Although you can have legitimate concerns about the costs involved, covering your ... this with a vapor barrier, the type used to prepare slabs. Although the next step — insulation — is ...
Then, a few weeks later, they put foam insulation on the walls of the basement and in part of the attic, and installed the vapor barrier. A new vapor barrier protects Graves's home from moisture.
While more insulation generally improves energy efficiency, it’s possible to overdo it. Adding excessive layers can compress the vapor barrier or block the ridge vents which can trap water vapor ...