The Roofing Book

Permitting Authorities / City of Hermitage - Building and Zoning Office

Do you need a permit to replace a roof in Hermitage, PA?

Adopted code

City of Hermitage - Building and Zoning Office

Yes, a permit is required to replace a roof in Hermitage, PA, issued by City of Hermitage - Building and Zoning Office. The City of Hermitage's residential permit packets list "roof shingle replacements" among residential permit applications. The City's Residential Additions and Single Family Dwelling construction permit packets (revised March 8, 2022, posted on the City's Permits & Applications page and read October 7, 2026) say "There is no plan review fee for all other residential permit applications including swimming pools, renovations, repairs, roof shingle replacements," so the City lists roof shingle replacements among residential permit applications. Chapter 5, Part 3 of the City Code, the City's Uniform Construction Code ordinance, names no roof work either way and has no permit clause of its own, and no other part of the City Code names a permit for roof work on a house. The City's Schedule of Fees carries a "Renovation or replacement of existing roofs" fee only in its Commercial Building Inspection Fee Schedule; its residential permit fees have no roofing line and charge "Miscellaneous building inspections" at $50. Under state law, Act 45 says the Act "shall not apply to" "Alterations to residential buildings which do not make structural changes or changes to means of egress, except as might be required by ordinances in effect pursuant to section 303(b)(1) or adopted pursuant to section 503" or to "Repairs to residential buildings, except as might be required by ordinances in effect pursuant to section 303(b)(1) or adopted pursuant to section 503" (section 104(b)(5) and (6)), and of a municipal ordinance that adds to the code, section 503(c) says "An ordinance under this subsection shall not be effective nor enforceable unless subsections (d), (e), (f), (g), (h) and (i) have been satisfied." This record does not decide whether the municipality's requirement is one adopted under section 503 or kept in effect by section 303(b)(1). In practice, the City's permit packets treat roof shingle replacements as residential permit applications, so expect the Building and Zoning Office to want a permit application for a reroof; the City's pages state no penalty for roof work done without one. The packets say applicants submit the Construction Permit application to the Building Department, which reviews it, and that the construction permit fee is calculated by the City. The City Building is at 800 North Hermitage Road; its telephone is 724-981-0800. Read for this answer: the whole City Code of Ordinances as the City publishes it (revised through December 18, 2025), including Chapter 5, Part 3, Uniform Construction Code (Sections 5-301 to 5-306), in full, Chapter 4, Buildings, Section 8-202 of the Floodplains chapter, whose permit clause reaches only floodplain areas, the zoning chapter's permit sections, and the Schedule of Fees, with every line of the Code that mentions a roof; the Building & Inspection and Permits & Applications pages; and the Residential Additions and Single Family Dwelling construction permit packets.

Roof code checklist: Hermitage, PA

ItemAnswerCode citeSourceVerified
Permit to replace a roofYeshermitage.net2026-10-07
Repair permit thresholdPublishedpacodeandbulletin.gov2026-10-07
Layer limit / roof-overPublishedR908.3.1.1pacodeandbulletin.gov2026-10-07
Deck & sheathingPublishedR905.2.1pacodeandbulletin.gov2026-10-07
Drip edgeNot published
Ice & water shieldNot published
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingNopacodeandbulletin.gov2026-10-07
Wind design criteriaNot published
Adopted codePublishedSec. 5-301pacodeandbulletin.gov2026-10-07
Contractor license / registrationYespalegis.us2026-10-07
Sales & use taxPublishedpa.gov2026-10-07

Each row comes from the sourced record on this page; full wording is in the table below. "Not published" means no official source for that item was found when the record was last verified.

