12-mil Crawl Space Vapor Barrier
12-mil Crawl Space Vapor Barrier
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- Solid Layer of 12 Mil
- Made in U.S.A.
- Made From Virgin Material
- Vapor Barrier Measuring Guide
- 12-mil (Actual Thickness)
- Solid, One-Piece Design – Will Not Separate Over Time
- No Odor – No Glues, No Laminates, No Risk
- Size: 1,000 (10ftx100ft) or 500 (10ftx50ft)
- Color: White
- No cat urine odor
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Spec Sheet
Our crawl space vapor barrier material is great for crawl space encapsulation, basement waterproofing and many other projects around the home. With all the hype about reinforced vapor barriers, homeowners should know that reinforced crawl space vapor barrier material may cause odor issues once installed.
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Our 12 mil vapor barrier is a trusted choice for crawl space encapsulation, basement waterproofing, and DIY projects that demand lasting durability. This is a solid sheet, so it’s free of adhesives or internal fibers that can separate or cause odor over time.
While some reinforced barriers are laminated with glues or stitching, this product is engineered as a single, seamless layer of high-quality polyethylene. That means no unexpected separation, no risk of exposed reinforcement cords, and no "cat urine" smell sometimes reported in lower-quality reinforced options.
For homeowners who prefer a more rugged tear-resistant option, we now also offer a woven 12 mil vapor barrier designed for tougher environments where added strength is needed without sacrificing performance.
2 Mil Vapor Barrier – Frequently Asked Questions
Q: What is the 12 Mil Vapor Barrier made of?
A: It’s manufactured in the U.S.A. from high-quality virgin polyethylene. This is a one-piece vapor barrier with no glues, laminates, or reinforcement cords.
Q: Is this vapor barrier really 12 mils thick?
A: Yes. It’s a true 12-mil thickness, measured across the entire sheet not just at raised points or seams.
Q: Will this vapor barrier separate or fall apart over time?
A: No. Since it’s constructed as a single-layer sheet with no adhesives or reinforcement stitching, there’s nothing that can come apart, delaminate, or fray.
Q: Does it smell like cat urine?
A: No. The 12 Mil Vapor Barrier is completely odor-free. It avoids the common issue found in some reinforced products where moisture-reactive glues or fibers cause unpleasant odors.
Q: How durable is it for crawl space use?
A: It’s very durable for standard encapsulation and basement applications. It holds up well to crawl space conditions and traffic during installation.
Q: What sizes are available?
A:
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1,000 sq ft roll (10’ x 100’)
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500 sq ft roll (10’ x 50’)
Q: How does it compare to the woven version?
A: Both offer excellent moisture protection. This version is seamless and smooth, ideal for standard installs. The woven version includes a reinforced core for added tear resistance, better suited for rugged or high-traffic installs.
Product seems to be of high quality, just what I was looking for. Shipping was extremely fast, ordered the product on a Sunday, it was at my doorstep by Wednesday morning, very impressed.
I was surprised at the number of punctures in the material. Repairable with tape, but added time to the job.
Nice product
I've had this vapor barrier installed for over 5 years now. Easily beats any vapor barrier on Amazon for its quality
Really like this Vapor barrier. Comes folded up and on a roll. Was easy to cut outside the crawlspace in the yard to length, re-roll, and then take it into the crawlspace. In the crawlspace getting it to fold out all the way flat was a bit of a chore but not too bad. I felt good knowing I was getting a thick, durable vapor barrier that would not degrade into the cat pee odor.
Product seems to be of high quality, just what I was looking for. Shipping was extremely fast, ordered the product on a Sunday, it was at my doorstep by Wednesday morning, very impressed.
I was surprised at the number of punctures in the material. Repairable with tape, but added time to the job.
Nice product
I've had this vapor barrier installed for over 5 years now. Easily beats any vapor barrier on Amazon for its quality
Really like this Vapor barrier. Comes folded up and on a roll. Was easy to cut outside the crawlspace in the yard to length, re-roll, and then take it into the crawlspace. In the crawlspace getting it to fold out all the way flat was a bit of a chore but not too bad. I felt good knowing I was getting a thick, durable vapor barrier that would not degrade into the cat pee odor.