USA Crawl Space is your one-stop shop to purchase the right crawl space encapsulation supplies, even if you are planning to perform the encapsulation on your own. From vapor barriers to polythene sheeting, we provide high-quality crawl space supplies you'll need to perform DIY crawl space repair & encapsulation. We offer a wide range of barrier thicknesses from 6 mil to 20 mil depending on your particular environment.