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// CODE SNIPPET

2603.7 Foam Plastic Insulation Used as Interior Finish or Interior Trim in Plenums

2017 FBC - Building, 6th edition > 26 Plastic > 2603 Foam Plastic Insulation > 2603.7 Foam Plastic Insulation Used as Interior Finish or Interior Trim in Plenums
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Foam plastic insulation used as interior wall or ceiling finish or as interior trim in plenums 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 and shall comply with one or more of Sections 2603.7.1, 2603.7.2 and 2607.3.

2603.7.1 Separation Required

The foam plastic insulation shall be separated from the plenum by a thermal barrier complying with Section 2603.4 and 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 thickness and density intended for use.

2603.7.2 Approval

The foam plastic insulation 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 thickness and density intended for use and shall meet the acceptance criteria of Section 803.1.2 when tested in accordance with NFPA 286. The foam plastic insulation shall be approved based on tests conducted in accordance with Section 2603.9.

2603.7.3 Covering

The foam plastic insulation shall be covered by corrosion-resistant steel having a base metal thickness of not less than 0.0160 inch (0.4 mm) and 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 thickness and density intended for use.

Related Code Sections


2603.7 Plastic, Foam Plastic Insulation Used as Interior Finish or Interior Trim in Plenums
Foam plastic insulation used as interior wall or ceiling finish or as interior trim in plenums shall exhibit a flame spread index of 75 or less ...
2017 FBC - Building, 6th edition > 26 Plastic > 2603 Foam Plastic Insulation > 2603.7 Foam Plastic Insulation Used as Interior Finish or Interior Trim in Plenums
602.2.1.5 Duct Systems, Foam Plastic Insulation
Foam plastic insulation used as interior wall or ceiling finish, or as interior trim, in plenums shall exhibit a flame spread index of 75 or less ...
2014 FBC - Mechanical, 5th edition > 6 Duct Systems > 602 Plenums > 602.2 Construction > 602.2.1 Materials Within Plenums > 602.2.1.5 Foam Plastic Insulation
602.2.1.6 Duct Systems, Foam Plastic Insulation
Foam plastic insulation used in plenums as interior wall or ceiling finish or as interior trim shall exhibit a flame spread index of 75 or less ...
2017 FBC - Mechanical, 6th edition > 6 Duct Systems > 602 Plenums > 602.2 Construction > 602.2.1 Materials Within Plenums > 602.2.1.6 Foam Plastic Insulation
2603.7 Plastic, Foam Plastic Insulation in Plenums as Interior Finish or Interior Trim
Foam plastic insulation in plenums used as interior wall or ceiling finish, or interior trim, shall exhibit a flame spread index of 25 or less ...
2020 FBC - Building, 7th edition > 26 Plastic > 2603 Foam Plastic Insulation > 2603.7 Foam Plastic Insulation in Plenums as Interior Finish or Interior Trim
2603.8 Plastic, Interior Trim in Plenums
Foam plastic insulation used as interior trim in plenums shall comply with the requirements of Section 2603.7 ...
2014 FBC - Building, 5th edition > 26 Plastic > 2603 Foam Plastic Insulation > 2603.8 Interior Trim in Plenums
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