Permitting Authorities / Collegeville Borough - Borough Office

Do you need a permit to replace a roof in Borough of Collegeville, PA?

Adopted code

Collegeville Borough - Borough Office

No, Borough of Collegeville, PA does not require a permit for like-for-like roof replacement (Collegeville Borough - Borough Office). Collegeville Borough lists "The re-roofing of residential dwellings" among "Alterations/Repairs Not Requiring a Permit." The Borough's Permit Applications page (read October 9, 2026) lists, under "Alterations/Repairs Not Requiring a Permit," "The re-roofing of residential dwellings. Accessory buildings for residential use also do not require re-roofing permits." Chapter 270 of the Borough Code, Construction Codes, Uniform (Ord. No. 503, June 2, 2004), adopts the Uniform Construction Code "as amended from time to time" and names no roof work either way. Its Section 270-6 keeps in force provisions adopted on or before July 1, 1999, says the list it gives is "not intended as an exhaustive list," and amends the State regulation in three places: a documents requirement for accessibility, "Delete Subpart (xvii) of Section 403.62(c)(1) in its entirety," and "A permit is required for the installation of all decks." In the regulation as first published in 2004, Section 403.62(c)(1)(xvii) was "Installation of an uncovered deck where the floor of the deck is no more than 30 inches above grade." The Borough's fee schedule (Resolution 2024-03) has one roofing line, "Roofing (Commercial Only) $150," under "BUILDING PERMIT: NON-RESIDENTIAL," and prices residential "Alterations/Renovations" generally; the earlier Resolution No. 2020-03, also posted, has the same commercial-only roofing line. The all-purpose building permit application lists "Roof" among its types of building permit without saying when one is needed. Under state law, Act 45 section 104(b)(5) and (6) list "Alterations to residential buildings which do not make structural changes or changes to means of egress" and "Repairs to residential buildings" among work the Act does not apply to, "except as might be required by ordinances in effect pursuant to section 303(b)(1) or adopted pursuant to section 503," and 34 Pa. Code 403.62(c) says "A permit is not required for the exceptions listed in § 403.1(b) (relating to scope) and the following, if the work does not violate a law or ordinance." The enacted building code text names no roof work on houses either way; the no-permit line is the Borough's stated practice, and this record does not decide whether it is the Borough's reading of the State's exclusion for house repairs. The fee schedule lists "Failure to Obtain Permit" at "Double the permit fees," and Section 270-8 says a person who violates the code "commits a summary offense and shall, upon conviction, be sentenced to pay a fine of not more than $1,000 and costs." The Borough Office is open Monday to Friday, 9 a.m. to 4 p.m., at 610-489-9208; commercial roofing is priced as a building permit. Read for this answer: Chapter 270 of the Borough Code, Construction Codes, Uniform (Sections 270-1 to 270-8), in full; the State regulation's 2004 text of Section 403.62(c)(1) that Section 270-6 refers to; the repeal and saving sections of Chapter 1; every page of searches of the whole Borough Code for "roof," which found no permit provision naming roof work, and for "reroofing," which found none; the Permit Applications, FAQ and Borough Administration pages; the all-purpose building permit application; and the fee schedules, Resolution 2024-03 and Resolution No. 2020-03.

Roof code checklist: Borough of Collegeville, PA

ItemAnswerCode citeSourceVerified
Permit to replace a roofNocollegeville-pa.gov2026-10-09
Repair permit thresholdPublishedpacodeandbulletin.gov2026-10-09
Layer limit / roof-overPublishedR908.3.1.1pacodeandbulletin.gov2026-10-09
Deck & sheathingPublishedR905.2.1pacodeandbulletin.gov2026-10-09
Drip edgeNot published
Ice & water shieldNot published
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingNopacodeandbulletin.gov2026-10-09
Wind design criteriaNot published
Adopted codePublishedSec. 270-1pacodeandbulletin.gov2026-10-09
Contractor license / registrationYespalegis.us2026-10-09
Sales & use taxPublishedpa.gov2026-10-09