Jurisdiction
City of Hermitage, Pennsylvania
Jurisdiction type
city
Address
800 North Hermitage Road, Hermitage, PA 16148
Contact
  • url: https://www.hermitage.net/186/Building-Inspection
  • phone: 724-981-0800
Roofing permit required
Required
Contractor registration required
Required
Permit process note
The City of Hermitage's residential permit packets list "roof shingle replacements" among residential permit applications. The City's Residential Additions and Single Family Dwelling construction permit packets (revised March 8, 2022, posted on the City's Permits & Applications page and read October 7, 2026) say "There is no plan review fee for all other residential permit applications including swimming pools, renovations, repairs, roof shingle replacements," so the City lists roof shingle replacements among residential permit applications. Chapter 5, Part 3 of the City Code, the City's Uniform Construction Code ordinance, names no roof work either way and has no permit clause of its own, and no other part of the City Code names a permit for roof work on a house. The City's Schedule of Fees carries a "Renovation or replacement of existing roofs" fee only in its Commercial Building Inspection Fee Schedule; its residential permit fees have no roofing line and charge "Miscellaneous building inspections" at $50. Under state law, Act 45 says the Act "shall not apply to" "Alterations to residential buildings which do not make structural changes or changes to means of egress, except as might be required by ordinances in effect pursuant to section 303(b)(1) or adopted pursuant to section 503" or to "Repairs to residential buildings, except as might be required by ordinances in effect pursuant to section 303(b)(1) or adopted pursuant to section 503" (section 104(b)(5) and (6)), and of a municipal ordinance that adds to the code, section 503(c) says "An ordinance under this subsection shall not be effective nor enforceable unless subsections (d), (e), (f), (g), (h) and (i) have been satisfied." This record does not decide whether the municipality's requirement is one adopted under section 503 or kept in effect by section 303(b)(1). In practice, the City's permit packets treat roof shingle replacements as residential permit applications, so expect the Building and Zoning Office to want a permit application for a reroof; the City's pages state no penalty for roof work done without one. The packets say applicants submit the Construction Permit application to the Building Department, which reviews it, and that the construction permit fee is calculated by the City. The City Building is at 800 North Hermitage Road; its telephone is 724-981-0800. Read for this answer: the whole City Code of Ordinances as the City publishes it (revised through December 18, 2025), including Chapter 5, Part 3, Uniform Construction Code (Sections 5-301 to 5-306), in full, Chapter 4, Buildings, Section 8-202 of the Floodplains chapter, whose permit clause reaches only floodplain areas, the zoning chapter's permit sections, and the Schedule of Fees, with every line of the Code that mentions a roof; the Building & Inspection and Permits & Applications pages; and the Residential Additions and Single Family Dwelling construction permit packets.
Adopted 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, The City of Hermitage administers the code itself: Section 5-301 of the City Code says "The city of Hermitage hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code," and the City's Building & Inspection page says its Building and Zoning Office, in the Planning and Development Department at 800 North Hermitage Road, "reviews all requests for building permits, issues permits," with inspections by the Inspection Division's two City inspectors "certified by the Commonwealth of Pennsylvania under the State Uniform Construction Code"; the City contracts with a third-party inspection firm only for non-residential (commercial) permit applications. Section 5-302 adopts the Uniform Construction Code, "as amended from time to time," as the municipal building code of the City, and the City Code changes nothing in the code's roofing provisions. Section 5-302 adopts the Uniform Construction Code "as amended from time to time" without naming an edition, and the City's Building & Inspection page names none, saying visitors "should consult the PA Department of Labor and Industry website for the current code series." Section 5-305 keeps in force building code ordinances adopted on or before July 1, 1999 that equal or exceed the code; none is published in the City Code.
Impact-resistant roofing
Not required — No impact-resistance requirement under state law. The State's adoption of the 2021 International Residential Code (34 Pa. Code 403.21) contains no hail or impact rule, and it makes no change to the code's roof assemblies chapter, which itself has no UL 2218, Class 4 or hail-impact requirement for roof coverings. A municipality could add one only by an ordinance that equals or exceeds the Uniform Construction Code under Act 45 section 503, filed with the Department of Labor and Industry; none of the filings on the Department's register of municipal code change ordinances mentions hail or impact resistance. An owner may still choose an impact-rated roof covering. Everything above is Pennsylvania state law, the same in every municipality. Locally, The City of Hermitage administers the code itself: Section 5-301 of the City Code says "The city of Hermitage hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code," and the City's Building & Inspection page says its Building and Zoning Office, in the Planning and Development Department at 800 North Hermitage Road, "reviews all requests for building permits, issues permits," with inspections by the Inspection Division's two City inspectors "certified by the Commonwealth of Pennsylvania under the State Uniform Construction Code"; the City contracts with a third-party inspection firm only for non-residential (commercial) permit applications. Chapter 5, Part 3 of the City Code, read in full, contains no UL 2218, Class 4 or hail-impact requirement. Section 5-302 adopts the Uniform Construction Code "as amended from time to time" without naming an edition, and the City's Building & Inspection page names none, saying visitors "should consult the PA Department of Labor and Industry website for the current code series."
