Permitting Authorities / Westfall Township - Township Office (Building Permits)

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

Adopted code

Westfall Township - Township Office (Building Permits)

Yes, a permit is required to replace a roof in Township of Westfall, PA, issued by Westfall Township - Township Office (Building Permits). Westfall Township says roofing permits are required for repairs and replacements. The Township's Forms & Fees page (read October 12, 2026), under its "Building permit application 2025" link, says "Roofing Permits are required for repairs and replacements. Please contact the Township Office with any questions 1-570-491-4065." The Township's 2025 Application for Building Permit lists "Repair/Replacement" among its types of improvement and, under REQUIRED DOCUMENTS, "Roof repair/replacement - full narrative of work or copy of contract. Any structural repair must submit plan," and carries a "UCC Fee" line in its fee calculations. 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, expect the Township to require a permit for a reroof: its page says roofing permits are required for replacements, and no Township text read exempts a reroof. The Township's pages state no penalty for roofing work specifically; Ordinance No. 82, whose continued effect this record does not decide, sets for violations of that code "a fine of not more than $1,000.00, or by imprisonment not exceeding thirty (30) days." Ordinance No. 120 also says "All building code ordinances or portions of ordinances which were adopted by this Municipality on or before July 1, 1999, and which equal or exceed the requirements of the Code shall continue in full force and effect," and the Township posts Ordinance No. 82, which adopts "The BOCA National Building Code, Twelfth Edition, 1993" as the Township's building code and sets permit fees by resolution; this record read Ordinance 120 and the first three pages of Ordinance 82 from the rendered page images, does not decide whether Ordinance 82 remains in effect, and did not read the 1993 BOCA text. The application asks for the contractor's Pennsylvania Home Improvement Contractor number and expiration date and says a "Certificate of Insurance naming the municipality as certificate holder must be provided annually or upon request." Call the Township Office at 570-491-4065 with questions. Read for this answer: the Township's Forms & Fees, Contacts, Officials, Zoning Applications & Ordinances and Commercial Building Permit Process pages, the 2025 Application for Building Permit, Ordinance No. 120 and the first three pages of Ordinance No. 82. The Township keeps no online code book; its ordinance list on the Forms & Fees page names Ordinance No. 120 (Uniform Construction Code) and Ordinance No. 82 (Building Codes) as its building ordinances.

Roof code checklist: Township of Westfall, PA

ItemAnswerCode citeSourceVerified
Permit to replace a roofYeswestfalltownship.org2026-10-12
Repair permit thresholdPublishedpacodeandbulletin.gov2026-10-12
Layer limit / roof-overPublishedR908.3.1.1pacodeandbulletin.gov2026-10-12
Deck & sheathingPublishedR905.2.1pacodeandbulletin.gov2026-10-12
Drip edgeNot published
Ice & water shieldNot published
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingNot published
Wind design criteriaNot published
Adopted codePublishedpacodeandbulletin.gov2026-10-12
Contractor license / registrationYespalegis.us2026-10-12
Sales & use taxPublishedpa.gov2026-10-12