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
Borough of Collegeville, Pennsylvania
Jurisdiction type
city
Address
491 East Main Street, Collegeville, PA 19426
Contact
  • url: https://www.collegeville-pa.gov/permit-applications/
  • phone: 610-489-9208
Roofing permit required
Not required
Contractor registration required
Required
Permit process note
Collegeville Borough lists "The re-roofing of residential dwellings" among "Alterations/Repairs Not Requiring a Permit." The Borough's Permit Applications page (read October 9, 2026) lists, under "Alterations/Repairs Not Requiring a Permit," "The re-roofing of residential dwellings. Accessory buildings for residential use also do not require re-roofing permits." Chapter 270 of the Borough Code, Construction Codes, Uniform (Ord. No. 503, June 2, 2004), adopts the Uniform Construction Code "as amended from time to time" and names no roof work either way. Its Section 270-6 keeps in force provisions adopted on or before July 1, 1999, says the list it gives is "not intended as an exhaustive list," and amends the State regulation in three places: a documents requirement for accessibility, "Delete Subpart (xvii) of Section 403.62(c)(1) in its entirety," and "A permit is required for the installation of all decks." In the regulation as first published in 2004, Section 403.62(c)(1)(xvii) was "Installation of an uncovered deck where the floor of the deck is no more than 30 inches above grade." The Borough's fee schedule (Resolution 2024-03) has one roofing line, "Roofing (Commercial Only) $150," under "BUILDING PERMIT: NON-RESIDENTIAL," and prices residential "Alterations/Renovations" generally; the earlier Resolution No. 2020-03, also posted, has the same commercial-only roofing line. The all-purpose building permit application lists "Roof" among its types of building permit without saying when one is needed. Under state law, Act 45 section 104(b)(5) and (6) list "Alterations to residential buildings which do not make structural changes or changes to means of egress" and "Repairs to residential buildings" among work the Act does not apply to, "except as might be required by ordinances in effect pursuant to section 303(b)(1) or adopted pursuant to section 503," and 34 Pa. Code 403.62(c) says "A permit is not required for the exceptions listed in § 403.1(b) (relating to scope) and the following, if the work does not violate a law or ordinance." The enacted building code text names no roof work on houses either way; the no-permit line is the Borough's stated practice, and this record does not decide whether it is the Borough's reading of the State's exclusion for house repairs. The fee schedule lists "Failure to Obtain Permit" at "Double the permit fees," and Section 270-8 says a person who violates the code "commits a summary offense and shall, upon conviction, be sentenced to pay a fine of not more than $1,000 and costs." The Borough Office is open Monday to Friday, 9 a.m. to 4 p.m., at 610-489-9208; commercial roofing is priced as a building permit. Read for this answer: Chapter 270 of the Borough Code, Construction Codes, Uniform (Sections 270-1 to 270-8), in full; the State regulation's 2004 text of Section 403.62(c)(1) that Section 270-6 refers to; the repeal and saving sections of Chapter 1; every page of searches of the whole Borough Code for "roof," which found no permit provision naming roof work, and for "reroofing," which found none; the Permit Applications, FAQ and Borough Administration pages; the all-purpose building permit application; and the fee schedules, Resolution 2024-03 and Resolution No. 2020-03.
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, Collegeville Borough administers the code itself through a retained inspector: Section 270-1 of the Borough Code says "The Borough of Collegeville hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," the Borough Administration page lists "Building, Electric & Plumbing Inspector: Keystone Municipal Services," and the Permit Applications page says "Building and sign permits are issued after review by the Codes Official and Zoning Officer" and that applications "must be delivered in person to the Borough Office located in the Collegeville Borough Municipal Building." Section 270-2 adopts the Uniform Construction Code, "as amended from time to time," as "the building code of the Borough of Collegeville"; Chapter 270 changes nothing in the code's roofing provisions, and no Borough page names a code edition.
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, Collegeville Borough administers the code itself through a retained inspector: Section 270-1 of the Borough Code says "The Borough of Collegeville hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," the Borough Administration page lists "Building, Electric & Plumbing Inspector: Keystone Municipal Services," and the Permit Applications page says "Building and sign permits are issued after review by the Codes Official and Zoning Officer" and that applications "must be delivered in person to the Borough Office located in the Collegeville Borough Municipal Building." Chapter 270 of the Borough Code, read in full, contains no UL 2218, Class 4 or hail-impact requirement, and no Borough page names one.
