The Roofing Book

Permitting Authorities / South Middleton Township - Building Department

Do you need a permit to replace a roof in Township of South Middleton, PA?

Adopted code

South Middleton Township - Building Department

No, Township of South Middleton, PA does not require a permit for like-for-like roof replacement (South Middleton Township - Building Department). South Middleton Township's Permitting page lists "Re-shingling a roof" under "Permit Not Needed" and says "Certain circumstances apply." The Township's Permitting page (read October 7, 2026), under "Permit Not Needed," lists "Re-shingling a roof, replacing of doors, windows, and siding (with no structural changes), security alarms, temporary pods, repaving or paving driveways over stone. Certain circumstances apply." Under "Building Permit Needed" it lists "Alterations, repairs, additions, reconstructions, new constructions, demolitions," and it adds "When beginning a project, please call the Township office for specific directions on how to proceed." Section 2201(1.) of the Township's Zoning Ordinance says "No building in any District shall be erected, reconstructed, restored, or altered without a building permit duly issued upon application to the Township," and names no roof work. Ordinance No. 11 of 2004, the Township's Uniform Construction Code ordinance, names no roof work and makes no change to the code's permit provisions. The Township's Building & Codes fee schedule (consolidated fee schedule, Resolution No. 2025-22, adopted December 18, 2025) has no roofing line; it charges "Additions, alterations, renovations, repairs and all other uses" on existing houses at $200 for the first $1,000 of estimated cost and $20 per $1,000 after that, and the residential building permit application has no roofing box. The enacted text names no roof work either way; the no-permit line is the department's stated practice, and this record does not decide whether it is the department's reading of the Uniform Construction Code's exceptions or of Section 2201. 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"; 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"; 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 decide whether the municipality's requirement is one adopted under section 503 or kept in effect by section 303(b)(1). Read for this answer: Ordinance No. 11 of 2004, the Township's Uniform Construction Code ordinance, in full; Article 22 of the Township's Zoning Ordinance, which carries its building permit provisions; Section 2.02 of the Township's 2023 Floodplain Ordinance, whose permit clause sits in the floodplain rules; the Township's published ordinance list, which names no other building code ordinance (the Township publishes its ordinances as separate documents, not as a searchable code); the Permitting and Applications pages; the residential building application package; the How to Apply for Permits guide; and the Building & Codes pages of the consolidated fee schedule. Section 2201(1.)(e.) of the Zoning Ordinance says that where a required permit is not obtained before work starts, the fees "shall be doubled," and the fee schedule adds a fine for construction without a permit of $100 for a first offense, $250 for a second and $500 for a third. Building permit applications are on the Township's applications page or at the Township office; the office's telephone is 717-258-5324.

