanium FR installation instructions","url":"https://www.owenscorning.com/en-us/roofing/install-instructions/titanium-fr","publisher":"Owens Corning Roofing and Asphalt, LLC","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null}]},{"id":"owens-corning-titanium-fr-steel-panel-assembly","name":"Owens Corning Titanium FR 26-gauge steel-panel roof assembly","url":"/materials/owens-corning-titanium-fr-steel-panel-assembly/","categories":["roofing"],"complianceStatus":"attribute-match","documentedAttributes":[{"attribute":"assemblyRole","value":"roof-assembly","source":{"title":"Titanium FR installation instructions","url":"https://www.owenscorning.com/en-us/roofing/install-instructions/titanium-fr","publisher":"Owens Corning Roofing and Asphalt, LLC","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null},{"attribute":"fireRating","value":"class-a","source":{"title":"Titanium FR installation instructions","url":"https://www.owenscorning.com/en-us/roofing/install-instructions/titanium-fr","publisher":"Owens Corning Roofing and Asphalt, LLC","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null}]},{"id":"owens-corning-titanium-fr-asphalt-shingle-assembly","name":"Owens Corning Titanium FR asphalt-shingle roof assembly","url":"/materials/owens-corning-titanium-fr-asphalt-shingle-assembly/","categories":["roofing"],"complianceStatus":"attribute-match","documentedAttributes":[{"attribute":"assemblyRole","value":"roof-assembly","source":{"title":"Titanium FR installation instructions","url":"https://www.owenscorning.com/en-us/roofing/install-instructions/titanium-fr","publisher":"Owens Corning Roofing and Asphalt, LLC","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null},{"attribute":"fireRating","value":"class-a","source":{"title":"Titanium FR installation instructions","url":"https://www.owenscorning.com/en-us/roofing/install-instructions/titanium-fr","publisher":"Owens Corning Roofing and Asphalt, LLC","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null}]},{"id":"owens-corning-titanium-fr-tile-assembly","name":"Owens Corning Titanium FR concrete-or-clay-tile roof assembly","url":"/materials/owens-corning-titanium-fr-tile-assembly/","categories":["roofing"],"complianceStatus":"attribute-match","documentedAttributes":[{"attribute":"assemblyRole","value":"roof-assembly","source":{"title":"Titanium FR installation instructions","url":"https://www.owenscorning.com/en-us/roofing/install-instructions/titanium-fr","publisher":"Owens Corning Roofing and Asphalt, LLC","accessedOn":"2026-08-24T00:00:00.000Z","sourceType":"manufacturer"},"documentLocation":null,"excerpt":null},{"attribute":"fireRating","value":"class-a","source":{"title":"Titanium FR installation instructions","url":"https://www.owenscorning.com/en-us/roofing/install-instructions/titanium-fr","publisher":"Owens Corning Roofing and Asphalt, LLC","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."}