The Highest Quality Crawl Space Vapor Barriers In Stock and Ready to Ship
Americover is a trusted provider of American-made crawl space vapor barriers. Our products are made with high-quality virgin resin, ensuring durability and reliability. Unlike general-use plastic sheeting or Visqueen alternatives, our vapor barriers are specifically designed to resist off-gassing and premature degradation, providing long-lasting protection for your crawl space.
Top Selling Crawl Space Vapor Barriers
Pro Crawl Anti-Mold Vapor Barrier with MPT™️️
Pro Crawl Barrier™ 10 Mil Class 1 Vapor Barrier
20 Mil Dura-Skrim® Reinforced Plastic Sheeting
12 Mil Dura-Skrim® Reinforced Plastic Sheeting
8 Mil Dura-Skrim® Reinforced Plastic Sheeting
The Pro Crawl Anti-Mold Vapor Barrier is a Class 1 vapor barrier designed for superior performance. With a perm rating of just 0.022 perms, it outperforms the leading competitor’s 10-mil vapor barrier in blocking vapor transmission. This advanced barrier also features state-of-the-art mold prevention technology, offering an extra defense against mold growth. Protecting your crawl space helps extend the lifespan of building materials and enhances indoor air quality.
The Pro Crawl Barrier is a durable 10-mil Class 1 Vapor Barrier with a sleek, high-gloss white finish. It is designed for superior performance and offers low permeability and exceptional tensile strength, effectively protecting your building materials from moisture vapor damage. While traditionally available in a 10′ x 100′ roll, it now comes in a new, versatile 5′ x 100′ roll size, making it ideal for 4′ crawl space walls. This smaller size helps minimize material waste and reduces labor constraints during installation in smaller spaces.
The 20 Mil Dura-Skrim® White Reinforced Plastic Sheeting is a premium, heavy-duty material ideal for various construction applications. Engineered for exceptional durability and superior tear resistance, it’s perfect for demanding uses such as covering debris-laden ground or areas subjected to high foot traffic. The reinforced design ensures long-term reliability, even in challenging environments, making it a trusted solution for protecting surfaces and structures.
The 12 Mil White/Black Dura-Skrim® Reinforced Plastic Sheeting is a strong choice for crawl space encapsulation. It combines durability with flexibility, offering a resilient option for moisture protection. The white side helps reflect light, which can be beneficial for illuminating dark crawl spaces. This product is often preferred for its balance between strength and flexibility compared to heavier-duty options like the 20 mil version, making it easier to work with during installation.
The 8 Mil White/Black Dura-Skrim® Reinforced Plastic Sheeting is a lightweight, highly flexible film ideal for crawl space encapsulation. With its reduced thickness, this version offers easier handling and installation, especially in tight or confined spaces. While it provides excellent moisture protection and maintains good durability, the 8 mil version offers more flexibility than thicker options, making it a great choice when ease of use and cost savings are a priority.
Trust Americover with your next crawl space vapor barrier purchase.
Quality Vapor Barriers
Multi-layered, extrusion laminated & reinforced
Tear resistance for increased service life
Meet or exceed ASTM specifications
Low permeance barrier (<0.03)
Class A permeance rating
Better Results
Prevents unpleasant odors
Eliminates moisture damage
Improves indoor air quality
Prevents of structural damage
Reduces pest infestations
How Do You Measure a Crawl Space for a Vapor Barrier?
To measure your crawl space for a vapor barrier you will need to take the following measurements:
• Length of crawl space
• Width of crawl space
• Height of the foundation walls, or as high up on the walls you are going to encapsulate
• Perimeter Length of the entire space (length + width) multiplied by 2
Since most crawl spaces are less than 4′ tall, using a 4′ or 6′-wide vapor barrier for the walls will keep the seams to a minimum.
Watch a tutorial about how to calculate the square footage of your crawlspace.
Which Mil Thickness is Right for Your Crawl Space Vapor Barrier?
The video to the left will help you understand which mil thickness is best for your crawl space. A 6 mil vapor barrier is the minimum thickness recommended for encapsulation, but we advise you to take into consideration the following conditions:
- Ground conditions
- Traffic frequency
- Radon presence
- Geographical location
Shop By Mil Thickness
Radon Mitigation
What is Radon Mitigation System?
A radon mitigation system is any system or steps designed to reduce radon concentrations in the indoor air of a building. The EPA recommends that you take action to reduce your home’s indoor radon levels if your radon test result is 148 Becquerels per meter cubed (148 Bq/㎥) or 4 picocuries per liter (4 pCi/L) or higher.
Radon mitigation with the help of crawl space vapor barriers is a crucial aspect of regulatory compliance and safety. It can reduce the flow of soil gas using a vapor barrier with a “soil gas retardant” membrane.
