Vapor Barrier in Crawlspace with thin layer of concrete

Hello,I am in Northern NJ. I have an old crawlspace with about 1/2 in of concrete. (The floor beneath the concrete is soil.) I would like to install a 6… Hello,I am in Northern NJ. I have an old crawlspace with about 1/2 in of concrete. (The floor beneath the concrete is soil.) I would like to install a 6…Read MoreGreenBuildingAdvisor