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// CODE SNIPPET

2603.5.4 Flame Spread and Smoke-Developed Indexes

2015 Michigan Building Code > 26 Plastic > 2603 Foam Plastic Insulation > 2603.5 Exterior Walls of Buildings of Any Height > 2603.5.4 Flame Spread and Smoke-Developed Indexes
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Foam plastic insulation, exterior coatings and facings shall be tested separately in the thickness intended for use, but not to exceed 4 inches (102 mm), and shall each have a flame spread index of 25 or less and a smoke-developed index of 450 or less as determined in accordance with ASTM E84 or UL 723.

Exception: Prefabricated or factory-manufactured panels having minimum 0.020-inch (0.51 mm) aluminum facings and a total thickness of 1/4 inch (6.4 mm) or less are permitted to be tested as an assembly where the foam plastic core is not exposed in the course of construction.

Related Code Sections


2603.5.4 Plastic, Flame Spread and Smoke-Developed Indexes
mm), and shall each have a flame spread index of 25 or less and a smoke-developed index of 450 or less as determined in accordance with ASTM E84 or UL ...
2015 Michigan Building Code > 26 Plastic > 2603 Foam Plastic Insulation > 2603.5 Exterior Walls of Buildings of Any Height > 2603.5.4 Flame Spread and Smoke-Developed Indexes
R302.10 Building Planning, Flame Spread Index and Smoke-Developed Index for Insulation
Flame spread and smoke-developed index for insulation shall be in accordance with Sections R302.10.1 through R302.10.5 ...
2015 Michigan Residential Code > 3 Building Planning > R302 Fire-Resistant Construction > R302.10 Flame Spread Index and Smoke-Developed Index for Insulation
803.1.1 Interior Finishes, Interior Wall and Ceiling Finish Materials
be grouped in the following classes in accordance with their flame spread and smoke-developed indexes . Class A: = Flame spread ...
2015 Michigan Building Code > 8 Interior Finishes > 803 Wall and Ceiling Finishes > 803.1 General > 803.1.1 Interior Wall and Ceiling Finish Materials
R302.10.5 Building Planning, Testing
Tests for critical radiant flux shall be made in accordance with ASTM E970 ...
2015 Michigan Residential Code > 3 Building Planning > R302 Fire-Resistant Construction > R302.10 Flame Spread Index and Smoke-Developed Index for Insulation > R302.10.5 Testing
R302.9.1 Building Planning, Flame Spread Index
Wall and ceiling finishes shall have a flame spread index of not greater than 200. Exception: Flame spread index requirements for finishes ...
2015 Michigan Residential Code > 3 Building Planning > R302 Fire-Resistant Construction > R302.9 Flame Spread Index and Smoke-Developed Index for Wall and Ceiling Finishes > R302.9.1 Flame Spread Index
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