Roofing - Commercial

Applicable Codes:
2024 International Residential Code
Illinois Energy Conservation Code (current edition)

Please submit the following information:

1. Contract, with scope of work noted.
2. International Energy Code Commercial form (which verifies insulation information). https://www.wheaton.il.us/DocumentCenter/View/12170/2018-IECC-commercial-roof-handout 
3. Demo and/or Construction Site Regulations Acknowledgement form (attached PDF).
4. Apply for a Street Occupancy Permit (If the staging area is in the city right-of-way)
5. Unlimited State of Illinois roofing license (must be provided at contractor registration).

Significant Code Requirements

• R-30 when the insulation is entirely above the roof deck.
• R-38 when the insulation is installed in the attic and other areas.
• All roof coverings, underlayment, flashing, and associated components must be installed per the manufacturer's installation specifications.
• Materials permitted by the applicable code for new construction shall be used. Like materials shall be permitted for repairs, provided that hazards to life, health, or property are not created. Hazardous materials shall not be used where the code for new construction would not allow the use of these materials in buildings of similar occupancy, purpose, and location.
• ROOF RECOVER/REROOFING - The process of installing an additional roof covering over an existing roof covering without removing the existing roof covering.
• ROOF REPAIR - Reconstruction or renewal of any part of an existing roof for the purpose of its maintenance. It is limited to actions aimed at maintaining an existing roof and restoring portions that have been damaged. Roof repairs are typically exempt from permits.
• ROOF REPLACEMENT - An alteration that includes the removal of all existing layers of roof assembly materials down to the roof deck and the installation of replacement materials above the existing roof deck.
• IECC C503.1 - Alterations to any building or structure shall comply with the requirements of Section C503 and the code for new construction. Alterations shall be such that the existing building or structure is no less conforming to the provisions of this code than the existing building or structure was prior to the alteration. Alterations to an existing building, building system, or portion thereof shall conform to the provisions of this code as those provisions relate to new construction without requiring the unaltered portions of the existing building or building system to comply with this code. Alterations shall not create an unsafe or hazardous condition or overload existing building systems.
  Exceptions: The following alterations need not comply with the requirements for new construction, provided the energy use of the building is not increased:
  1. Storm windows installed over existing fenestration.
  2. Surface-applied window film installed on existing single-pane fenestration assemblies, reducing solar heat gain, provided the code does not require the glazing or fenestration to be replaced.
  3. Roof recover.
  4. Roof replacement where the roof assembly insulation is integral to or located below the structural roof deck.
  5. Air barriers shall not be required for roof recovery and roof replacement where the alterations or renovations to the building do not include alterations, renovations, or repairs to the remainder of the building's thermal envelope.
  6. An existing building undergoing alterations that complies with IECC Section C407 (Simulated Building Performance).

To apply for a permit

Maintstar - h2.maintstar.co/wheaton/portal/#/

Contractor Registration Requirements

Webpage - www.wheaton.il.us/890/Contractor-Registration-Requirements

Contact Us

City of Wheaton Building & Code Enforcement Department
Address: 303 W. Wesley Street, Wheaton, IL 60187
Phone Calls:
Questions regarding this information: 630-260-2050
Business hours: Monday-Friday 8:00 a.m. - 5:00 p.m.
Fax: 630-260-2195

Revised 12/3/2025