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

However, vapor retarders and barriers are not the same. Vapor retarders, as the name implies, only retard the migration of moisture; whereas, vapor barriers essentially stop the ingress of moisture.

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.