{"id":"iwuic-2024-austin-zone-a-multilayered-glazing","license":"CC-BY-4.0","data":{"title":"Austin 2024 IWUIC Zone A multilayered-glazing path","shortName":"Austin Zone A multilayered glazing","summary":"Austin retains the model multilayered-glazing path for exterior windows, glazed doors, and skylights in Proximity Zone A.","framing":"This record covers opening role and pane count. Other glazing paths, the complete opening schedule, official zone, and project scope remain checks.","kind":"code","instrumentId":"iwuic-2024","jurisdiction":"City of Austin Proximity Zone A","placeIds":["us-tx-austin"],"appliesToCategories":["windows","doors"],"quotedText":"shall be tempered glass, multilayered glazed panels, glass block or have a fire protection rating","source":{"title":"2024 International Wildland-Urban Interface Code, Section 504.8","url":"https://codes.iccsafe.org/content/IWUIC2024P1/chapter-5-special-building-construction-regulations","publisher":"International Code Council","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2023-08-01T00:00:00.000Z"},"constraints":[{"attribute":"assemblyRole","op":"in","value":["exterior-window","glazed-door","skylight"]},{"attribute":"paneCount","op":"gte","value":2}],"relatedStandards":["iwuic"],"author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-26T00:00:00.000Z"},"applications":[{"id":"iwuic-2024-austin","title":"Austin 2024 IWUIC proximity-zone application","instrumentId":"iwuic-2024","placeId":"us-tx-austin","status":"active","geographicScope":"authority-area","scopeSummary":"Austin applies its amended 2024 IWUIC to submissions on or after July 10, 2025 in City full-purpose and limited-purpose areas, subject to transition, official WUI, proximity-zone, project, and mixed-jurisdiction determinations.","adoptedOn":"2025-04-10T00:00:00.000Z","effectiveOn":"2025-07-10T00:00:00.000Z","requirementIds":["iwuic-2024-class-1-2-class-a-roof-assembly","iwuic-2024-class-1-2-noncombustible-exterior-wall","iwuic-2024-class-1-wall-base-protection","iwuic-2024-roof-profile-closure","iwuic-2024-roof-valley-flashing","iwuic-2024-vent-mesh","iwuic-2024-noncombustible-gutters","iwuic-2024-austin-zone-a-20-minute-exterior-door","iwuic-2024-austin-zone-a-noncombustible-exterior-door","iwuic-2024-austin-zone-a-solid-core-exterior-door","iwuic-2024-austin-zone-a-multilayered-glazing","iwuic-2024-austin-zones-b-c-multilayered-skylight","iwuic-2024-austin-zone-a-noncombustible-appendage","iwuic-2024-austin-zone-b-30-foot-noncombustible-appendage","iwuic-2024-austin-zone-c-10-foot-noncombustible-appendage","iwuic-2024-austin-zone-a-noncombustible-eave","iwuic-2024-austin-zones-b-c-noncombustible-eave","iwuic-2024-austin-zones-b-c-solid-eave-enclosure","iwuic-2024-austin-zone-c-class-a-roof-assembly","iwuic-2024-austin-zones-a-b-c-gutter-noncorrosive-material"],"requirementCoverage":"complete","requirementCoverageSummary":"All 15 normalized model material rows were reviewed against the enacted Austin amendments; this is complete only for that model crosswalk, not full-code normalization or a finding that every row applies to one project.","requirementScopes":[{"requirementId":"iwuic-2024-class-1-2-class-a-roof-assembly","scopeKeys":["proximity-zone-a","proximity-zone-b"],"scopeSummary":"The unchanged Class A roof atom is joined only for Austin Proximity Zones A and B.","sourceSections":["504.2","505.2"]},{"requirementId":"iwuic-2024-class-1-2-noncombustible-exterior-wall","scopeKeys":["proximity-zone-a","proximity-zone-b"],"scopeSummary":"The unchanged noncombustible exterior-wall path is joined only for Austin Proximity Zones A and B.","sourceSections":["504.5","505.5"]},{"requirementId":"iwuic-2024-class-1-wall-base-protection","scopeKeys":["proximity-zone-a"],"scopeSummary":"The unchanged six-inch wall-base path is joined only for Austin Proximity Zone A.","sourceSections":["504.5.1"]},{"requirementId":"iwuic-2024-roof-profile-closure","scopeKeys":["proximity-zone-a","proximity-zone-b","proximity-zone-c"],"scopeSummary":"The