Repair permit threshold
Collegeville Borough says the re-roofing of houses needs no permit. The Borough's Permit Applications page (read October 9, 2026) lists, under "Alterations/Repairs Not Requiring a Permit," "The re-roofing of residential dwellings. Accessory buildings for residential use also do not require re-roofing permits." Chapter 270 of the Borough Code, Construction Codes, Uniform (Ord. No. 503, June 2, 2004), adopts the Uniform Construction Code "as amended from time to time" and names no roof work either way. Its Section 270-6 keeps in force provisions adopted on or before July 1, 1999, says the list it gives is "not intended as an exhaustive list," and amends the State regulation in three places: a documents requirement for accessibility, "Delete Subpart (xvii) of Section 403.62(c)(1) in its entirety," and "A permit is required for the installation of all decks." In the regulation as first published in 2004, Section 403.62(c)(1)(xvii) was "Installation of an uncovered deck where the floor of the deck is no more than 30 inches above grade." The Borough's fee schedule (Resolution 2024-03) has one roofing line, "Roofing (Commercial Only) $150," under "BUILDING PERMIT: NON-RESIDENTIAL," and prices residential "Alterations/Renovations" generally; the earlier Resolution No. 2020-03, also posted, has the same commercial-only roofing line. The all-purpose building permit application lists "Roof" among its types of building permit without saying when one is needed. Under state law, Act 45 section 104(b)(5) and (6) list "Alterations to residential buildings which do not make structural changes or changes to means of egress" and "Repairs to residential buildings" among work the Act does not apply to, "except as might be required by ordinances in effect pursuant to section 303(b)(1) or adopted pursuant to section 503," and 34 Pa. Code 403.62(c) says "A permit is not required for the exceptions listed in § 403.1(b) (relating to scope) and the following, if the work does not violate a law or ordinance." The enacted building code text names no roof work on houses either way; the no-permit line is the Borough's stated practice, and this record does not decide whether it is the Borough's reading of the State's exclusion for house repairs. The fee schedule lists "Failure to Obtain Permit" at "Double the permit fees," and Section 270-8 says a person who violates the code "commits a summary offense and shall, upon conviction, be sentenced to pay a fine of not more than $1,000 and costs." 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, Collegeville Borough administers the code itself through a retained inspector: Section 270-1 of the Borough Code says "The Borough of Collegeville hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," the Borough Administration page lists "Building, Electric & Plumbing Inspector: Keystone Municipal Services," and the Permit Applications page says "Building and sign permits are issued after review by the Codes Official and Zoning Officer" and that applications "must be delivered in person to the Borough Office located in the Collegeville Borough Municipal Building." No Borough text read for this record sets an area or cost threshold for roof work, and the Borough's no-permit line does not mention roof sheathing.
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, Collegeville Borough administers the code itself through a retained inspector: Section 270-1 of the Borough Code says "The Borough of Collegeville hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," the Borough Administration page lists "Building, Electric & Plumbing Inspector: Keystone Municipal Services," and the Permit Applications page says "Building and sign permits are issued after review by the Codes Official and Zoning Officer" and that applications "must be delivered in person to the Borough Office located in the Collegeville Borough Municipal Building." Chapter 270 changes nothing in the code's reroofing provisions, and the Borough's pages state no local rule on roof layers. The Borough lists "The re-roofing of residential dwellings" among work not requiring a permit, and no Borough ordinance read for this record names house reroofing as work the code reaches.
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, Collegeville Borough administers the code itself through a retained inspector: Section 270-1 of the Borough Code says "The Borough of Collegeville hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," the Borough Administration page lists "Building, Electric & Plumbing Inspector: Keystone Municipal Services," and the Permit Applications page says "Building and sign permits are issued after review by the Codes Official and Zoning Officer" and that applications "must be delivered in person to the Borough Office located in the Collegeville Borough Municipal Building." Chapter 270 changes nothing in the code's roof sheathing provisions, and the Borough's pages draw no separate line for roof sheathing. The Borough lists "The re-roofing of residential dwellings" among work not requiring a permit.
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. Collegeville Borough is in Montgomery County. The Borough's permit pages and fee schedule say nothing on sales tax.

