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Permitting Authorities / Montgomery Township - Department of Planning and Zoning

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

Adopted code

Montgomery Township - Department of Planning and Zoning

Yes, a permit is required to replace a roof in Township of Montgomery, PA, issued by Montgomery Township - Department of Planning and Zoning. Montgomery Township's Department of Planning and Zoning treats reroofing of more than 25 percent of a roof as permit work. The department's Roofing Permit application (read October 6, 2026), for residential and commercial work, lists as proposed work "Roofing (2nd Layer) if more than 25%" and "Reroofing (remove/replace) if more than 25% – ice shield required per manufacturer," asks for the number of squares and a "Copy of Signed Contract with Scope of Work to be Performed," and says "Contractors Must Fully Register." A full reroof is more than 25 percent of the roof; the form does not say what it requires for 25 percent or less. The Planning & Zoning page lists "Roofing" among "COMMON PROJECTS THAT REQUIRE PERMITS," and the Township's 2026 fee schedule charges residential "Roofing" at "First $1,000 or a fraction thereof $35" and $10 for each additional $1,000, plus the $4.50 State fee. Chapter 80 of the Township Code adopts the Uniform Construction Code "as amended from time to time" (Section 80-2) and names no roof work. Section 80-8.B says "Section 403.62(c)(1)(xvii) is deleted in its entirety"; the State's current Section 403.62(c) numbers its exceptions (1) to (9), with no item (1)(xvii), and this record has not read the earlier text of the regulation that the 2004 ordinance refers to. 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 fee schedule charges "Normal fee X2" for permits obtained after a stop-work order or for "construction, installation, etc., that has been started or completed without a permit," and the Roofing Permit form says "Failure to comply with the above will result in a STOP WORK order." Under Section 82-5.B of the Township Code, contractors doing home improvement work must, "prior to receiving a building or other permit, provide proof that said contractor is registered with the Commonwealth of Pennsylvania." The department's Residential Re-Roofing Requirements sheet lists requirements "derived from the current IRC codes for single homes and townhouses," asks that manufacturers' instructions be provided where they differ from the code, and says "Once completed, an inspection is required of the finished work"; inspections are requested at 215-393-6920 at least 24 to 48 hours ahead. The Township offices are open Monday to Friday, 8:30 am to 4:30 pm. Read for this answer: Chapter 80 of the Township Code, Construction Codes, Uniform (Sections 80-1 to 80-12), in full; Section 82-5 of Chapter 82, Contractors; a search of the whole Township Code for "roof," which found no permit provision naming roof work; the department's Planning & Zoning and Codes & Permits pages, its Current Building Codes and Local Amendments page, its Roofing Permit application and its Residential Re-Roofing Requirements sheet; and the residential construction and penalty sections of the 2026 fee schedule. Chapter 69, Building Construction and Fire Prevention, was not read beyond its contents.

Roof code checklist: Township of Montgomery, PA

ItemAnswerCode citeSourceVerified
Permit to replace a roofYesmontgomerytwp.org2026-10-06
Repair permit thresholdPublishedpacodeandbulletin.gov2026-10-06
Layer limit / roof-overPublishedR908.3.1.1pacodeandbulletin.gov2026-10-06
Deck & sheathingPublishedR905.2.1pacodeandbulletin.gov2026-10-06
Drip edgeNot published
Ice & water shieldNot published
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingNopacodeandbulletin.gov2026-10-06
Wind design criteriaNot published
Adopted codePublishedSec. 80-1pacodeandbulletin.gov2026-10-06
Contractor license / registrationYespalegis.us2026-10-06
Sales & use taxPublishedpa.gov2026-10-06

