– Crawl Space Vapor Barrier – 10 Mil – Black Vapor Barrier, Thick Plastic Sheeti por | ago 4, 2026Included Components 10 Mil Black Crawl Space Vapor Barrier. Heavy Duty Plastic Sheeting: This plastic sheeting has a thickness of 10 mil and is strong and durable. Thickness 10 Mil 6 Mil 6 Mil 15 Mil 6 Mil 5 Mil 15 Mil.