Repair permit threshold
The City of Hermitage lists roof shingle replacements among residential permit applications. The City's Residential Additions and Single Family Dwelling construction permit packets (revised March 8, 2022, posted on the City's Permits & Applications page and read October 7, 2026) say "There is no plan review fee for all other residential permit applications including swimming pools, renovations, repairs, roof shingle replacements," so the City lists roof shingle replacements among residential permit applications. Chapter 5, Part 3 of the City Code, the City's Uniform Construction Code ordinance, names no roof work either way and has no permit clause of its own, and no other part of the City Code names a permit for roof work on a house. The City's Schedule of Fees carries a "Renovation or replacement of existing roofs" fee only in its Commercial Building Inspection Fee Schedule; its residential permit fees have no roofing line and charge "Miscellaneous building inspections" at $50. Under state law, Act 45 says the Act "shall not apply to" "Alterations to residential buildings which do not make structural changes or changes to means of egress, except as might be required by ordinances in effect pursuant to section 303(b)(1) or adopted pursuant to section 503" or to "Repairs to residential buildings, except as might be required by ordinances in effect pursuant to section 303(b)(1) or adopted pursuant to section 503" (section 104(b)(5) and (6)), and of a municipal ordinance that adds to the code, section 503(c) says "An ordinance under this subsection shall not be effective nor enforceable unless subsections (d), (e), (f), (g), (h) and (i) have been satisfied." This record does not decide whether the municipality's requirement is one adopted under section 503 or kept in effect by section 303(b)(1). In practice, the City's permit packets treat roof shingle replacements as residential permit applications, so expect the Building and Zoning Office to want a permit application for a reroof; the City's pages state no penalty for roof work done without one. State law sets no square-footage or percentage threshold for roof work; any threshold is set locally. The Uniform Construction Code "does not apply to" "Alterations to residential buildings which do not make structural changes or changes to means of egress, except as required by ordinances in effect under sections 303(b)(1) or 503 of the act" or to "Repairs to residential buildings, except as required by ordinances in effect under sections 303(b)(1) and 503 of the act" (34 Pa. Code 403.1(b)(8) and (9)), and "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" (34 Pa. Code 403.62(c)). For houses the regulation adds: "An ordinary repair does not require a permit." Its list of work that is not an ordinary repair names cutting away a load-bearing wall, "The removal or cutting of any structural beam or load-bearing support," changes to a required means of egress, and new or relocated piping, wiring or mechanical work (34 Pa. Code 403.62(d)); roofing is not named. A municipality may require more: under Act 45 section 503(c) it "may enact ordinances pursuant to this section which adopt additional code requirements for alterations or repairs to residential buildings," after a public hearing and after filing the proposed ordinance with the Department of Labor and Industry. These rules concern a "Residential building," which the regulation defines as "Detached one-family and two-family dwellings and townhouses which are not more than three stories above grade plane in height with a separate means of egress and their accessory structures" (34 Pa. Code 401.1). Everything above is Pennsylvania state law, the same in every municipality. Locally, The City of Hermitage administers the code itself: Section 5-301 of the City Code says "The city of Hermitage hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code," and the City's Building & Inspection page says its Building and Zoning Office, in the Planning and Development Department at 800 North Hermitage Road, "reviews all requests for building permits, issues permits," with inspections by the Inspection Division's two City inspectors "certified by the Commonwealth of Pennsylvania under the State Uniform Construction Code"; the City contracts with a third-party inspection firm only for non-residential (commercial) permit applications. No City text sets an area or cost threshold for roof work on a house.
Roof layer limit / recover
