Uninsulated Floor deck over exposed earthen crawl space – Climate zone 5

I am planning to install a 6 mil polyethylene vapor barrier as depicted in the detail library of Green Building Advisor.I also want to install rigid insulation to the underside… I am planning to install a 6 mil polyethylene vapor barrier as depicted in the detail library of Green Building Advisor.I also want to install rigid insulation to the underside…Read MoreGreenBuildingAdvisor