roof-profile closure atom is retained across Austin Proximity Zones A, B, and C.","sourceSections":["504.2","505.2","506.2"]},{"requirementId":"iwuic-2024-roof-valley-flashing","scopeKeys":["proximity-zone-a","proximity-zone-b","proximity-zone-c"],"scopeSummary":"The metal valley-flashing atom is retained across all zones, with local woven-valley alternatives remaining separate.","sourceSections":["504.2.1","505.2.1","506.2.1"]},{"requirementId":"iwuic-2024-vent-mesh","scopeKeys":["proximity-zone-a","proximity-zone-b","proximity-zone-c"],"scopeSummary":"The one-eighth-inch mesh path remains available across all zones; Zone C also has a listed-vent alternative.","sourceSections":["504.10.2","505.10.2","506.5.1","506.5.2"]},{"requirementId":"iwuic-2024-austin-zone-a-20-minute-exterior-door","scopeKeys":["proximity-zone-a"],"scopeSummary":"The 20-minute exterior-door path survives in Zone A only because Austin deletes Section 505.9.","sourceSections":["504.9","25-12-181(B)"]},{"requirementId":"iwuic-2024-austin-zone-a-noncombustible-exterior-door","scopeKeys":["proximity-zone-a"],"scopeSummary":"The noncombustible exterior-door path survives in Zone A only because Austin deletes Section 505.9.","sourceSections":["504.9","25-12-181(B)"]},{"requirementId":"iwuic-2024-austin-zone-a-solid-core-exterior-door","scopeKeys":["proximity-zone-a"],"scopeSummary":"The solid-core exterior-door path survives in Zone A only because Austin deletes Section 505.9.","sourceSections":["504.9","25-12-181(B)"]},{"requirementId":"iwuic-2024-austin-zone-a-multilayered-glazing","scopeKeys":["proximity-zone-a"],"scopeSummary":"Zone A retains the broad exterior-opening multilayered-glazing path in Section 504.8.","sourceSections":["504.8"]},{"requirementId":"iwuic-2024-austin-zones-b-c-multilayered-skylight","scopeKeys":["proximity-zone-b","proximity-zone-c"],"scopeSummary":"Austin's rewritten Zones B and C glazing text limits this multilayered path to skylights.","sourceSections":["505.8","506.7"]},{"requirementId":"iwuic-2024-austin-zone-a-noncombustible-appendage","scopeKeys":["proximity-zone-a"],"scopeSummary":"Zone A covers attached appendages and detached unenclosed accessory structures without a distance predicate.","sourceSections":["504.7"]},{"requirementId":"iwuic-2024-austin-zone-b-30-foot-noncombustible-appendage","scopeKeys":["proximity-zone-b","within-30-feet-of-habitable-space"],"scopeSummary":"Zone B reaches an unenclosed appendage or structure attached to or within 30 feet of habitable space.","sourceSections":["505.7"]},{"requirementId":"iwuic-2024-austin-zone-c-10-foot-noncombustible-appendage","scopeKeys":["proximity-zone-c","within-10-feet-of-habitable-space"],"scopeSummary":"Zone C reaches an unenclosed appendage or structure attached to or within 10 feet of habitable space.","sourceSections":["506.6"]},{"requirementId":"iwuic-2024-austin-zone-a-noncombustible-eave","scopeKeys":["proximity-zone-a"],"scopeSummary":"Austin Zone A retains the noncombustible ignition-resistant eave path through Sections 503.2.1 and 504.3.1.","sourceSections":["503.2.1","504.3.1"]},{"requirementId":"iwuic-2024-austin-zones-b-c-noncombustible-eave","scopeKeys":["proximity-zone-b","proximity-zone-c"],"scopeSummary":"Austin expressly permits the noncombustible enclosed-eave path in Zones B and C.","sourceSections":["505.3.1","506.4.1"]},{"requirementId":"iwuic-2024-austin-zones-b-c-solid-eave-enclosure","scopeKeys":["proximity-zone-b","proximity-zone-c"],"scopeSummary":"The three-quarter-inch solid eave-enclosure path is joined only for Austin Zones B and C.","sourceSections":["505.3.1","506.4.1"]},{"requirementId":"iwuic-2024-austin-zone-c-class-a-roof-assembly","scopeKeys":["proximity-zone-c"],"scopeSummary":"Austin replaces the model Class 3 Class B minimum with a Class A roof assembly in Zone