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 Montgomery, Pennsylvania
Jurisdiction type
city
Address
1001 Stump Road, Montgomeryville, PA 18936
Contact
  • url: https://www.montgomerytwp.org/department/division.php?structureid=77
  • phone: 215-393-6920
Roofing permit required
Required
Contractor registration required
Required
Permit process note
Montgomery Township's Department of Planning and Zoning treats reroofing of more than 25 percent of a roof as permit work. The department's Roofing Permit application (read October 6, 2026), for residential and commercial work, lists as proposed work "Roofing (2nd Layer) if more than 25%" and "Reroofing (remove/replace) if more than 25% – ice shield required per manufacturer," asks for the number of squares and a "Copy of Signed Contract with Scope of Work to be Performed," and says "Contractors Must Fully Register." A full reroof is more than 25 percent of the roof; the form does not say what it requires for 25 percent or less. The Planning & Zoning page lists "Roofing" among "COMMON PROJECTS THAT REQUIRE PERMITS," and the Township's 2026 fee schedule charges residential "Roofing" at "First $1,000 or a fraction thereof $35" and $10 for each additional $1,000, plus the $4.50 State fee. Chapter 80 of the Township Code adopts the Uniform Construction Code "as amended from time to time" (Section 80-2) and names no roof work. Section 80-8.B says "Section 403.62(c)(1)(xvii) is deleted in its entirety"; the State's current Section 403.62(c) numbers its exceptions (1) to (9), with no item (1)(xvii), and this record has not read the earlier text of the regulation that the 2004 ordinance refers to. 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 fee schedule charges "Normal fee X2" for permits obtained after a stop-work order or for "construction, installation, etc., that has been started or completed without a permit," and the Roofing Permit form says "Failure to comply with the above will result in a STOP WORK order." Under Section 82-5.B of the Township Code, contractors doing home improvement work must, "prior to receiving a building or other permit, provide proof that said contractor is registered with the Commonwealth of Pennsylvania." The department's Residential Re-Roofing Requirements sheet lists requirements "derived from the current IRC codes for single homes and townhouses," asks that manufacturers' instructions be provided where they differ from the code, and says "Once completed, an inspection is required of the finished work"; inspections are requested at 215-393-6920 at least 24 to 48 hours ahead. The Township offices are open Monday to Friday, 8:30 am to 4:30 pm. Read for this answer: Chapter 80 of the Township Code, Construction Codes, Uniform (Sections 80-1 to 80-12), in full; Section 82-5 of Chapter 82, Contractors; a search of the whole Township Code for "roof," which found no permit provision naming roof work; the department's Planning & Zoning and Codes & Permits pages, its Current Building Codes and Local Amendments page, its Roofing Permit application and its Residential Re-Roofing Requirements sheet; and the residential construction and penalty sections of the 2026 fee schedule. Chapter 69, Building Construction and Fire Prevention, was not read beyond its contents.
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, Montgomery Township administers the code itself: Section 80-1 of the Township Code says "This municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Department of Planning and Zoning, at 1001 Stump Road, issues building and roofing permits and schedules the inspections ("To schedule, contact the Planning & Zoning Office at least 24-48 hours in advance at 215-393-6920"). Section 80-2 adopts the Uniform Construction Code, "as amended from time to time," as the municipal building code and names no edition; the department's Current Building Codes and Local Amendments page says "The codes in force at this time are as follows" and lists, "As Modified by the State," the "2021 International Residential Code" and the "2021 International Existing Building Code." The same page says "Adopted amendments to the 1996 Code series still apply"; the amendments it lists concern historical review, fire suppression, hose connections, key boxes, building numbering, grease traps, sewer venting and carbon monoxide detectors, and none touches roofing. Section 80-8 amends the State's administrative rules, adding wall form, backfill, slab and insulation inspections to the residential list and naming no roof inspection. Chapter 80 changes nothing in the code's roofing provisions.
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, Montgomery Township administers the code itself: Section 80-1 of the Township Code says "This municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Department of Planning and Zoning, at 1001 Stump Road, issues building and roofing permits and schedules the inspections ("To schedule, contact the Planning & Zoning Office at least 24-48 hours in advance at 215-393-6920"). Chapter 80 of the Township Code, the department's Current Building Codes and Local Amendments page and its Residential Re-Roofing Requirements sheet set no UL 2218, Class 4 or hail-impact requirement; the department's page names the 2021 International Residential Code.
Repair permit threshold
Montgomery Township's Roofing Permit application lists reroofing of more than 25 percent of a roof as permit work. The department's Roofing Permit application (read October 6, 2026), for residential and commercial work, lists as proposed work "Roofing (2nd Layer) if more than 25%" and "Reroofing (remove/replace) if more than 25% – ice shield required per manufacturer," asks for the number of squares and a "Copy of Signed Contract with Scope of Work to be Performed," and says "Contractors Must Fully Register." A full reroof is more than 25 percent of the roof; the form does not say what it requires for 25 percent or less. The Planning & Zoning page lists "Roofing" among "COMMON PROJECTS THAT REQUIRE PERMITS," and the Township's 2026 fee schedule charges residential "Roofing" at "First $1,000 or a fraction thereof $35" and $10 for each additional $1,000, plus the $4.50 State fee. Chapter 80 of the Township Code adopts the Uniform Construction Code "as amended from time to time" (Section 80-2) and names no roof work. Section 80-8.B says "Section 403.62(c)(1)(xvii) is deleted in its entirety"; the State's current Section 403.62(c) numbers its exceptions (1) to (9), with no item (1)(xvii), and this record has not read the earlier text of the regulation that the 2004 ordinance refers to. 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 fee schedule charges "Normal fee X2" for permits obtained after a stop-work order or for "construction, installation, etc., that has been started or completed without a permit," and the Roofing Permit form says "Failure to comply with the above will result in a STOP WORK order." 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, Montgomery Township administers the code itself: Section 80-1 of the Township Code says "This municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Department of Planning and Zoning, at 1001 Stump Road, issues building and roofing permits and schedules the inspections ("To schedule, contact the Planning & Zoning Office at least 24-48 hours in advance at 215-393-6920"). The only threshold the Township publishes for roof work is the Roofing Permit application's "if more than 25%"; Chapter 80 sets none.
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, Montgomery Township administers the code itself: Section 80-1 of the Township Code says "This municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Department of Planning and Zoning, at 1001 Stump Road, issues building and roofing permits and schedules the inspections ("To schedule, contact the Planning & Zoning Office at least 24-48 hours in advance at 215-393-6920"). Chapter 80 of the Township Code changes nothing in the code's reroofing provisions. The department's Roofing Permit application lists "Roofing (2nd Layer) if more than 25%" as permit work; it does not state a layer limit.
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, Montgomery Township administers the code itself: Section 80-1 of the Township Code says "This municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Department of Planning and Zoning, at 1001 Stump Road, issues building and roofing permits and schedules the inspections ("To schedule, contact the Planning & Zoning Office at least 24-48 hours in advance at 215-393-6920"). Chapter 80 of the Township Code changes nothing in the code's roof sheathing provisions. The department's Residential Re-Roofing Requirements sheet says that for a townhouse, "when/if replaced, fire retardant wood shall have the stamps or seals face down into the attic space," and that ridge venting "shall not be cut into the sheathing within four feet of a fire rated party wall."
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. Montgomery Township is in Montgomery County. The department's pages and the fee schedule say nothing on sales tax.

