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.

Installing a vapor barrier is one of the most effective ways ... and seal seams with waterproof tape. You may want to use a couple of bricks of boards just to keep any air vents from disrupting ...

Moisture is something to be managed. A vapor barrier can cut down on earthy smells, mildew, and general humidity.

says the term “vapor barrier” has been in use for many years to help differentiate between products’ abilities to impede water diffusion, known as their permeance levels or ratings.