Roof code checklist: Township of South Middleton, PA

ItemAnswerCode citeSourceVerified
Permit to replace a roofNosmiddleton.com2026-10-07
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 codePublishedpacodeandbulletin.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
Township of South Middleton, Pennsylvania
Jurisdiction type
city
Address
520 Park Drive, Boiling Springs, PA 17007
Contact
  • url: https://www.smiddleton.com/2300/Permitting
  • phone: 717-258-5324
Roofing permit required
Not required
Contractor registration required
Required
Permit process note
South Middleton Township's Permitting page lists "Re-shingling a roof" under "Permit Not Needed" and says "Certain circumstances apply." The Township's Permitting page (read October 7, 2026), under "Permit Not Needed," lists "Re-shingling a roof, replacing of doors, windows, and siding (with no structural changes), security alarms, temporary pods, repaving or paving driveways over stone. Certain circumstances apply." Under "Building Permit Needed" it lists "Alterations, repairs, additions, reconstructions, new constructions, demolitions," and it adds "When beginning a project, please call the Township office for specific directions on how to proceed." Section 2201(1.) of the Township's Zoning Ordinance says "No building in any District shall be erected, reconstructed, restored, or altered without a building permit duly issued upon application to the Township," and names no roof work. Ordinance No. 11 of 2004, the Township's Uniform Construction Code ordinance, names no roof work and makes no change to the code's permit provisions. The Township's Building & Codes fee schedule (consolidated fee schedule, Resolution No. 2025-22, adopted December 18, 2025) has no roofing line; it charges "Additions, alterations, renovations, repairs and all other uses" on existing houses at $200 for the first $1,000 of estimated cost and $20 per $1,000 after that, and the residential building permit application has no roofing box. The enacted text names no roof work either way; the no-permit line is the department's stated practice, and this record does not decide whether it is the department's reading of the Uniform Construction Code's exceptions or of Section 2201. 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"; 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"; 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 decide whether the municipality's requirement is one adopted under section 503 or kept in effect by section 303(b)(1). Read for this answer: Ordinance No. 11 of 2004, the Township's Uniform Construction Code ordinance, in full; Article 22 of the Township's Zoning Ordinance, which carries its building permit provisions; Section 2.02 of the Township's 2023 Floodplain Ordinance, whose permit clause sits in the floodplain rules; the Township's published ordinance list, which names no other building code ordinance (the Township publishes its ordinances as separate documents, not as a searchable code); the Permitting and Applications pages; the residential building application package; the How to Apply for Permits guide; and the Building & Codes pages of the consolidated fee schedule. Section 2201(1.)(e.) of the Zoning Ordinance says that where a required permit is not obtained before work starts, the fees "shall be doubled," and the fee schedule adds a fine for construction without a permit of $100 for a first offense, $250 for a second and $500 for a third. Building permit applications are on the Township's applications page or at the Township office; the office's telephone is 717-258-5324.
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, South Middleton Township administers the code itself: its Ordinance No. 11 of 2004 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Permitting page says its staff is "currently certified in all local plan review and inspection disciplines, and a third party agency conducts reviews and inspections for the electrical code (NEC)." Applications go to the Township office at 520 Park Drive, Boiling Springs. Ordinance No. 11 of 2004 adopts the Uniform Construction Code, "as amended from time to time," as the municipal building code and changes nothing in the code's roofing provisions. It keeps in force parts of Ordinance 11 of 1996: "Ground snow loads shall be at a minimum of thirty (30) pounds per square foot" and a frost line of at least thirty-six inches. Ordinance No. 11 of 2004 adopts the Uniform Construction Code "as amended from time to time" without naming an edition; the Township's Permitting page says "South Middleton Township has adopted the 2021 International Code Council (ICC) Building Codes" and "ICC Codes Effective February 14, 2022," and its residential permit checklist asks for an application "in compliance with 2021 IRC Building Code," while its How to Apply for Permits guide (revised February 15, 2022) still lists the 2018 International Residential 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, South Middleton Township administers the code itself: its Ordinance No. 11 of 2004 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Permitting page says its staff is "currently certified in all local plan review and inspection disciplines, and a third party agency conducts reviews and inspections for the electrical code (NEC)." Applications go to the Township office at 520 Park Drive, Boiling Springs. Ordinance No. 11 of 2004, read in full, contains no UL 2218, Class 4 or hail-impact requirement, and the Township's Permitting page says it "has adopted the 2021 International Code Council (ICC) Building Codes."
Repair permit threshold
South Middleton Township's Permitting page lists re-shingling a roof among work for which a permit is not needed, with "Certain circumstances apply." The Township's Permitting page (read October 7, 2026), under "Permit Not Needed," lists "Re-shingling a roof, replacing of doors, windows, and siding (with no structural changes), security alarms, temporary pods, repaving or paving driveways over stone. Certain circumstances apply." Under "Building Permit Needed" it lists "Alterations, repairs, additions, reconstructions, new constructions, demolitions," and it adds "When beginning a project, please call the Township office for specific directions on how to proceed." Section 2201(1.) of the Township's Zoning Ordinance says "No building in any District shall be erected, reconstructed, restored, or altered without a building permit duly issued upon application to the Township," and names no roof work. Ordinance No. 11 of 2004, the Township's Uniform Construction Code ordinance, names no roof work and makes no change to the code's permit provisions. The Township's Building & Codes fee schedule (consolidated fee schedule, Resolution No. 2025-22, adopted December 18, 2025) has no roofing line; it charges "Additions, alterations, renovations, repairs and all other uses" on existing houses at $200 for the first $1,000 of estimated cost and $20 per $1,000 after that, and the residential building permit application has no roofing box. The enacted text names no roof work either way; the no-permit line is the department's stated practice, and this record does not decide whether it is the department's reading of the Uniform Construction Code's exceptions or of Section 2201. 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"; 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"; 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 decide whether the municipality's requirement is one adopted under section 503 or kept in effect by section 303(b)(1). 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, South Middleton Township administers the code itself: its Ordinance No. 11 of 2004 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Permitting page says its staff is "currently certified in all local plan review and inspection disciplines, and a third party agency conducts reviews and inspections for the electrical code (NEC)." Applications go to the Township office at 520 Park Drive, Boiling Springs. The department's line, quoted at the start, puts re-shingling a roof among work that needs no permit and alterations and repairs among work that needs one, and it does not say which circumstances change that; no Township text sets an area or cost threshold for roof work.
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, South Middleton Township administers the code itself: its Ordinance No. 11 of 2004 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Permitting page says its staff is "currently certified in all local plan review and inspection disciplines, and a third party agency conducts reviews and inspections for the electrical code (NEC)." Applications go to the Township office at 520 Park Drive, Boiling Springs. Ordinance No. 11 of 2004 changes nothing in the code's reroofing provisions, and the Township's permit pages say nothing on roof layers; the Permitting page lists re-shingling a roof among work for which a permit is not needed.
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, South Middleton Township administers the code itself: its Ordinance No. 11 of 2004 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Permitting page says its staff is "currently certified in all local plan review and inspection disciplines, and a third party agency conducts reviews and inspections for the electrical code (NEC)." Applications go to the Township office at 520 Park Drive, Boiling Springs. Ordinance No. 11 of 2004 changes nothing in the code's roof sheathing provisions, and the Township's permit pages draw no separate line for roof sheathing; the Permitting page's no-permit list is qualified "(with no structural changes)" for doors, windows and siding and says "Certain circumstances apply."
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. South Middleton Township is in Cumberland County. The Township's permit pages and fee schedule say nothing on sales tax.

