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Permitting Authorities / Illinois / City of Warrenville Building Division

Do you need a permit to replace a roof in Warrenville, IL?

Adopted code

City of Warrenville Building Division

Yes, a permit is required to replace a roof in Warrenville, IL, issued by City of Warrenville Building Division. A PERMIT IS REQUIRED TO REPAIR OR REPLACE A ROOF, PER THE CITY'S OWN HANDOUT. The City's Residential Roofing handout says "A permit is required for the repair or replacement of a roof" and lists the submittals: a "Completed Permit Application," a "Copy of the contract signed by the property owner" and a "Copy of State of Illinois Roofing License," the last two "Not required if work is performed by homeowner." It says "If work commences prior to permit issuance the building permit fee shall be doubled," gives fees of "$100 Residential Single Family," "$225 Multi-family" and "$250 Commercial," and lists two inspections: "Ice and Water Shield Inspection" and "Final Inspection." Inspections "must be scheduled at least one day prior to the desired inspection date." The handout says it "is for informational purposes only" and that "The provisions of the City's adopted codes prevail." Permit applications are completed online.

Roof code checklist: Warrenville, IL

ItemAnswerCode citeSourceVerified
Permit to replace a roofYeswarrenville.il.us2026-10-22
Repair permit thresholdPublishedwarrenville.il.us2026-10-22
Layer limit / roof-overPublishedwarrenville.il.us2026-10-22
Deck & sheathingPublishedwarrenville.il.us2026-10-22
Drip edgeYeswarrenville.il.us2026-10-22
Ice & water shieldYeswarrenville.il.us2026-10-22
Mid-roof inspectionYeswarrenville.il.us2026-10-22
Impact-resistant (Class 4) roofingNot published
Wind design criteriaNot published
Adopted codePublishedwarrenville.il.us2026-10-22
Contractor license / registrationYesilga.gov2026-09-18
Sales & use taxPublishedilga.gov2026-09-18

