Cover the floor and foundation walls with a plastic vapor barrier, and use a dehumidifier to remove remaining moisture from the air. All of these steps work together to control moisture levels.

He says, ‘For homes in humid climates, a vapor barrier can prevent these headaches by maintaining a consistent moisture level under the house or within the walls. It also protects the insulation ...

Lastly, a study on a historic Italian Palazzo examined the hygrothermal performance of walls retrofitted with internal insulation without a vapor barrier. The results showed no significant risk of ...