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Municipal Code of Chicago tit. 14B, ch. 14B-26
in effect

Municipal Code of Chicago § 14B-26-2601 General.

14B-26-2601 General. The provisions of Section 2601 of IBC are adopted by reference with the following modification: 1. Revise Section 2601.1 by replacing "foam plastic insulation" with "foam plastic insulation (including insulated panels with foam plastic insulation)."

Municipal Code of Chicago § 14B-26-2603 Foam plastic insulation.

14B-26-2603 Foam plastic insulation. The provisions of Section 2603 of IBC are adopted by reference with the following modifications: 1. In provisions adopted by reference, reset the following term in italic type: "foam plastic insulation." 2. Revise Section 2603.1 by replacing "foam plastic insulation" with "foam plastic insulation (including insulated panels with foam plastic insulation)." 3. Revise exception 2 to Section 2603.3 to read: "2. In cold storage buildings, ice plants, food plants, food processing rooms and similar areas, foam plastic insulation where tested in a thickness of 4 inches (102 mm) shall be permitted in a thickness up to 10 inches (254 mm) where the building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1." 4. Revise exception 4 to Section 2603.3 by replacing "approved" with "approved." 5. Delete exception 5 to Section 2603.3. 6. Revise Section 2603.4 by replacing "an approved" with "a." 7. Revise item 1 of Section 2603.4.1.5 to read: "1. The roof assembly is separated from the interior of the building by wood structural panel sheathing not less than 0.47 inch (11.9 mm) in thickness bonded with exterior glue, with edges supported by blocking, tongue-and-groove joints or other approved type of edge support or material." 8. [Reserved.] 9. Delete Section 2603.4.1.8. 10. Revise the exception to Section 2603.4.1.9 to read: "Exception: Garage doors using foam plastic insulation complying with Section 2603.3 in detached and attached private garages associated with buildings of Group R-5 occupancy need not be provided with a thermal barrier." 11. Delete Section 2603.4.1.12. 12. Revise Section 2603.4.1.14 by replacing "approved" with "approved." 12.1. Revise the third sentence of Section 2603.5 to read: "Exterior walls of buildings of Type V construction shall comply with Sections 2603.2, 2603.3, 2603.4 and 2603.5.7." 13. Revise Section 2603.7 to read: "2603.7 Foam plastic as interior finish or interior trim in plenum-served spaces. Foam plastic used as interior wall or ceiling finish, or interior trim in plenum-served spaces, shall exhibit a flame spread index of 25 or less and a smoke-developed index of 50 or less when tested in accordance with ASTM E84 or UL 723 at the maximum thickness and density intended for use, and shall be tested in accordance with NFPA 286 and meet the acceptance criteria of Section 803.1.1. As an alternative to testing to NFPA 286, the foam plastic may be approved based on tests conducted in accordance with Section 2603.9. Exceptions: 1. Foam plastic used as interior wall or ceiling finish or interior trim in plenum-served spaces shall exhibit a flame spread index of 75 or less and a smoke-developed index of 450 or less when tested in accordance with ASTM E84 or UL 723 at the maximum thickness and density intended for use, where it is separated from the airflow in the plenum by a thermal barrier complying with Section 2603.4. 2. Foam plastic used as interior wall or ceiling finish or interior trim in plenum-served spaces shall exhibit a flame spread index of 75 or less and a smoke-developed index of 450 or less when tested in accordance with ASTM E84 or UL 723 at the maximum thickness and density intended for use, where it is separated from the airflow in the plenum by corrosion-resistant steel having a base metal thickness of not less than 0.0160 inch (0.4 mm). 3. Foam plastic used as interior wall or ceiling finish or interior trim in plenum-served spaces shall exhibit a flame spread index of 75 or less and a smoke-developed index of 450 or less when tested in accordance with ASTM E84 or UL 723 at the maximum thickness and density intended for use, where it is separated from the airflow in the plenum by not less than a 1-inch (25 mm) thickness of masonry or concrete." 14. Delete Section 2603.8 and Figure 2603.8. 15. Revise Section 2603.9 by replacing "specifically approved" with "approved." 16. Revise Section 2603.11 by replacing "approved" with "engineered." 17. Revise exception 1 to Section 2603.11 by deleting "approved." Revise Section 2603.12 to read: "2603.12 Cladding attachment over foam sheathing to cold-formed steel framing. Cladding shall be specified and installed in accordance with Chapter 14 and the cladding manufacturer’s installation instructions, including any limitations for use over foam plastic sheathing, or an engineered design. Where used, furring and furring attachments shall be designed to resist design loads determined in accordance with Chapter 16. In addition, the cladding or furring attachments through foam sheathing to cold-formed steel framing shall meet or exceed the minimum fastening requirements of Sections 2603.12.1 and 2603.12.2, or an engineered design for support of cladding weight. Exceptions: 1. Where the cladding manufacturer has provided installation instructions for application over foam sheathing, those requirements shall apply. 2. For exterior insulation and finish systems, refer to Section 1407. 3. For anchored masonry or stone veneer installed over foam sheathing, refer to Section 1404." 18. Revise note c to Table 2603.12.2 by replacing "approved" with "engineered." 19. Revise Section 2603.13 to read: "2603.13 Cladding attachment over foam sheathing to wood framing. Cladding shall be specified and installed in accordance with Chapter 14 and the cladding manufacturer’s installation instructions. Where used, furring and furring attachments shall be designed to resist design loads determined in accordance with Chapter 16. In addition, the cladding or furring attachments through foam sheathing to framing shall meet or exceed the minimum fastening requirements of Section 2603.13.1 or 2603.13.2, or an engineered design for support of cladding weight. Exceptions: 1. Where the cladding manufacturer has provided installation instructions for application over foam sheathing, those requirements shall apply. 2. For exterior insulation and finish systems, refer to Section 1407. 3. For anchored masonry veneer or anchored stone veneer installed over foam sheathing, refer to Section 1404." 20. Revise note c to Table 2603.13.2 by replacing "approved" with "engineered." (Amend Coun. J. 2-19-20, p. 14473, Art. II, § 88; Amend Coun. J. 6-17-26, p. 45214, Art. IV, § 36)