Crawl Space Vapor Barrier Accessories
Vapor Tape
White Vapor Tape is a heavy duty, weather resistant tape often used to seam large panels of poly sheeting together for vapor retarders, crawl space liners, covers and other liner applications. This tape is sold in individual rolls of 4″ x 180′.
2-Sided Butyl Tape
Double sided butyl tape is an insoluble tape with an aggressive adhesive that bonds plastic sheeting to porous surfaces such as concrete in crawl spaces. The waterproof bond adheres best when the application surface is clean and dry.
Ratchet Fasteners
Christmas Tree Ratchet Fasteners are made of heavy duty nylon with a 1/4″ diameter, flat white head and conical tip. Ratchet fasteners are used to attach vapor barriers to the foundation wall & are available in packs of 100 pieces or 500 pieces.
Have more questions about crawl space encapsulation vapor barrier products or projects? Give us a call at 760-237-8786 to speak with one of our representatives. Monday-Friday 6am-6:30pm PST.
Why Americover?
Get your product when and where you need them
Contractors fight enough delays between weather, equipment failures, labor shortages, and subcontractor delays. The last thing you need is essential products like vapor barriers failing to arrive on time.
For over 25 years, Americover has built a proud reputation by getting contractors what they need when they need it. From the point that you first consider our products, we offer you a long-lasting and comprehensive partnership.
Contractors and Builders Talk About Americover
When you partner with Americover, you benefit from our industry and product application knowledge.
But don’t take it from us. Take it from those in the building industry who have relied on our quality and reliability over the years.
Check out our online selection of specialty plastic building solutions. Contractors and distributors are eligible for special pricing and volume-based discounts on select products, call us at 760-237-8786. Our online inventory is just our retail selection, which means we can often source items you may not see here.
Crawl Space Resources
Americover’s Product Catalog
Browse our full inventory of vapor barrier and crawl space encapsulation liner products.
Conversion Calculators for Easy Measurements
We’re doing the math for you! Get started with our easy-to-use conversion calculators.
Crawl Space Product Line Card
Compare the technical specifications of each product to find the perfect crawl space vapor barrier for every job.
Crawl Space Product Accessories Line Card
Find the accessories are essential for crawl space encapsulation.
How to Install a Crawl Space Vapor Barrier
Americover’s crawl space vapor barriers and liners are manufactured in America with virgin resins and uv inhibitors, if installed properly it should last up to 20 years or more. Purchasing at your local hardware store may be less expensive and more convenient, but it is likely to be compounded mostly of recycled resins containing a lot of debris and contamination which can cause off gassing, as well as shorten the lifespan of the liner causing it to degrade much faster, and requiring it to be replaced much sooner than anticipated. For more information on Virgin poly vs Regrind visit our Blog.
1. Cut the Vapor Barrier to size. The vapor barrier liner comes folded and rolled on a core. It is easier to cut and size the liner material before you take it into the crawlspace. After the material is cut to size roll it up (white side on the inside) so when you unroll it in your crawlspace it stays clean.
a. To cut the Floor Pieces, measure and cut a piece of vapor barrier liner material wide enough to cover the floor from the wall to the 1st line of piers or support then proceed to measure and cut the remaining floor pieces.
i. IMPORTANT: Don’t forget to measure enough material to seal an overlap of 6-12 inches on the wall pieces and pieces beside it.
b. For the Wall, keep the seams to a minimum by using a 4 ft or 6ft wide vapor barrier, since most crawlspaces are less than 4′ tall.
2. Start with the walls. To attach the liner, apply the 2 sided butyl tape 4 inches – 6 inches down from the top of the wall or sill plate. (This is to leave a space for pest inspection). *Do not remove the release liner on the exposed side of the tape until you are ready to attach the liner. (It may be easier to first apply the butyl tape to the vapor barrier, and remove the release liner as you are applying it to the wall.) otherwise, remove the release paper from the butyl tape in about 4 feet – 6 feet increments.
3. Fasten the Liner with some type of permanent fastener every 24 – 30 inches. The fasteners should go through both the material and the butyl tape. This can be accomplished by one of the following methods:
a. Use a Hilti
b. Use a Ramset Powder Fastener
c. Drill a 5/16″ hole and press in our Christmas Tree Ratchet Fasteners
4. Installing Vapor Barrier on the Floor. Starting at the piers or support posts, cut and notch the vapor barrier on both sides of the support about 6-12 inches above the ground. Wrap the vapor barrier to fit tightly around the support, and use the 4 inch white Vapor Tape to seal the material.
5. Smooth the liner out from the supports to the wall and tape the seams with the 4″ White Vapor Tape.
a. Overlap the Seams 6 inches to 12 inches.
b. You may remove your footwear or use disposable shoe covers to keep the vapor barrier liner clean.
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For Contractors and Distributors, we offer special pricing, volume discounts, short lead times and a dedicated account manager who will work with you to get exactly what you need. If you would like to speak with a representative, contact us at 760-237-8786.