Roofing in Salt Lake City, Utah

Required

Required

Salt Lake City's own municipal code, Section 18.04.040, adopts "The International Residential Code, as promulgated by Title 15A of the Utah State Code" by a floating reference rather than a named edition, per the City Council's own administrative transmittal for its November 2025 ordinance. Utah Code 15A-2-103(1)(b) currently names that as the 2021 edition of the International Residential Code (the International Building Code, a separate subsection, is the 2024 edition; the two are not the same edition). Utah Code 15A-1-204(1)(a) makes this "the construction codes ... that the state and each political subdivision of the state shall follow," and 15A-1-204(1)(b) extends that to an owner "voluntarily engaged in ... the repair, renovation, remodeling, alteration ... of the building," reaching an ordinary reroof. Under 15A-1-204(8), Salt Lake City may not adopt or enforce a requirement "more restrictive than, the State Construction Code" on a subject the code addresses, except where Title 15A Chapter 4 expressly authorizes a named local amendment; that chapter's own registry of every codified local Utah IRC amendment is closed at two jurisdictions, Park City and Sandy City, and Salt Lake City is neither. Salt Lake City's own Building Services "Design Criteria" document (effective 7/1/2023) states it enforces the "2021 International Residential Code (including Appendices AE and AQ)" and separately lists the "2021 International Building Code," which is now an older edition than the state's current 2024 IBC; this record does not adjudicate that discrepancy, which affects only the commercial code, not the residential code roofing sits under. Separately from the residential code, on November 18, 2025 the City Council adopted the Utah Wildland-Urban Interface Code (the 2006 edition named at Utah Code 15A-2-103(2)) and a "Salt Lake City Wildland Urban Interface Map" into Title 18 (Section 18.44.010.B), per its own administrative transmittal and Council news page; the map is expressly not part of the zoning map because, in the City's own words, "the regulations are building code regulations, not zoning regulations." The Council's own page states that "the State Legislature passed a law requiring cities to adopt the same Wildland Urban Interface (WUI) code as the state before Jan. 1, 2026," citing House Bill 48; that duty is codified at Utah Code 65A-8-203(9)(a), which requires a municipality to "adopt and enforce" the code once the state has adopted a UWUIC edition, but the underlying adoption mechanism at 15A-2-103(2) remains a local ordinance rather than a code that applies of its own force. 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. The Wildland-Urban Interface code applies only "to over 1,900 acres in the city," on properties shown on the City's own map; a property not on the map is not subject to it. Where the Wildland-Urban Interface code does apply, its 2006 edition, Section 507, requires that a roof covering "replaced or [that has] 25 percent or more replaced in a 12-month period" be replaced with the covering required for new construction under Section 503.