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

Jurisdiction
City of Warrenville, Illinois
Jurisdiction type
city
Address
3S258 Manning Avenue, Warrenville, IL 60555
Contact
  • url: https://www.warrenville.il.us/288/Community-Development
  • phone: 630-393-9050
Roofing permit required
Required
Contractor registration required
Required
Registration details
  • state_level: Illinois licenses roofing contractors statewide with no dollar threshold. 225 ILCS 335/9(2): "No work involving the construction, reconstruction, alteration, maintenance, or repair of any kind of roofing or waterproofing may be done except by a roofing contractor or a qualifying party licensed or credentialed under this Act." Under 225 ILCS 335/5(a-3), "A municipality or a county that requires a building permit may not issue a building permit to a roofing contractor unless that contractor has provided sufficient proof of current licensure as a roofing contractor by the State," and a holder of a limited license is restricted to permits for work on residential properties of 8 units or less. The Illinois Department of Financial and Professional Regulation lists "Roofing Contractor, Licensed" among the professions it licenses.
Permit process note
A PERMIT IS REQUIRED TO REPAIR OR REPLACE A ROOF, PER THE CITY'S OWN HANDOUT. The City's Residential Roofing handout says "A permit is required for the repair or replacement of a roof" and lists the submittals: a "Completed Permit Application," a "Copy of the contract signed by the property owner" and a "Copy of State of Illinois Roofing License," the last two "Not required if work is performed by homeowner." It says "If work commences prior to permit issuance the building permit fee shall be doubled," gives fees of "$100 Residential Single Family," "$225 Multi-family" and "$250 Commercial," and lists two inspections: "Ice and Water Shield Inspection" and "Final Inspection." Inspections "must be scheduled at least one day prior to the desired inspection date." The handout says it "is for informational purposes only" and that "The provisions of the City's adopted codes prevail." Permit applications are completed online.
Adopted code
THE 2021 INTERNATIONAL RESIDENTIAL CODE FOR RE-ROOFING, PER THE CITY'S OWN ROOFING HANDOUT. The City's Residential Roofing handout says "Re-roofing shall be done in conformance with section R908 of the 2021 International Residential Code," and that roofs shall be ventilated "per the 2021 IRC." The City's Construction Codes page says "The City of Warrenville adopts building and safety codes published by nationally recognized code agencies such as the International Code Council (ICC)" and that "Specific code adoption and amendments to the adopted codes can be found in Title 8 of the City's Municipal Code." Title 8 was not read for this record, so it does not quote the adopting ordinance or state whether the City has amended the IRC's roof provisions.
Drip edge
Required — REQUIRED AT EAVES AND RAKES, PER THE CITY'S OWN HANDOUT. The Residential Roofing handout says "A metal drip edge shall be provided at eave & rake edges per (IRC 905.2.8.5)." This rests on the department's own written sheet; the City's enacted amendment text was not read. About drip edge
Ice & water shield
Required — REQUIRED, PER THE CITY'S OWN HANDOUT. The Residential Roofing handout says "Ice & Water Shield shall extend from the lowest edge of the roof to a point at least 24 inches inside the inside of the exterior wall line of the building (IRC 905.2.7.)," and that on roofs with a slope of 8 in 12 or more "the ice barrier shall also be applied not less than 36 inches measured along the roof slope from the eave edge." This rests on the department's own written sheet; the City's enacted amendment text was not read. About ice & water barrier
Mid-roof inspection
Required — The City's Residential Roofing handout lists, under "Inspections Required," an "Ice and Water Shield Inspection" followed by a "Final Inspection." This rests on the department's own written sheet; the City's enacted amendment text was not read.
Repair permit threshold
NO SIZE OR DOLLAR THRESHOLD IS STATED; REPAIR ALSO REQUIRES A PERMIT. The City's Residential Roofing handout says "A permit is required for the repair or replacement of a roof," and names no area or cost below which roof repair is exempt. The City's Building Permit Information page adds that "Emergency repairs may be addressed without immediately obtaining a permit, but the permit must be applied for within 7 days of the emergency repair work being performed."
Roof layer limit / recover
TWO LAYERS AT MOST, PER THE CITY'S OWN HANDOUT. The Residential Roofing handout says "No more than two layers of existing roof covering are permitted," and that existing shingles cannot be covered over if "The existing roof already has two layers of asphalt shingles," if the existing roof or covering "is water-soaked or deteriorated to the point that it does not provide a smooth adequate base for additional roofing," or if the existing roof has "wood shakes, slate, clay, and cement or asbestos-cement tiles." The enacted amendment text was not read for this record.
Deck & sheathing requirements
The City's Residential Roofing handout says "Shingles shall be attached with nails long enough to penetrate through roof sheathing," that "Roofs shall be provided with ample ventilation, per the 2021 IRC by either ridge vent or another approved vent system," and that contractors installing or repairing modified bitumen roofing "shall provide a fire prevention plan to the code official that includes asphalt kettle and fire extinguisher locations."
Sales & use tax
Illinois taxes the roofer, not the job, and the operative rate is not keyed to the Warrenville job address. Under 86 Ill. Adm. Code 130.1940(c), a construction contractor "does not incur Retailers' Occupation Tax liability as to receipts from labor furnished and tangible personal property (materials and fixtures) incorporated into a structure," but "incurs Use Tax on the cost price of the tangible personal property that is incorporated into real estate," with "roofing materials" named in the rule's own list of examples. Repair and replacement are taxed identically: 130.1940(a)(3) defines "construct" to include "repair, renovate or remodel." The Illinois Department of Revenue states the Use Tax rate as "6.25% of the purchase price or fair market value, whichever is greater." Where the contractor buys for resale, the local tax follows "the place of business at or from which the contractor or builder handles the transaction" (130.2075(b)(3)), so the combined rate on materials is the supply house's or the contractor's, which this record does not pin down. The authoritative lookup is the Illinois Department of Revenue's MyTax Illinois Tax Rate Finder.

