floor insulation choices in pre-fab shed

12 X 32 prefabbed shed in Western Maine, Zone 5.  I believe.  Shed is a plywood subfloor on a joist system;  held off the ground by CMU’s to level it. … 12 X 32 prefabbed shed in Western Maine, Zone 5.  I believe.  Shed is a plywood subfloor on a joist system;  held off the ground by CMU’s to level it. …Read MoreGreenBuildingAdvisor