C.","sourceSections":["506.2"]},{"requirementId":"iwuic-2024-noncombustible-gutters","scopeKeys":["proximity-zone-a","proximity-zone-b","proximity-zone-c"],"scopeSummary":"The unchanged model noncombustible gutter-and-downspout atom applies in every Austin proximity zone.","sourceSections":["504.4","505.4","506.4.6"]},{"requirementId":"iwuic-2024-austin-zones-a-b-c-gutter-noncorrosive-material","scopeKeys":["proximity-zone-a","proximity-zone-b","proximity-zone-c"],"scopeSummary":"Austin's added noncorrosive-material condition applies to gutters—not downspouts—in every zone; the approved debris-control means remains an assembly and official check.","sourceSections":["504.4","505.4","506.4.6"]}],"requirementCrosswalk":[{"modelRequirementId":"iwuic-2024-class-1-2-20-minute-exterior-door","disposition":"locally-modified","replacementRequirementIds":["iwuic-2024-austin-zone-a-20-minute-exterior-door"],"scopeSummary":"Section 504.9 survives for Zone A, but Austin deletes Section 505.9, so the combined model row is replaced.","sourceSections":["504.9","505.9","25-12-181(B)"]},{"modelRequirementId":"iwuic-2024-class-1-2-class-a-roof-assembly","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"The model Class A roof atom remains unchanged for Austin Zones A and B.","sourceSections":["504.2","505.2"]},{"modelRequirementId":"iwuic-2024-class-1-2-multilayered-glazing","disposition":"locally-modified","replacementRequirementIds":["iwuic-2024-austin-zone-a-multilayered-glazing","iwuic-2024-austin-zones-b-c-multilayered-skylight"],"scopeSummary":"Zone A retains the broad path, while rewritten Zones B and C restrict the path to skylights.","sourceSections":["504.8","505.8","506.7"]},{"modelRequirementId":"iwuic-2024-class-1-2-noncombustible-deck","disposition":"locally-modified","replacementRequirementIds":["iwuic-2024-austin-zone-a-noncombustible-appendage","iwuic-2024-austin-zone-b-30-foot-noncombustible-appendage","iwuic-2024-austin-zone-c-10-foot-noncombustible-appendage"],"scopeSummary":"Austin rewrites appendage reach separately for Zone A, Zone B within 30 feet, and Zone C within 10 feet.","sourceSections":["504.7","505.7","506.6"]},{"modelRequirementId":"iwuic-2024-class-1-2-noncombustible-exterior-door","disposition":"locally-modified","replacementRequirementIds":["iwuic-2024-austin-zone-a-noncombustible-exterior-door"],"scopeSummary":"Section 504.9 survives for Zone A, but Austin deletes Section 505.9, so the combined model row is replaced.","sourceSections":["504.9","505.9","25-12-181(B)"]},{"modelRequirementId":"iwuic-2024-class-1-2-noncombustible-exterior-wall","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"The model noncombustible exterior-wall atom remains unchanged for Austin Zones A and B.","sourceSections":["504.5","505.5"]},{"modelRequirementId":"iwuic-2024-class-1-2-solid-core-exterior-door","disposition":"locally-modified","replacementRequirementIds":["iwuic-2024-austin-zone-a-solid-core-exterior-door"],"scopeSummary":"Section 504.9 survives for Zone A, but Austin deletes Section 505.9, so the combined model row is replaced.","sourceSections":["504.9","505.9","25-12-181(B)"]},{"modelRequirementId":"iwuic-2024-class-1-noncombustible-eave","disposition":"locally-modified","replacementRequirementIds":["iwuic-2024-austin-zone-a-noncombustible-eave","iwuic-2024-austin-zones-b-c-noncombustible-eave"],"scopeSummary":"Austin rewrites eave construction by proximity zone; the noncombustible path is normalized separately for Zone A and Zones B/C.","sourceSections":["504.3","504.3.1","505.3.1","506.4.1"]},{"modelRequirementId":"iwuic-2024-class-1-wall-base-protection","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"The model wall-base protection atom remains unchanged for Austin Zone A.","sourceSections":["504.5.1"]},{"modelRequirementId":"iwuic-2024-class-2-solid-eave-enclosure","disposition":"locally-modified","replacementRequirementIds":["iwuic-2024-austin-zones-b-c-solid-eave-enclosure"],"scopeSummary":"Austin rewrites Zone B eaves and adds matching