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 Westfall, Pennsylvania
Jurisdiction type
city
Address
102 LaBarr Lane, Matamoras, PA 18336
Contact
  • url: https://westfalltownship.org/contacts/
  • phone: 570-491-4065
Roofing permit required
Required
Contractor registration required
Required
Permit process note
Westfall Township says roofing permits are required for repairs and replacements. The Township's Forms & Fees page (read October 12, 2026), under its "Building permit application 2025" link, says "Roofing Permits are required for repairs and replacements. Please contact the Township Office with any questions 1-570-491-4065." The Township's 2025 Application for Building Permit lists "Repair/Replacement" among its types of improvement and, under REQUIRED DOCUMENTS, "Roof repair/replacement - full narrative of work or copy of contract. Any structural repair must submit plan," and carries a "UCC Fee" line in its fee calculations. 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, expect the Township to require a permit for a reroof: its page says roofing permits are required for replacements, and no Township text read exempts a reroof. The Township's pages state no penalty for roofing work specifically; Ordinance No. 82, whose continued effect this record does not decide, sets for violations of that code "a fine of not more than $1,000.00, or by imprisonment not exceeding thirty (30) days." Ordinance No. 120 also says "All building code ordinances or portions of ordinances which were adopted by this Municipality on or before July 1, 1999, and which equal or exceed the requirements of the Code shall continue in full force and effect," and the Township posts Ordinance No. 82, which adopts "The BOCA National Building Code, Twelfth Edition, 1993" as the Township's building code and sets permit fees by resolution; this record read Ordinance 120 and the first three pages of Ordinance 82 from the rendered page images, does not decide whether Ordinance 82 remains in effect, and did not read the 1993 BOCA text. The application asks for the contractor's Pennsylvania Home Improvement Contractor number and expiration date and says a "Certificate of Insurance naming the municipality as certificate holder must be provided annually or upon request." Call the Township Office at 570-491-4065 with questions. Read for this answer: the Township's Forms & Fees, Contacts, Officials, Zoning Applications & Ordinances and Commercial Building Permit Process pages, the 2025 Application for Building Permit, Ordinance No. 120 and the first three pages of Ordinance No. 82. The Township keeps no online code book; its ordinance list on the Forms & Fees page names Ordinance No. 120 (Uniform Construction Code) and Ordinance No. 82 (Building Codes) as its building ordinances.
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, Westfall Township issues building permits from its Township office at 102 LaBarr Lane, Matamoras. Its Contacts page (read October 12, 2026) lists a "Building Inspector/Code Enforcement Officer" supplied by a consulting firm, with set weekly hours, and Ordinance No. 120 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act" and that the Uniform Construction Code "is hereby adopted and incorporated herein by reference as the municipal building code of this Municipality" (transcribed from the rendered page image, since the posted PDF has no text layer). Ordinance No. 120 also says "All building code ordinances or portions of ordinances which were adopted by this Municipality on or before July 1, 1999, and which equal or exceed the requirements of the Code shall continue in full force and effect," and the Township posts Ordinance No. 82, which adopts "The BOCA National Building Code, Twelfth Edition, 1993" as the Township's building code and sets permit fees by resolution; this record read Ordinance 120 and the first three pages of Ordinance 82 from the rendered page images, does not decide whether Ordinance 82 remains in effect, and did not read the 1993 BOCA text. The Township's pages name no edition of the Uniform Construction Code.
Repair permit threshold
Westfall Township says roofing permits are required for repairs and replacements. The Township's Forms & Fees page (read October 12, 2026), under its "Building permit application 2025" link, says "Roofing Permits are required for repairs and replacements. Please contact the Township Office with any questions 1-570-491-4065." The Township's 2025 Application for Building Permit lists "Repair/Replacement" among its types of improvement and, under REQUIRED DOCUMENTS, "Roof repair/replacement - full narrative of work or copy of contract. Any structural repair must submit plan," and carries a "UCC Fee" line in its fee calculations. 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, expect the Township to require a permit for a reroof: its page says roofing permits are required for replacements, and no Township text read exempts a reroof. The Township's pages state no penalty for roofing work specifically; Ordinance No. 82, whose continued effect this record does not decide, sets for violations of that code "a fine of not more than $1,000.00, or by imprisonment not exceeding thirty (30) days." 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, Westfall Township issues building permits from its Township office at 102 LaBarr Lane, Matamoras. Its Contacts page (read October 12, 2026) lists a "Building Inspector/Code Enforcement Officer" supplied by a consulting firm, with set weekly hours, and Ordinance No. 120 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act" and that the Uniform Construction Code "is hereby adopted and incorporated herein by reference as the municipal building code of this Municipality" (transcribed from the rendered page image, since the posted PDF has no text layer). Its statement is the one quoted at the start: roofing permits are required for repairs and replacements, with no area or percentage threshold.
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, Westfall Township issues building permits from its Township office at 102 LaBarr Lane, Matamoras. Its Contacts page (read October 12, 2026) lists a "Building Inspector/Code Enforcement Officer" supplied by a consulting firm, with set weekly hours, and Ordinance No. 120 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act" and that the Uniform Construction Code "is hereby adopted and incorporated herein by reference as the municipal building code of this Municipality" (transcribed from the rendered page image, since the posted PDF has no text layer). The Township's pages say nothing on roof layers. Ordinance No. 82 adopts the 1993 BOCA National Building Code; the text above is the 2021 edition's, the 1993 text was not read for this record, and this record does not decide which code the Township applies to a reroof.
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, Westfall Township issues building permits from its Township office at 102 LaBarr Lane, Matamoras. Its Contacts page (read October 12, 2026) lists a "Building Inspector/Code Enforcement Officer" supplied by a consulting firm, with set weekly hours, and Ordinance No. 120 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act" and that the Uniform Construction Code "is hereby adopted and incorporated herein by reference as the municipal building code of this Municipality" (transcribed from the rendered page image, since the posted PDF has no text layer). The Township's application says "Any structural repair must submit plan" for roof repair or replacement and draws no separate line for roof sheathing. Ordinance No. 82 adopts the 1993 BOCA National Building Code; the text above is the 2021 edition's, the 1993 text was not read for this record, and this record does not decide which code the Township applies.
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. Westfall Township is in Pike County. The Township's permit pages and application say nothing on sales tax.

