Homeowners often ask if a vapor barrier is necessary for optimizing attic insulation and protecting their homes from moisture ...

Like a traditional basement, dampness from the ground ... Cover the floor and foundation walls with a plastic vapor barrier, and use a dehumidifier to remove remaining moisture from the air.

Related: How to Insulate Your Basement Rim Joists If you ... vapor retarders allow for some level of vapor permeability, whereas plastic vapor barriers are designed to be impermeable.

Homeowners often ask if a vapor barrier is necessary for optimizing attic insulation and protecting their homes from moisture-related damage. The answer, however, isn’t one-size-fits-all.