Zone 3A (mixed humid) – SCSC is still under 2009 IECC, R-30 insulation levelI have a 1.5 story Gambrel roof constructed from trusses with a 2×6 top chord 24″ on… Zone 3A (mixed humid) – SCSC is still under 2009 IECC, R-30 insulation levelI have a 1.5 story Gambrel roof constructed from trusses with a 2×6 top chord 24″ on…Read MoreGreenBuildingAdvisor

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