Zone C text, so the model row is replaced with local scope.","sourceSections":["505.3","505.3.1","506.4.1"]},{"modelRequirementId":"iwuic-2024-class-3-class-b-roof-assembly","disposition":"deleted-and-replaced","replacementRequirementIds":["iwuic-2024-austin-zone-c-class-a-roof-assembly"],"scopeSummary":"Austin rewrites Section 506.2 to require Class A in Zone C instead of the model Class B minimum.","sourceSections":["506.2"]},{"modelRequirementId":"iwuic-2024-noncombustible-gutters","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"Austin retains the model noncombustible gutter-and-downspout sentence in all three zones, then adds a separate gutter-only condition.","sourceSections":["504.4","505.4","506.4.6"]},{"modelRequirementId":"iwuic-2024-roof-profile-closure","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"The profile-space closure atom is retained in Zones A and B and repeated in rewritten Zone C Section 506.2.","sourceSections":["504.2","505.2","506.2"]},{"modelRequirementId":"iwuic-2024-roof-valley-flashing","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"The model metal valley-flashing atom remains, with local woven-valley alternatives layered alongside it.","sourceSections":["504.2.1","505.2.1","506.2.1"]},{"modelRequirementId":"iwuic-2024-vent-mesh","disposition":"adopted-unchanged","replacementRequirementIds":[],"scopeSummary":"The prescriptive mesh atom remains in every zone; Zone C additionally offers a listed-vent path.","sourceSections":["504.10.2","505.10.2","506.5.1","506.5.2"]}],"map":{"status":"linked-official-tool","summary":"Austin's official map is a starting point; onsite measurement and the code official determine WUI and proximity-zone results.","url":"https://austin.maps.arcgis.com/apps/instant/media/index.html?appid=0c0889a8bac34cf4a1ca6ce6777c3937","source":{"title":"Austin WUI Code map","url":"https://austin.maps.arcgis.com/apps/instant/media/index.html?appid=0c0889a8bac34cf4a1ca6ce6777c3937","publisher":"City of Austin","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z"}},"projectTriggers":[{"summary":"Chapter 5 reaches a building or structure constructed, modified, located in, or relocated into a designated WUI area.","sourceSections":["503.1"],"source":{"title":"Austin Ordinance 20250410-041","url":"https://services.austintexas.gov/edims/document.cfm?id=451971","publisher":"City of Austin","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-04-10T00:00:00.000Z"}},{"summary":"Austin Fire describes full-purpose and limited-purpose City areas as in scope, fully ETJ parcels as out, and mixed jurisdictions as case-by-case.","sourceSections":["Current administrative scope"],"source":{"title":"Wildland-Urban Interface Code","url":"https://www.austintexas.gov/fire/wildland-urban-interface-code","publisher":"City of Austin","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z"}},{"summary":"Austin Fire assigns submissions from January 1, 2021 through July 9, 2025 to the amended 2015 IWUIC and submissions on or after July 10, 2025 to the amended 2024 IWUIC.","sourceSections":["Austin WUI Code History"],"source":{"title":"Wildland-Urban Interface Code","url":"https://www.austintexas.gov/fire/wildland-urban-interface-code","publisher":"City of Austin","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z"}}],"localAmendments":[{"kind":"transition","section":"Austin WUI Code History","summary":"Application submissions from January 1, 2021 through July 9, 2025 use the amended 2015 IWUIC; submissions on or after July 10, 2025 use the amended 2024 IWUIC.","source":{"title":"Wildland-Urban Interface Code","url":"https://www.austintexas.gov/fire/wildland-urban-interface-code","publisher":"City of Austin","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z"}},{"kind":"transition","section":"Changes to Approved Site Plans","summary":"Site plans approved under the 2015 IWUIC or earlier retain the older-code treatment for the vicinity