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Montgomery Township's Department of Planning and Zoning, at 1001 Stump Road, Montgomeryville, issues building permits for work in the Township and has its own Roofing Permit application for reroofing more than 25 percent of a roof. 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 Montgomery, PA

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

Yes, a permit is required to replace a roof in Township of Montgomery, PA. Montgomery Township's Roofing Permit application lists reroofing of more than 25 percent of a roof as permit work. The department's Roofing Permit application (read October 6, 2026), for residential and commercial work, lists as proposed work "Roofing (2nd Layer) if more than 25%" and "Reroofing (remove/replace) if more than 25% – ice shield required per manufacturer," asks for the number of squares and a "Copy of Signed Contract with Scope of Work to be Performed," and says "Contractors Must Fully Register." A full reroof is more than 25 percent of the roof; the form does not say what it requires for 25 percent or less. The Planning & Zoning page lists "Roofing" among "COMMON PROJECTS THAT REQUIRE PERMITS," and the Township's 2026 fee schedule charges residential "Roofing" at "First $1,000 or a fraction thereof $35" and $10 for each additional $1,000, plus the $4.50 State fee. Chapter 80 of the Township Code adopts the Uniform Construction Code "as amended from time to time" (Section 80-2) and names no roof work. Section 80-8.B says "Section 403.62(c)(1)(xvii) is deleted in its entirety"; the State's current Section 403.62(c) numbers its exceptions (1) to (9), with no item (1)(xvii), and this record has not read the earlier text of the regulation that the 2004 ordinance refers to. 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 fee schedule charges "Normal fee X2" for permits obtained after a stop-work order or for "construction, installation, etc., that has been started or completed without a permit," and the Roofing Permit form says "Failure to comply with the above will result in a STOP WORK order." 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, Montgomery Township administers the code itself: Section 80-1 of the Township Code says "This municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Department of Planning and Zoning, at 1001 Stump Road, issues building and roofing permits and schedules the inspections ("To schedule, contact the Planning & Zoning Office at least 24-48 hours in advance at 215-393-6920"). The only threshold the Township publishes for roof work is the Roofing Permit application's "if more than 25%"; Chapter 80 sets none.

Can you roof over an existing roof in Township of Montgomery, 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, Montgomery Township administers the code itself: Section 80-1 of the Township Code says "This municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Department of Planning and Zoning, at 1001 Stump Road, issues building and roofing permits and schedules the inspections ("To schedule, contact the Planning & Zoning Office at least 24-48 hours in advance at 215-393-6920"). Chapter 80 of the Township Code changes nothing in the code's reroofing provisions. The department's Roofing Permit application lists "Roofing (2nd Layer) if more than 25%" as permit work; it does not state a layer limit.

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

Yes.

What building code does Township of Montgomery, 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, Montgomery Township administers the code itself: Section 80-1 of the Township Code says "This municipality hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," and the Township's Department of Planning and Zoning, at 1001 Stump Road, issues building and roofing permits and schedules the inspections ("To schedule, contact the Planning & Zoning Office at least 24-48 hours in advance at 215-393-6920"). Section 80-2 adopts the Uniform Construction Code, "as amended from time to time," as the municipal building code and names no edition; the department's Current Building Codes and Local Amendments page says "The codes in force at this time are as follows" and lists, "As Modified by the State," the "2021 International Residential Code" and the "2021 International Existing Building Code." The same page says "Adopted amendments to the 1996 Code series still apply"; the amendments it lists concern historical review, fire suppression, hose connections, key boxes, building numbering, grease traps, sewer venting and carbon monoxide detectors, and none touches roofing. Section 80-8 amends the State's administrative rules, adding wall form, backfill, slab and insulation inspections to the residential list and naming no roof inspection. Chapter 80 changes nothing in the code's roofing provisions.