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South Middleton Township, at 520 Park Drive, Boiling Springs, issues building permits through its own building code staff, and its Permitting page lists re-shingling a roof among work for which a permit is not needed. 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: Township of South Middleton, PA

Do you need a permit to replace a roof in Township of South Middleton, PA?

No, Township of South Middleton, PA does not require a permit to replace a roof. South Middleton Township's Permitting page lists re-shingling a roof among work for which a permit is not needed, with "Certain circumstances apply." The Township's Permitting page (read October 7, 2026), under "Permit Not Needed," lists "Re-shingling a roof, replacing of doors, windows, and siding (with no structural changes), security alarms, temporary pods, repaving or paving driveways over stone. Certain circumstances apply." Under "Building Permit Needed" it lists "Alterations, repairs, additions, reconstructions, new constructions, demolitions," and it adds "When beginning a project, please call the Township office for specific directions on how to proceed." Section 2201(1.) of the Township's Zoning Ordinance says "No building in any District shall be erected, reconstructed, restored, or altered without a building permit duly issued upon application to the Township," and names no roof work. Ordinance No. 11 of 2004, the Township's Uniform Construction Code ordinance, names no roof work and makes no change to the code's permit provisions. The Township's Building & Codes fee schedule (consolidated fee schedule, Resolution No. 2025-22, adopted December 18, 2025) has no roofing line; it charges "Additions, alterations, renovations, repairs and all other uses" on existing houses at $200 for the first $1,000 of estimated cost and $20 per $1,000 after that, and the residential building permit application has no roofing box. The enacted text names no roof work either way; the no-permit line is the department's stated practice, and this record does not decide whether it is the department's reading of the Uniform Construction Code's exceptions or of Section 2201. 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"; 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"; 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 decide whether the municipality's requirement is one adopted under section 503 or kept in effect by section 303(b)(1). 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, South Middleton Township administers the code itself: its Ordinance No. 11 of 2004 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Permitting page says its staff is "currently certified in all local plan review and inspection disciplines, and a third party agency conducts reviews and inspections for the electrical code (NEC)." Applications go to the Township office at 520 Park Drive, Boiling Springs. The department's line, quoted at the start, puts re-shingling a roof among work that needs no permit and alterations and repairs among work that needs one, and it does not say which circumstances change that; no Township text sets an area or cost threshold for roof work.

Can you roof over an existing roof in Township of South Middleton, 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, South Middleton Township administers the code itself: its Ordinance No. 11 of 2004 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Permitting page says its staff is "currently certified in all local plan review and inspection disciplines, and a third party agency conducts reviews and inspections for the electrical code (NEC)." Applications go to the Township office at 520 Park Drive, Boiling Springs. Ordinance No. 11 of 2004 changes nothing in the code's reroofing provisions, and the Township's permit pages say nothing on roof layers; the Permitting page lists re-shingling a roof among work for which a permit is not needed.

Do roofing contractors need a license or registration in Township of South Middleton, PA?

Yes.

What building code does Township of South Middleton, 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, South Middleton Township administers the code itself: its Ordinance No. 11 of 2004 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Permitting page says its staff is "currently certified in all local plan review and inspection disciplines, and a third party agency conducts reviews and inspections for the electrical code (NEC)." Applications go to the Township office at 520 Park Drive, Boiling Springs. Ordinance No. 11 of 2004 adopts the Uniform Construction Code, "as amended from time to time," as the municipal building code and changes nothing in the code's roofing provisions. It keeps in force parts of Ordinance 11 of 1996: "Ground snow loads shall be at a minimum of thirty (30) pounds per square foot" and a frost line of at least thirty-six inches. Ordinance No. 11 of 2004 adopts the Uniform Construction Code "as amended from time to time" without naming an edition; the Township's Permitting page says "South Middleton Township has adopted the 2021 International Code Council (ICC) Building Codes" and "ICC Codes Effective February 14, 2022," and its residential permit checklist asks for an application "in compliance with 2021 IRC Building Code," while its How to Apply for Permits guide (revised February 15, 2022) still lists the 2018 International Residential Code.