Adopted building code
The 2021 International Residential Code, as adopted by the State in the Pennsylvania Uniform Construction Code (UCC). 34 Pa. Code 403.21(a)(7) adopts "The 'International Residential Code of 2021,' except that:" followed by the State's list of exclusions and modifications, effective January 1, 2026 (55 Pa.B. 7701). None of the State's changes touches Chapter 9, Roof Assemblies, or Section R803, Roof Sheathing, so those apply as the International Code Council publishes them. Work on existing buildings is also pointed to the State's existing-building code: "The repair, alteration, change of occupancy, addition and relocation of existing buildings must comply with Chapter 34 of the 'International Building Code of 2021' or with the 'International Existing Building Code of 2021'" (34 Pa. Code 403.21(f)). The UCC is the minimum everywhere in the state: "no municipality may propose or enact any ordinance which is less than the minimum requirement of the Uniform Construction Code" (Pennsylvania Construction Code Act, Act 45 of 1999, section 503(b)). The Act also lists work it "shall not apply to", including "Alterations to residential buildings which do not make structural changes or changes to means of egress" or to "Repairs to residential buildings," in each case "except as might be required by ordinances" kept in force under section 303(b)(1) or adopted under section 503 (Act 45 section 104(b)(5) and (6); 34 Pa. Code 403.1(b)(8) and (9)). The Act defines a repair as "The reconstruction or renewal of any part of an existing building for the purpose of its maintenance." So whether the code's roofing rules reach a given house reroof depends on the municipality's own ordinances. Everything above is Pennsylvania state law, the same in every municipality. Locally, Southmont Borough elects to run the code itself: its Ordinance No. 526 (March 16, 2020, read October 12, 2026 from the scanned pages) says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act" and lists among the ways it may do so "By the retention of one or more construction code officials or third-party agencies to act on behalf of the Municipality." Its Ordinance No. 542 says "the Municipality has previously joined with the Cambria County Building Code Enforcement Agency for local enforcement of the Uniform Construction Code," and its 2024 fee resolution lists "UCC Building Permits/Fees" as "Set/Collected by PMCA/LMIA - varies with scope of project." The Borough's Code Enforcement & Building Permits page says "COMING SOON......" and gives the Borough office, 148 Wonder Street, Johnstown (814-255-3104). Ordinance No. 526 says "The Uniform Construction Code, contained in 34 Pa. Code, Chapters 401-405, as amended from time to time, is hereby adopted and incorporated herein by reference as the municipal building code of this Municipality" and "All relevant ordinances, regulations and policies of this Municipality not governed by the Code shall remain in full force and effect." It names no roof work and no code edition. The Borough's Zoning Ordinance No. 514, a scanned copy read by machine text recognition, was searched for roofing permit or exemption wording and none was found; its fee resolution lists a residential "Alterations/Additions" building code review fee and has no roofing line. Ordinance No. 478 adopts the property maintenance code as "International Property Maintenance Code (IPMC) 2009" and "renew as each new publication become available," and the Borough's pages name no residential code edition.
Permit process
Southmont Borough's pages do not say whether a house reroof needs a permit. The Borough's Forms & Permits page, read October 12, 2026, lists a pressure test application, sanitary sewer compliance application, tenant/landlord registration, solicitation application, shade tree work application, handicap parking, RV parking and trailer parking permit applications and no building or roofing form, and its Ordinances & Resolutions page lists no ordinance on roofing. The 2024 fee resolution (Resolution No. 2024-04, transcribed from the scanned pages) lists "Alterations/Additions/ Permanently Installed Swimming Pools-Requiring Building Code Review/ Inspections" and has no roofing line. Ordinance No. 526 says "The Uniform Construction Code, contained in 34 Pa. Code, Chapters 401-405, as amended from time to time, is hereby adopted and incorporated herein by reference as the municipal building code of this Municipality" and "All relevant ordinances, regulations and policies of this Municipality not governed by the Code shall remain in full force and effect." It names no roof work and no code edition. The Borough's Zoning Ordinance No. 514, a scanned copy read by machine text recognition, was searched for roofing permit or exemption wording and none was found; its fee resolution lists a residential "Alterations/Additions" building code review fee and has no roofing line. Under state law, Act 45 section 104(b)(5) and (6) list "Alterations to residential buildings which do not make structural changes or changes to means of egress" and "Repairs to residential buildings" among work the Act does not apply to, "except as might be required by ordinances in effect pursuant to section 303(b)(1) or adopted pursuant to section 503," and 34 Pa. Code 403.62(c) says "A permit is not required for the exceptions listed in § 403.1(b) (relating to scope) and the following, if the work does not violate a law or ordinance." This record does not state whether a house reroof needs a permit; ask the Borough office (814-255-3104) before starting. Read for this answer: the Borough's Code Enforcement & Building Permits, Forms & Permits and Ordinances & Resolutions pages, its Ordinances No. 526, 542, 478 and 514 and its 2024 fee resolution.