plan, individual-structure access and water supply, access, defensible space, and ember ignition zone; a modification adding a structure or unit or increasing fire area must meet the updated rules for the revised portion, and permits submitted on or after July 10, 2025 use the 2024 IWUIC.","source":{"title":"Wildland-Urban Interface Code","url":"https://www.austintexas.gov/fire/wildland-urban-interface-code","publisher":"City of Austin","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z"}},{"kind":"transition","section":"WUI Vicinity Plans","summary":"A WUI Vicinity Plan approved under the 2015 IWUIC may be used for new phases in the same subdivision unless changes affect structure-to-wildland proximity; a PUD plan covering only part of the project does not cover other sections unless the approved PUD agreement does.","source":{"title":"Wildland-Urban Interface Code","url":"https://www.austintexas.gov/fire/wildland-urban-interface-code","publisher":"City of Austin","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z"}},{"kind":"transition","section":"Volume Builder Program Participants","summary":"Master Plans submitted before July 10, 2025 may continue with the 2021 Residential Code and 2015 IWUIC for that section or phase; new sections or phases needing a new Master Plan and Master Plans submitted on or after that date use the 2024 technical codes, and older prototypes require updating before reuse.","source":{"title":"Wildland-Urban Interface Code","url":"https://www.austintexas.gov/fire/wildland-urban-interface-code","publisher":"City of Austin","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z"}},{"kind":"deletion","section":"25-12-181(E)","summary":"Austin deletes the model Class 1, Class 2, and Class 3 ignition-resistant-construction definitions.","source":{"title":"Austin Ordinance 20250410-041","url":"https://services.austintexas.gov/edims/document.cfm?id=451971","publisher":"City of Austin","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-04-10T00:00:00.000Z"}},{"kind":"modification","section":"503.1 and 504–506","summary":"Austin substitutes Proximity Zones A, B, and C for the model construction classes and rewrites affected material scopes.","source":{"title":"Austin Ordinance 20250410-041","url":"https://services.austintexas.gov/edims/document.cfm?id=451971","publisher":"City of Austin","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-04-10T00:00:00.000Z"}},{"kind":"deletion","section":"505.9","summary":"Austin deletes the model Zone B exterior-door section, so the combined Class 1 and 2 door rows cannot remain joined.","source":{"title":"Austin Ordinance 20250410-041","url":"https://services.austintexas.gov/edims/document.cfm?id=451971","publisher":"City of Austin","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-04-10T00:00:00.000Z"}}],"supportingSources":[{"title":"Wildland-Urban Interface Code","url":"https://www.austintexas.gov/fire/wildland-urban-interface-code","publisher":"City of Austin","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z"}],"unresolvedPredicates":["official-boundary","official-hazard-map","project-type","effective-date","official-confirmation"],"source":{"title":"Austin Ordinance 20250410-041","url":"https://services.austintexas.gov/edims/document.cfm?id=451971","publisher":"City of Austin","sourceType":"official","accessedOn":"2026-08-26T00:00:00.000Z","documentDate":"2025-04-10T00:00:00.000Z"},"author":"grayson-graham","reviewStatus":"draft","lastVerified":"2026-08-26T00:00:00.000Z"}],"products":[{"id":"andersen-100-series-dual-pane-windows","name":"Andersen 100 Series windows with dual-pane glass","url":"/materials/andersen-100-series-dual-pane-windows/","categories":["windows"],"complianceStatus":"attribute-match","documentedAttributes":[{"attribute":"assemblyRole","value":"exterior-window","source":{"title":"100 Series center-of-glass performance for products with dual-pane 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