What Does a Vapor Barrier Do? A vapor barrier is designed to limit the movement of water vapor from one area of your home to ...

The barrier typically comes in the form of sheets of plastic or foil-backed fiberglass insulation and is used during insulation installation to block vapor transmission. In many cases, vapor ...

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.