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Building permits in the City of Warrenville, Illinois, in DuPage County, are issued by the Building Division of the City's Community Development Department at 3S258 Manning Avenue. The Illinois Capital Development Board says "The State has not adopted a building code for repairs to existing single family residences," so Warrenville's roofing rules are its own: the City's Residential Roofing handout says re-roofing must conform to section R908 of the 2021 International Residential Code, and the City codifies its code adoption and amendments in Title 8 of its Municipal Code. The handout says a permit is required to repair or replace a roof; this listing covers the office's contact details, the City's own statements on code and permits, and the rules state law sets for every Illinois roofer.

Working an insurance claim in Warrenville, IL? Everything on this page (drip edge, ice & water shield, inspections, Class 4 rules) formatted as a claim-ready evidence pack: verbatim ordinance quotes, code section cites, verification dates, and official source links, ready to attach to a supplement. See a real sample pack (PDF, 4 pages, free).

Code items like drip edge and ice & water shield are what adjusters ask you to document.

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Sources

Roofing questions: Warrenville, IL

Do you need a permit to replace a roof in Warrenville, IL?

Yes, a permit is required to replace a roof in Warrenville, IL. NO SIZE OR DOLLAR THRESHOLD IS STATED; REPAIR ALSO REQUIRES A PERMIT. The City's Residential Roofing handout says "A permit is required for the repair or replacement of a roof," and names no area or cost below which roof repair is exempt. The City's Building Permit Information page adds that "Emergency repairs may be addressed without immediately obtaining a permit, but the permit must be applied for within 7 days of the emergency repair work being performed."

Is ice & water shield required in Warrenville, IL?

Yes. REQUIRED, PER THE CITY'S OWN HANDOUT. The Residential Roofing handout says "Ice & Water Shield shall extend from the lowest edge of the roof to a point at least 24 inches inside the inside of the exterior wall line of the building (IRC 905.2.7.)," and that on roofs with a slope of 8 in 12 or more "the ice barrier shall also be applied not less than 36 inches measured along the roof slope from the eave edge." This rests on the department's own written sheet; the City's enacted amendment text was not read.

Is drip edge required in Warrenville, IL?

Yes. REQUIRED AT EAVES AND RAKES, PER THE CITY'S OWN HANDOUT. The Residential Roofing handout says "A metal drip edge shall be provided at eave & rake edges per (IRC 905.2.8.5)." This rests on the department's own written sheet; the City's enacted amendment text was not read.

Can you roof over an existing roof in Warrenville, IL?

TWO LAYERS AT MOST, PER THE CITY'S OWN HANDOUT. The Residential Roofing handout says "No more than two layers of existing roof covering are permitted," and that existing shingles cannot be covered over if "The existing roof already has two layers of asphalt shingles," if the existing roof or covering "is water-soaked or deteriorated to the point that it does not provide a smooth adequate base for additional roofing," or if the existing roof has "wood shakes, slate, clay, and cement or asbestos-cement tiles." The enacted amendment text was not read for this record.

Do roofing contractors need a license or registration in Warrenville, IL?

Yes.

What building code does Warrenville, IL use?

THE 2021 INTERNATIONAL RESIDENTIAL CODE FOR RE-ROOFING, PER THE CITY'S OWN ROOFING HANDOUT. The City's Residential Roofing handout says "Re-roofing shall be done in conformance with section R908 of the 2021 International Residential Code," and that roofs shall be ventilated "per the 2021 IRC." The City's Construction Codes page says "The City of Warrenville adopts building and safety codes published by nationally recognized code agencies such as the International Code Council (ICC)" and that "Specific code adoption and amendments to the adopted codes can be found in Title 8 of the City's Municipal Code." Title 8 was not read for this record, so it does not quote the adopting ordinance or state whether the City has amended the IRC's roof provisions.