Municipal Code of Chicago § 14B-26-2604 Interior finish and trim.

14B-26-2604 Interior finish and trim. The provisions of Section 2604 of IBC are adopted by reference with the following modification: 1. Revise Section 2604.1 by deleting "where approved."

Municipal Code of Chicago § 14B-26-2605 Plastic veneer.

14B-26-2605 Plastic veneer. The provisions of Section 2605 of IBC are adopted by reference with the following modification: 1. Revise item 2 of Section 2605.2 by replacing "50 feet (15 240 mm)" with "40 feet (12 190 mm)" and "grade" with "grade plane." (Amend Coun. J. 2-19-20, p. 14473, Art. II, § 89)

Municipal Code of Chicago § 14B-26-2606 Light-transmitting plastics.

14B-26-2606 Light-transmitting plastics. The provisions of Section 2606 of IBC are adopted by reference with the following modifications: 1. In provisions adopted by reference, reset the following terms in italic type: "approved"; "greenhouse" and "light- diffusing system." 2. Revise items 1 and 2 of Section 2606.7 to read: "1. Group A with an occupant load of 300 or more. 2. Group E." 3. Revise item 5 of Section 2606.7 to read: "5. Interior exit stairways, interior exit ramps and exit passageways. 4. Revise Section 2606.7.4 to read: "2606.7.4 Fire suppression system. In buildings that are equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1, light-diffusing systems shall be protected both above and below unless the automatic sprinkler system has been approved for installation only above the light-diffusing system. Areas of light-diffusing systems that are protected in accordance with this section shall not be limited." 5. Revise Section 2606.7.5 by deleting "approved." (Amend Coun. J. 2-19-20, p. 14473, Art. II, § 90)

Municipal Code of Chicago § 14B-26-2607 Light-transmitting plastic wall panels.