Westfall Township issues building permits from its Township office at 102 LaBarr Lane, Matamoras, and its Forms & Fees page says "Roofing Permits are required for repairs and replacements." 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 Westfall, PA

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

Yes, a permit is required to replace a roof in Township of Westfall, PA. Westfall Township says roofing permits are required for repairs and replacements. The Township's Forms & Fees page (read October 12, 2026), under its "Building permit application 2025" link, says "Roofing Permits are required for repairs and replacements. Please contact the Township Office with any questions 1-570-491-4065." The Township's 2025 Application for Building Permit lists "Repair/Replacement" among its types of improvement and, under REQUIRED DOCUMENTS, "Roof repair/replacement - full narrative of work or copy of contract. Any structural repair must submit plan," and carries a "UCC Fee" line in its fee calculations. 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, expect the Township to require a permit for a reroof: its page says roofing permits are required for replacements, and no Township text read exempts a reroof. The Township's pages state no penalty for roofing work specifically; Ordinance No. 82, whose continued effect this record does not decide, sets for violations of that code "a fine of not more than $1,000.00, or by imprisonment not exceeding thirty (30) days." 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, Westfall Township issues building permits from its Township office at 102 LaBarr Lane, Matamoras. Its Contacts page (read October 12, 2026) lists a "Building Inspector/Code Enforcement Officer" supplied by a consulting firm, with set weekly hours, and Ordinance No. 120 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act" and that the Uniform Construction Code "is hereby adopted and incorporated herein by reference as the municipal building code of this Municipality" (transcribed from the rendered page image, since the posted PDF has no text layer). Its statement is the one quoted at the start: roofing permits are required for repairs and replacements, with no area or percentage threshold.

Can you roof over an existing roof in Township of Westfall, 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, Westfall Township issues building permits from its Township office at 102 LaBarr Lane, Matamoras. Its Contacts page (read October 12, 2026) lists a "Building Inspector/Code Enforcement Officer" supplied by a consulting firm, with set weekly hours, and Ordinance No. 120 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act" and that the Uniform Construction Code "is hereby adopted and incorporated herein by reference as the municipal building code of this Municipality" (transcribed from the rendered page image, since the posted PDF has no text layer). The Township's pages say nothing on roof layers. Ordinance No. 82 adopts the 1993 BOCA National Building Code; the text above is the 2021 edition's, the 1993 text was not read for this record, and this record does not decide which code the Township applies to a reroof.

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

Yes.

What building code does Township of Westfall, 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, Westfall Township issues building permits from its Township office at 102 LaBarr Lane, Matamoras. Its Contacts page (read October 12, 2026) lists a "Building Inspector/Code Enforcement Officer" supplied by a consulting firm, with set weekly hours, and Ordinance No. 120 says "This Municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act" and that the Uniform Construction Code "is hereby adopted and incorporated herein by reference as the municipal building code of this Municipality" (transcribed from the rendered page image, since the posted PDF has no text layer). Ordinance No. 120 also says "All building code ordinances or portions of ordinances which were adopted by this Municipality on or before July 1, 1999, and which equal or exceed the requirements of the Code shall continue in full force and effect," and the Township posts Ordinance No. 82, which adopts "The BOCA National Building Code, Twelfth Edition, 1993" as the Township's building code and sets permit fees by resolution; this record read Ordinance 120 and the first three pages of Ordinance 82 from the rendered page images, does not decide whether Ordinance 82 remains in effect, and did not read the 1993 BOCA text. The Township's pages name no edition of the Uniform Construction Code.