Two layers at most where the state code reaches the job. Pennsylvania adopts the 2021 International Residential Code without changing its reroofing section, R908 (34 Pa. Code 403.21(a)(7); the State's list of changes names no Chapter 9 section). Section R908.3.1.1 says "A roof recover shall not be permitted where any of the following conditions occur," and the third condition is "Where the existing roof has two or more applications of any type of roof covering." So one existing layer may be covered once, and a roof that already has two layers is torn off to the deck. The same section also bars a recover "Where the existing roof or roof covering is water soaked or has deteriorated to the point that the existing roof or roof covering is not adequate as a base for additional roofing" and "Where the existing roof covering is slate, clay, cement or asbestos-cement tile." The existing-building code the State also adopts, the 2021 International Existing Building Code (34 Pa. Code 403.21(f)), carries the same three conditions in Section 705.2.1.1. These rules bind work the Uniform Construction Code reaches. The Act does not apply to "Repairs to residential buildings" or to alterations that make no structural change, "except as might be required by ordinances" (Act 45 section 104(b)(5) and (6)), so whether R908 binds a particular house reroof turns on that exclusion and on the municipality's own ordinances. Everything above is Pennsylvania state law, the same in every municipality. Locally, The City of Hermitage administers the code itself: Section 5-301 of the City Code says "The city of Hermitage hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code," and the City's Building & Inspection page says its Building and Zoning Office, in the Planning and Development Department at 800 North Hermitage Road, "reviews all requests for building permits, issues permits," with inspections by the Inspection Division's two City inspectors "certified by the Commonwealth of Pennsylvania under the State Uniform Construction Code"; the City contracts with a third-party inspection firm only for non-residential (commercial) permit applications. The City Code changes nothing in the code's reroofing provisions, and the City's permit pages and packets say nothing on roof layers.
Deck & sheathing requirements
State rules from the base code, where the state code reaches the job. Pennsylvania adopts the 2021 International Residential Code without changing Section R803, Roof Sheathing (34 Pa. Code 403.21(a)(7); the State's changes to Chapter 8 are to ridge framing and attic ventilation). Lumber roof sheathing follows Table R803.1: over rafters or beams 24 inches apart it must be at least 5/8 inch net thick. Wood structural panels "shall be identified for grade, bond classification and performance category by a grade mark or certificate of inspection issued by an approved agency," and their spans "shall not exceed the values set forth in Table R503.2.1.1(1) or APA E30." For shingles, "Asphalt shingles shall be fastened to solidly sheathed decks" (R905.2.1), and on any reroof "The structural roof components shall be capable of supporting the roof covering system and the material and equipment loads that will be encountered during installation of the roof covering system" (R908.2). These rules bind work the Uniform Construction Code reaches; the Act does not apply to "Repairs to residential buildings" or to alterations that make no structural change, "except as might be required by ordinances" (Act 45 section 104(b)(5) and (6)). Act 45 section 104(b)(5) excludes alterations "which do not make structural changes or changes to means of egress" and says only that "a structural change does not include a minor framing change needed to replace existing windows or doors"; 34 Pa. Code 403.62(d)(2) lists "The removal or cutting of any structural beam or load-bearing support" as not an ordinary repair. Neither names roof sheathing; this record does not decide whether replacing it is either. Everything above is Pennsylvania state law, the same in every municipality. Locally, The City of Hermitage administers the code itself: Section 5-301 of the City Code says "The city of Hermitage hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code," and the City's Building & Inspection page says its Building and Zoning Office, in the Planning and Development Department at 800 North Hermitage Road, "reviews all requests for building permits, issues permits," with inspections by the Inspection Division's two City inspectors "certified by the Commonwealth of Pennsylvania under the State Uniform Construction Code"; the City contracts with a third-party inspection firm only for non-residential (commercial) permit applications. The City Code changes nothing in the code's roof sheathing provisions; the City's residential additions packet asks for the "Thickness and type of roof sheathing" on plans for an addition and draws no separate line for re-sheathing an existing roof.
Sales & use tax
6% Pennsylvania sales and use tax, with a local tax added on purchases made in Allegheny County (1%) and Philadelphia (2%). On a reroof the roofer pays the tax on the materials and does not add it to the homeowner's bill. The Department of Revenue says: "The Pennsylvania sales tax rate is 6 percent. By law, a 1 percent local tax is added to purchases made in Allegheny County, and 2 percent local tax is added to purchases made in Philadelphia." Roof work is a construction activity: the rule's list of items "presumed to become a permanent part of real estate" includes "Roofing (repairs)" (61 Pa. Code 31.11). For construction activities, "A contractor shall pay tax upon the purchase price ... of all property, including materials, equipment, components and supplies, which he furnishes and installs" (61 Pa. Code 31.12(a)(1)), and the rule's example says the contractor "does not charge sales tax on this transaction to his customer. The contractor may include the tax he must pay in his bid proposal but not as a separately stated item." Apart from limited exceptions set out in the rule, the same holds on jobs for tax-exempt owners: "a contractor erecting a building, repairing a roof, replacing a door for a governmental agency, ... school district, charitable or religious organization, and the like, shall pay tax upon the property which he consumes" (61 Pa. Code 31.13(a)). Everything above is Pennsylvania state law, the same in every municipality. The City of Hermitage is in Mercer County. The City's permit pages and fee schedule say nothing on sales tax.

