If your crawl space experiences excess moisture, poor air quality, dust mites, insects, and pests, it is best to install a vapor barrier. Vapor barriers in your crawl space help detur water from the crawl space, making it harder for mold and mildew to grow. Vapor barriers also improve the overall health and appearance of your crawl space by providing better air quality and efficiency. If your crawl space is filled with dirt, chances are, there are unwanted insects and pests inhabiting that space as well. To combat all of the above issues, contact your local crawl space expert for vapor barrier installation.