Roofing in Layton, Utah

Required

THE 2021 INTERNATIONAL RESIDENTIAL CODE (WITH THE 2024 INTERNATIONAL BUILDING CODE), MANDATORY STATEWIDE UNDER UTAH LAW -- NOT A LOCAL LAYTON ADOPTION, AND CONFIRMED BY THE CITY'S OWN CURRENT STATEMENT. Utah Code 15A-2-103(1): "the following construction codes are incorporated by reference ... (a) the 2024 edition of the International Building Code ... (b) the 2021 edition of the International Residential Code." Utah Code 15A-1-204(1)(a): "The State Construction Code is the construction codes ... that the state and each political subdivision of the state shall follow." 15A-1-204(1)(b)(ii)(A) reaches an existing building whose owner is "voluntarily engaged in ... the repair, renovation, remodeling, alteration, enlargement, rehabilitation, conservation, or reconstruction of the building." Layton's own Building Division Design Criteria & Adopted Codes sheet (revised 7/1/26) independently lists, under the heading "Adopted Codes* (Effective 7/1/26)": "2024 International Building Code, (Including Appendices C and J)," "2021 International Residential Code (Including Appendices AQ and AE)," plus the 2024 Plumbing, Mechanical, Fuel Gas, Fire, Energy Conservation, Existing Building and Swimming Pool/Spa codes and the 2023 National Electrical Code -- and cites its own footnote to "*State Construction Code Title 15A-2-103." The City's own local Municipal Code layered on top of the state code was not independently reachable this session: its code hosts, hosting.civiclinq.com (a JavaScript application returning no server-rendered content) and layton.municipalcodeonline.com (an AngularJS single-page application returning HTTP 200 with no chapter text in its raw response), both returned no content. The only codified local IRC Chapter 9 amendments the Legislature has authorized anywhere in Utah (Title 15A, Chapter 4, Part 2) apply to Park City and Sandy City only, both wildfire wood-roof or ignition-resistant construction provisions, and neither names Layton. Separately, Utah Code 65A-8-203(9)(a) (enacted by HB 48, effective 2026-01-01) requires every municipality to "adopt and enforce" the 2006 Utah Wildland Urban Interface Code (adopted at 15A-2-103(2)) in any area it designates as wildland-urban interface; nothing self-executes and no statewide registry of adopting jurisdictions exists. Dated change, read 2026-09-23 in the enrolled bill and in the codified Title 15A Chapter 2: H.B. 41 (2026 General Session, Laws of Utah 2026 Chapter 386) will take effect on January 1, 2027 for Utah Code 15A-2-103, whose Subsection (2) then reads "the Legislature adopts the 2024 edition of the International Wildland-Urban Interface Code, issued by the International Code Council" in place of the 2006 Utah Wildland Urban Interface Code "that may be adopted by a local compliance agency by local ordinance or other similar action as a local amendment". The same act enacts Section 15A-3-1101, which amends that code's Section 302.1 and deletes its Section 602. Section 65A-8-203(9)(c), in its current codified text, provides that where "the state adopts a different wildland urban interface building standard", a county or municipality "has two years from the date the state adopts the different wildland urban interface building standard to adopt the appropriate wildland urban interface building standard." This record does not decide how Subsection (9)(a), which still speaks of an edition of the Utah Wildland Urban Interface Code, reads against the 2027 text, or what the 2024 code requires of a reroof. Layton's own GIS service publishes a "Wildland/Urban Interface" map layer, created June 10, 2025, whose City-authored metadata describes it as "Areas within Layton City at an increased fire risk due to environmental factors" -- first-party evidence a WUI zone has been declared and mapped in Layton, disclosed here without asserting which WUI code edition or ordinance governs inside it, a question this record leaves open.