More roof permit pages in Pennsylvania

Hopewell Township (Beaver County) - Planning and ZoningRoof permit Johnstown, PARoof permit Lancaster Township - Planning & Zoning DepartmentRoof permit Lancaster, PARoof permit Lebanon, PARoof permit

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The City of Hermitage's Building and Zoning Office, in the Planning and Development Department at 800 North Hermitage Road, issues building permits, and the City's residential permit packets list roof shingle replacements among residential permit applications. The Pennsylvania Uniform Construction Code applies statewide, but Act 45 section 104(b) lists "Repairs to residential buildings" and alterations that make no structural or egress change among work it 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."

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Roofing questions: Hermitage, PA

Do you need a permit to replace a roof in Hermitage, PA?

Yes, a permit is required to replace a roof in Hermitage, PA. The City of Hermitage lists roof shingle replacements among residential permit applications. The City's Residential Additions and Single Family Dwelling construction permit packets (revised March 8, 2022, posted on the City's Permits & Applications page and read October 7, 2026) say "There is no plan review fee for all other residential permit applications including swimming pools, renovations, repairs, roof shingle replacements," so the City lists roof shingle replacements among residential permit applications. Chapter 5, Part 3 of the City Code, the City's Uniform Construction Code ordinance, names no roof work either way and has no permit clause of its own, and no other part of the City Code names a permit for roof work on a house. The City's Schedule of Fees carries a "Renovation or replacement of existing roofs" fee only in its Commercial Building Inspection Fee Schedule; its residential permit fees have no roofing line and charge "Miscellaneous building inspections" at $50. Under state law, Act 45 says the Act "shall not apply to" "Alterations to residential buildings which do not make structural changes or changes to means of egress, except as might be required by ordinances in effect pursuant to section 303(b)(1) or adopted pursuant to section 503" or to "Repairs to residential buildings, except as might be required by ordinances in effect pursuant to section 303(b)(1) or adopted pursuant to section 503" (section 104(b)(5) and (6)), and of a municipal ordinance that adds to the code, section 503(c) says "An ordinance under this subsection shall not be effective nor enforceable unless subsections (d), (e), (f), (g), (h) and (i) have been satisfied." This record does not decide whether the municipality's requirement is one adopted under section 503 or kept in effect by section 303(b)(1). In practice, the City's permit packets treat roof shingle replacements as residential permit applications, so expect the Building and Zoning Office to want a permit application for a reroof; the City's pages state no penalty for roof work done without one. State law sets no square-footage or percentage threshold for roof work; any threshold is set locally. The Uniform Construction Code "does not apply to" "Alterations to residential buildings which do not make structural changes or changes to means of egress, except as required by ordinances in effect under sections 303(b)(1) or 503 of the act" or to "Repairs to residential buildings, except as required by ordinances in effect under sections 303(b)(1) and 503 of the act" (34 Pa. Code 403.1(b)(8) and (9)), and "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" (34 Pa. Code 403.62(c)). For houses the regulation adds: "An ordinary repair does not require a permit." Its list of work that is not an ordinary repair names cutting away a load-bearing wall, "The removal or cutting of any structural beam or load-bearing support," changes to a required means of egress, and new or relocated piping, wiring or mechanical work (34 Pa. Code 403.62(d)); roofing is not named. A municipality may require more: under Act 45 section 503(c) it "may enact ordinances pursuant to this section which adopt additional code requirements for alterations or repairs to residential buildings," after a public hearing and after filing the proposed ordinance with the Department of Labor and Industry. These rules concern a "Residential building," which the regulation defines as "Detached one-family and two-family dwellings and townhouses which are not more than three stories above grade plane in height with a separate means of egress and their accessory structures" (34 Pa. Code 401.1). Everything above is Pennsylvania state law, the same in every municipality. Locally, The City of Hermitage administers the code itself: Section 5-301 of the City Code says "The city of Hermitage hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code," and the City's Building & Inspection page says its Building and Zoning Office, in the Planning and Development Department at 800 North Hermitage Road, "reviews all requests for building permits, issues permits," with inspections by the Inspection Division's two City inspectors "certified by the Commonwealth of Pennsylvania under the State Uniform Construction Code"; the City contracts with a third-party inspection firm only for non-residential (commercial) permit applications. No City text sets an area or cost threshold for roof work on a house.

