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WhiteCap crawl space vapor barriers have become a household name with contractors across North America. The WhiteCap Standard series of reinforced liners is what built that reputation. WhiteCap Standard comes in 12 mil and 20 mil thickness with a variety of different sized rolls to fit any job. WhiteCap Standard series heavy duty plastic sheeting gives you incredible value at some of the industry’s most competitive pricing. WhiteCap Standard is a high-strength polyethylene liner, and is cord reinforced for increased durability. The visible side of the liner is bright white in color and creates a bright, clean, seamless look when finished.

Learn more about the WhiteCap Crawl Space System and the benefits of becoming a certified installer at

Heavy Duty Reinforced WhiteCap Standard Vapor Barrier

20 mil standard

WhiteCap Standard 20 mil Vapor Barrier

White on the visible side and blue on the back side, WhiteCap Standard 20 mil is perfect for the toughest crawl space jobs.

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12 mil standard

WhiteCap Standard 12 mil Vapor Barrier

White on the visible side and green on the back side, WhiteCap Standard 12 mil is a great quality and durable liner ideal for any encapsulation job.

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Customer Reviews

Average rating for Nash Distribution is 4.98 stars of 5 stars - based on 30 reviews

I use the 20 mil vapor barrier from Nash on my crawl space projects. The product is heavy duty and the service from ordering through shipping is unbeatable!!!

Eric G. - Integrity Plus Insulation - Prentice, WI 54556
Swainco Crawl Space and Basement Repair, from the Indianapolis Indiana area, has increased over 300% in the last 10 months. Nash has helped make that possible with their excellent crawl space products and customer service. They truly understand that there success comes from going the extra mile to ...
Ken S. - Greenwood, IN 46143