Collegeville Borough takes building permit applications in person at the Borough Office, 491 East Main Street, Collegeville, and Keystone Municipal Services is its building inspector. 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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Sources

Roofing questions: Borough of Collegeville, PA

Do you need a permit to replace a roof in Borough of Collegeville, PA?

No, Borough of Collegeville, PA does not require a permit to replace a roof. Collegeville Borough says the re-roofing of houses needs no permit. The Borough's Permit Applications page (read October 9, 2026) lists, under "Alterations/Repairs Not Requiring a Permit," "The re-roofing of residential dwellings. Accessory buildings for residential use also do not require re-roofing permits." Chapter 270 of the Borough Code, Construction Codes, Uniform (Ord. No. 503, June 2, 2004), adopts the Uniform Construction Code "as amended from time to time" and names no roof work either way. Its Section 270-6 keeps in force provisions adopted on or before July 1, 1999, says the list it gives is "not intended as an exhaustive list," and amends the State regulation in three places: a documents requirement for accessibility, "Delete Subpart (xvii) of Section 403.62(c)(1) in its entirety," and "A permit is required for the installation of all decks." In the regulation as first published in 2004, Section 403.62(c)(1)(xvii) was "Installation of an uncovered deck where the floor of the deck is no more than 30 inches above grade." The Borough's fee schedule (Resolution 2024-03) has one roofing line, "Roofing (Commercial Only) $150," under "BUILDING PERMIT: NON-RESIDENTIAL," and prices residential "Alterations/Renovations" generally; the earlier Resolution No. 2020-03, also posted, has the same commercial-only roofing line. The all-purpose building permit application lists "Roof" among its types of building permit without saying when one is needed. Under state law, Act 45 section 104(b)(5) and (6) list "Alterations to residential buildings which do not make structural changes or changes to means of egress" and "Repairs to residential buildings" among work the Act does not apply to, "except as might be required by ordinances in effect pursuant to section 303(b)(1) or adopted pursuant to section 503," and 34 Pa. Code 403.62(c) says "A permit is not required for the exceptions listed in § 403.1(b) (relating to scope) and the following, if the work does not violate a law or ordinance." The enacted building code text names no roof work on houses either way; the no-permit line is the Borough's stated practice, and this record does not decide whether it is the Borough's reading of the State's exclusion for house repairs. The fee schedule lists "Failure to Obtain Permit" at "Double the permit fees," and Section 270-8 says a person who violates the code "commits a summary offense and shall, upon conviction, be sentenced to pay a fine of not more than $1,000 and costs." 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, Collegeville Borough administers the code itself through a retained inspector: Section 270-1 of the Borough Code says "The Borough of Collegeville hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," the Borough Administration page lists "Building, Electric & Plumbing Inspector: Keystone Municipal Services," and the Permit Applications page says "Building and sign permits are issued after review by the Codes Official and Zoning Officer" and that applications "must be delivered in person to the Borough Office located in the Collegeville Borough Municipal Building." No Borough text read for this record sets an area or cost threshold for roof work, and the Borough's no-permit line does not mention roof sheathing.

Can you roof over an existing roof in Borough of Collegeville, 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, Collegeville Borough administers the code itself through a retained inspector: Section 270-1 of the Borough Code says "The Borough of Collegeville hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," the Borough Administration page lists "Building, Electric & Plumbing Inspector: Keystone Municipal Services," and the Permit Applications page says "Building and sign permits are issued after review by the Codes Official and Zoning Officer" and that applications "must be delivered in person to the Borough Office located in the Collegeville Borough Municipal Building." Chapter 270 changes nothing in the code's reroofing provisions, and the Borough's pages state no local rule on roof layers. The Borough lists "The re-roofing of residential dwellings" among work not requiring a permit, and no Borough ordinance read for this record names house reroofing as work the code reaches.

Do roofing contractors need a license or registration in Borough of Collegeville, PA?

Yes.

What building code does Borough of Collegeville, 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, Collegeville Borough administers the code itself through a retained inspector: Section 270-1 of the Borough Code says "The Borough of Collegeville hereby elects to administer and enforce the provisions of the Pennsylvania Construction Code Act," the Borough Administration page lists "Building, Electric & Plumbing Inspector: Keystone Municipal Services," and the Permit Applications page says "Building and sign permits are issued after review by the Codes Official and Zoning Officer" and that applications "must be delivered in person to the Borough Office located in the Collegeville Borough Municipal Building." Section 270-2 adopts the Uniform Construction Code, "as amended from time to time," as "the building code of the Borough of Collegeville"; Chapter 270 changes nothing in the code's roofing provisions, and no Borough page names a code edition.