Minimum Insulation R-value Requirements

STATEAPPLICABLE CODEASHRAE ZONEMINIMUM R-VALUESTATE & LOCALALA labama2015 Alabama Commercial Energy Code2R-253R-25 STATE & LOCALAKA laska2012 Alaska Building Energy Efficiency Standard7R-358R-359R-40LO C A L O N LYAZA rizonaNo statewide mandated R values Phoenix - 2012 IECCYuma - 2009 IECC Tucson - 2012 IECCF lagstaff - 2009 IECC2R-202R-202R-205R-20S TAT E O N LYAR ArkansasArkansas Enery Code for New Building Construction3R-204R-20S TAT E O N LYCAC alifornia2016 Building Energy Efficiency Standards2R-253R-254R-305R-306R-30 STATE & LOCALCOC olorado2012 IECC4R-255R-256R-307R-35S TAT E O N LYCTC onnecticut2016 Connecticut State Building Code5R-25 STATE & LOCALDED elawareASHRAE 20104R-20S TAT E O N LYDCD istrict of Columbia2012 IECC4R-25S TAT E O N LYFLF lorida2014 Florida Building Code, Energy Conservation1R-202R-20S TAT E O N LYGAG eorgia2011 Georgia State Minimum Standard Energy Code 2R-203R-204R-20S TAT E O N LYHIH awaii2015 IECC1R-20 STATE & LOCALIDI daho2012 IECC5R-256R-30 STATE & LOCALILI llinois2015 IECC4R-305R-30S TAT E O N LYINI ndiana2010 Indiana Energy Conservation Code4R-205R-20 STATE & LOCALIAIowaIowa State Energy Code5R-256R-30 STATE & LOCALKSK ansas2006 IECC4R-155R-20S TAT E O N LYKYK entucky2013 Kentucky Building Codes4R-25 STATE & LOCALLAL ouisiana2009 IECC2R-203R-20S TAT E O N LYMEM aine2006 IECC6R-207R-25S TAT E O N LYMDM arylandMaryland Building Performance

TX Texas 2015 IECC 2 R-25 3 R-25 4 R-30 STATE ONLY UT Utah 2015 IECC 3 R-25 5 R-30 6 R-30 STATE ONLY VT Vermont 2015 Vermont Commercial Building Energy Standard 6 R-30 STATE ONLY VA Virginia 2014 Virginia Building Code 4 R-25 STATE ONLY WA Washington 2015 Washington State Energy Code 4 R-30 5 R-30 6 R-30 STATE ONLY WV West Virginia …

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