14B-26-2607 Light-transmitting plastic wall panels. The provisions of Section 2607 of IBC are adopted by reference with the following modifications: 1. In provisions adopted by reference, reset the following terms in italic type: "greenhouse" and "light-transmitting plastic wall panels." 2. Revise Section 2607.1 to read: "2607.1 General. Light-transmitting plastics shall not be used as wall panels in exterior walls in occupancies in Groups A-1, A-2, A-3, A-4, E, H, I-2 and I-3. In other groups, light-transmitting plastics shall be permitted to be used as wall panels in exterior walls, provided that the walls are not required to have a fire-resistance rating and the installation conforms to the requirements of this section. Such panels shall be erected and anchored on a foundation, waterproofed or otherwise protected from moisture absorption and sealed with a coat of mastic or other approved waterproof coating. Light-transmitting plastic wall panels shall comply with Section 2606." 3. Revise Section 2607.3 to read: "2607.3 Height limitation. Light-transmitting plastics shall not be installed more than 40 feet (12 190 mm) above grade plane." 4. Revise the exceptions to Section 2607.4 by deleting "approved." 5. Revise Section 2607.5 to read: "2607.5 Automatic sprinkler system. Where the building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1, the maximum percentage area of exterior wall in any story in light-transmitting plastic wall panels and the maximum square footage of a single area given in Table 2607.4 shall be increased 100 percent, but the area of light-transmitting plastic wall panels shall not exceed 50 percent of the exterior wall area in any story, or the area permitted by Section 705.8 for unprotected openings, whichever is smaller."

Municipal Code of Chicago § 14B-26-2608 Light-transmitting plastic glazing.

14B-26-2608 Light-transmitting plastic glazing. The provisions of Section 2608 of IBC are adopted by reference with the following modifications: 1. Revise item 2 to section 2608.2, excluding its exception, to read: "2. Flame barriers extending 30 inches (762 mm) beyond the exterior wall in the plane of the floor, or vertical panels not less than 4 feet (1219 mm) in height, shall be installed between glazed units located in adjacent stories." 2. Revise item 3 to section 2608.2, including its exception, to read: "3. Light-transmitting plastics shall not be installed more than 40 feet (12 190 mm) above grade plane."

Municipal Code of Chicago § 14B-26-2609 Light-transmitting plastic roof panels.

14B-26-2609 Light-transmitting plastic roof panels. The provisions of Section 2609 of IBC are adopted by reference with the following modifications: 1. In provisions adopted by reference, reset the following terms in italic type: "fire-resistance rating" and "light- transmitting plastic roof panels." 2. Revise exception 3 to Section 2609.4 to read: "3. Greenhouses that are occupied for growing or maintaining plants, without public access, shall be exempt from the area limitations of Table 2609.4 provided that they have a minimum fire separation distance of 10 feet (3048 mm)." 3. Delete exception 4 to Section 2609.4.

Municipal Code of Chicago § 14B-26-2610 Light-transmitting plastic skylight glazing.

14B-26-2610 Light-transmitting plastic skylight glazing. The provisions of Section 2610 of IBC are adopted by reference with the following modifications: 1. In provisions adopted by reference, reset the following terms in italic type: "approved"; "light-transmitting plastic roof panels"; "roof covering" and "unit skylight." 2. Revise exception 1 to Section 2610.2 to read: "1. Curbs shall not be required for skylights used on roofs having a minimum slope of three units vertical in 12 units horizontal (25-percent slope) in occupancies in Group R-3 or R-5 and on buildings with a nonclassified roof covering." 3. Revise the exception to Section 2610.4 to read: "Exception: The area limitation shall not apply where the building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1." 4. Revise the exception to Section 2610.5 to read: "Exception: The aggregate area limitations of light-transmitting plastic skylights shall be increased 100 percent beyond the limitations set forth in this section where the building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1." 5. Revise exception 2 to Section 2610.6 to read: "2. In Group R-3 or R-5, multiple skylights located above the same room or space with a combined area not exceeding the limits set forth in Section 2610.4."

Municipal Code of Chicago § 14B-26-2611 Light-transmitting plastic interior signs.

14B-26-2611 Light-transmitting plastic interior signs. The provisions of Section 2611 of IBC are adopted by reference with the following modification: 1. Delete the exception to Section 2611.1.

Municipal Code of Chicago § 14B-26-2612 Plastic composites.

14B-26-2612 Plastic composites. The provisions of Section 2612 of IBC are adopted by reference with the following modification: 1. Delete Section 2612.4.

Municipal Code of Chicago § 14B-26-2613 Fiber-reinforced polymer.

14B-26-2613 Fiber-reinforced polymer. The provisions of Section 2613 of IBC are adopted by reference with the following modification: 1. In provisions adopted by reference, reset the following term in italic type: "approved." 2. Revise Section 2613.5, exception 2.2 by replacing "5 feet (1524 mm)" with "15 feet (4572 mm)." (Amend Coun. J. 10-7-20, p. 21791, Art. II, § 31)
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2667678Fetched: 10/24/2026

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