Minn. R. 1346.0604 - SECTION 604 INSULATION
IMC section 604.1 is amended to read as follows:
IMC section 604.3 is amended to read as follows:
Exception: Spray polyurethane foam without additional ignition barrier or thermal barrier protection shall be permitted as a duct covering where duct construction in compliance with Table 603.4 is installed in a floor assembly over an unconditioned space in IRC-1, IRC-2, or IRC-3 occupancies, as defined in Minnesota Rules, part 1300. 0070, subpart 12b, provided the spray polyurethane foam meets all of the following requirements:
Statutory Authority: MS s 16B.59; 16B.61; 16B.64; 326B.101; 326B.106; 326B.13
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