Can you roof over an existing roof in Hermitage, PA?

Two layers at most where the state code reaches the job. Pennsylvania adopts the 2021 International Residential Code without changing its reroofing section, R908 (34 Pa. Code 403.21(a)(7); the State's list of changes names no Chapter 9 section). Section R908.3.1.1 says "A roof recover shall not be permitted where any of the following conditions occur," and the third condition is "Where the existing roof has two or more applications of any type of roof covering." So one existing layer may be covered once, and a roof that already has two layers is torn off to the deck. The same section also bars a recover "Where the existing roof or roof covering is water soaked or has deteriorated to the point that the existing roof or roof covering is not adequate as a base for additional roofing" and "Where the existing roof covering is slate, clay, cement or asbestos-cement tile." The existing-building code the State also adopts, the 2021 International Existing Building Code (34 Pa. Code 403.21(f)), carries the same three conditions in Section 705.2.1.1. These rules bind work the Uniform Construction Code reaches. The Act does not apply to "Repairs to residential buildings" or to alterations that make no structural change, "except as might be required by ordinances" (Act 45 section 104(b)(5) and (6)), so whether R908 binds a particular house reroof turns on that exclusion and on the municipality's own ordinances. Everything above is Pennsylvania state law, the same in every municipality. Locally, The City of Hermitage administers the code itself: Section 5-301 of the City Code says "The city of Hermitage hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code," and the City's Building & Inspection page says its Building and Zoning Office, in the Planning and Development Department at 800 North Hermitage Road, "reviews all requests for building permits, issues permits," with inspections by the Inspection Division's two City inspectors "certified by the Commonwealth of Pennsylvania under the State Uniform Construction Code"; the City contracts with a third-party inspection firm only for non-residential (commercial) permit applications. The City Code changes nothing in the code's reroofing provisions, and the City's permit pages and packets say nothing on roof layers.

Do roofing contractors need a license or registration in Hermitage, PA?

Yes.

What building code does Hermitage, PA use?

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, The City of Hermitage administers the code itself: Section 5-301 of the City Code says "The city of Hermitage hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code," and the City's Building & Inspection page says its Building and Zoning Office, in the Planning and Development Department at 800 North Hermitage Road, "reviews all requests for building permits, issues permits," with inspections by the Inspection Division's two City inspectors "certified by the Commonwealth of Pennsylvania under the State Uniform Construction Code"; the City contracts with a third-party inspection firm only for non-residential (commercial) permit applications. Section 5-302 adopts the Uniform Construction Code, "as amended from time to time," as the municipal building code of the City, and the City Code changes nothing in the code's roofing provisions. Section 5-302 adopts the Uniform Construction Code "as amended from time to time" without naming an edition, and the City's Building & Inspection page names none, saying visitors "should consult the PA Department of Labor and Industry website for the current code series." Section 5-305 keeps in force building code ordinances adopted on or before July 1, 1999 that equal or exceed the code; none is published in the City Code.