Minimum Insulation R-value Requirements

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STATEAPPLICABLE CODEASHRAE ZONEMINIMUM R-VALUESTATE & LOCALALAlabama2015 Alabama Commercial energy Code2R-253R-25STATE & LOCALAKAlaska2012 Alaska building energy Efficiency Standard7R-358R-359R-40LO C A L O N LYAZArizonaNo statewide mandated R values Phoenix - 2012 IECCYuma - 2009 IECC Tucson - 2012 IECCFlagstaff - 2009 IECC2R-202R-202R-205R-20S TAT E O N LYAR ArkansasArkansas Enery code for New building Construction3R-204R-20S TAT E O N LYCACalifornia2016 building energy Efficiency Standards2R-253R-254R-305R-306R-30STATE & LOCALCOColorado2012 IECC4R-255R-256R-307R-35S TAT E O N LYCTConnecticut2016 Connecticut State building Code5R-25STATE & LOCALDEDelawareASHRAE 20104R-20S TAT E O N LYDCDistrict of Columbia2012 IECC4R-25S TAT E O N LYFLFlorida2014 florida building code , energy Conservation1R-202R-20S TAT E O N LYGAGeorgia2011 Georgia State Minimum Standard energy code 2R-203R-204R-20S TAT E O N LYHIHawaii2015 IECC1R-20STATE & LOCALIDIdaho2012 IECC5R-256R-30STATE & LOCALILIllinois2015 IECC4R-305R-30S TAT E O N LYINIndiana2010 Indiana energy conservation Code4R-205R-20STATE & LOCALIAIowaIowa State energy Code5R-256R-30STATE & LOCALKSKansas2006 IECC4R-155R-20S TAT E O N LYKYKentucky2013 Kentucky building Codes4R-25STATE

STATE ONLY FL Florida 2014 Florida Building Code, Energy Conservation 1 R-20 2 R-20 STATE ONLY GA Georgia 2011 Georgia State Minimum Standard Energy Code 2 R-20 3 R-20 4 R-20 STATE ONLY HI Hawaii 2015 IECC 1 R-20 STATE & LOCAL ID Idaho 2012 IECC 5 R-25 6 R-30 STATE & LOCAL IL Illinois 2015 IECC

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