20 Mil Crawl Space Moisture Barrier
  • 20 Mil Crawl Space Moisture Barrier
  • Crawl Space Vapor Barrier
  • 20 Mil Crawl Space Encapsulation
  • 20 Mil Crawl Space Liner
  • 20 Mil Crawl Space Plastic
  • Crawl Space Insulation
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The SilverBack™ is an actual thickness crawl space vapor barrier that is roughly 30% thicker than other "20 mil" products. This is the premium quality 20 Mil SilverBack™ crawl space vapor barrier for crawl space encapsulation.

This price includes SHIPPING!


Retail: $337.00
Price: $309.25
$309.25

Includes Shipping for DIY

    Availability: In Stock
    Ships Next Day or Sooner™
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    20 Mil Reinforced Vapor Barrier for Crawl Space Encapsulation

    The 20 Mil SilverBack™ is made from 100% virgin polyethylene resin and reinforced with a 1000 denier polyester cord. This crawl space vapor barrier is idea for use on the crawl space floor because it is an actual 20 mil. We say it is an actual 20 mil because it is measured at the plastic and not across the raised reinforcement threads like other brands are. This makes the SilverBack™ 20 Mil 30% thicker than the competitors 20 mil.

    Comparing product weights the 20 Mil SilverBack™ comes in at 110 pounds per 1000 square feet of product or 110 MSF while the closest competitor's 20 Mil is only 83 MSF and another 74 MSF.

    The SilverBack™ brand is Made in America and does not contain any additives. There is no odor or off-gassing with this crawl space floor liner.

    Apperance

    The SilverBack™ is easly identified by it's bright white face and silver colored back.

    The 20 Mil SilverBack™ is available in 3 roll sizes:

    • 6'7.5"x100' (675 sq ft)
    • 13'4"x50' (675 sq ft)
    • 13'4"x90' (1200 sq ft)

    Use

    20 Mil SilverBack™ is thick enough and strong enough to allow for medium to heavy storage, heavily traveled areas and to cover stone/concrete floors. We still recommend the use of the Felt550™ if the floor has objects that are sharp and can not be removed.
    Use the 20 Mil SilverBack™ on the floor and the 12 Mil SilverBack™ on the walls to keep the costs inside the budget.
    20 Mil= .020 inches

    Overall Customer Rating of 57 Reviews:
    4.93
    Colorado

    DIY Crawlspace Material Review

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    I used the 20 mil silver back vapor barrier and 4" tape in my crawl space. Both materials are first rate, and well worth the price paid. While working in a crawl space is not my favorite thing to do, I would not hesitate to use these materials from this company if I do get into another crawl space job. The materials were shipped - on all three of my orders - either the same day I placed the order or the very next day. Good material, great folks to deal with - whats not to like?

    20 mil Skrim

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    Product was just as advertised. Received in just a few days and was a breeze to install.

    Easy to handle

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    The large roll, 13.5' x 90', of silver back was easy to get into the house, cut and maneuver in the crawlspace. Easy enough for a DIYer.

    Smyrna Delaware

    if mother nature is just to moist for your joist.. then 20mil will fit the bill!

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    moved into a home that has a crawlspace that sat for about a year in the humid east coast summer heat. then some into the fall. layed down the 20mil vapor barrier ..immediately the next day after 90-95% of the earth under was covered , not even done taping and still some small spots exposed.. the foundation had begun to dry. even parts of the house were joist had significant and visible moisture it quickly started to dry. Havent used my moisture meter on the sub flooring yet( which is visible due to putting down new hardwood) but according to my thermometer which has a RH reading. it went from anywhere from 55-70 % ( before vapor barrier) to right around 45-35 % ( after installation of vapor barrier) . The Vapor barrier feels and looks like true 20mil. I have yet to see a better product around. Highly recommend to anyone looking to encapsulate or just have some added protection from moisture in there crawlspace. !

    Chattanooga TN

    Sec Tres

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    • excellent customer service
    • excellent product
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    • none that we have found
    After reviewing many products on-line and even purchasing one other I recommended this product to our owner.

    Thrilled at the turn around time of the order and the quality of this product. It is much better that the first one we tried

    The support your website offers has made it easy to train our men on how to install.

    I would recommend this product to any DIY or company

    Thank you

    Joan

    silverback vapor barrier

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    <p>Rolls are not the size stated. They wouldn't send more to make up the difference. I had to buy a different product from another supplier to finish the job. Very unreliable company.

    </p><p>Comment from CrawlSpaceRepair.com- Tim miscaluclated his vapor barrier needs and when he found out we do not sell partial rolls and we were not willing to open a new roll and cut him a 15' piece he posted this review. It is unfortunate that we could not meet his expectations. </p>

    Winston, nc

    Vapor barrier

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    • Quality
    • %20price
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    Great product, easy to use and install, very knowledgeable and helpful staff.

    Tennessee

    Good stuff

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    Works well

    northern MN

    review of 20 Mil vapor barrier

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    Works great - our crawl space is now very clean and neat, and the "chemical" odor that we had in the cabin seems a lot better. Much easier to put down than the 8 mil poly that we laid it over. Worth the price.

    West Virginia

    Excellent experience

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    After thorough research and 2 experts advise, this plastic was perfect for our small crawlspace. The 2 companies that we consulted tried to scare us away from DIY saying it'll smell like cat urine. Your website helped explain all those scenarios and they did not apply to us. It was one of our easiest DIY projects ever. The only issue was that we only used half a roll!

    KC area

    Superior product

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    Out of all of the products we have researched, this is the best option for stone foundations we have found, as well as the most cost effective. Easy to work with. There has been a noticeable difference in the air quality since it has been installed and we are only half finished! It has eliminated nearly all of the musty, basement odor. In the past, we have tried ionizers (which only masked the smell), and de-humidifiers, which helped but could not entirely remedy the situation.

    Bath, Michigam

    20 mil encapsulation

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    This company has some of the best products and great service. The 20 mil encapsulation material, seam tape, and foundation seal were better than I expected. The foundation pins were a little flimsy. Our crawlspace looks like it was done professionally and we did it ourselves with your great products. Keep up the great work.

    Naples, ME

    Very pleased!

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    This stuff was easy to use and virtually indestructible. High quality product. Would highly recommend it.

    Georgia

    Clean, Bright, and Beautiful

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    The 675 Sq Ft rolls of 20 Mil SilverBack™ vapor barrier were quite heavy. This speaks for the true quality of the material. I have prior experience with a competitor's crawl space liner that was advertised as a 90 mil liner, which weighed less than half as much as the 20 Mil SilverBack™ from CrawlSpace Repair. I am very happy with the customer service and the quality of the materials I bought from CrawlSpace Repair. My mother's crawl space is now clean, bright, and beautiful.

    Tennessee

    One Happy, Satisfied Customer

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    Larry really simplified a job that I thought was going to be a nightmare. At his suggestion, I encapsulated my crawl space with the 20 Mil SilverBack™ and added an AprilAire dehumidifier. Now I am one happy, satisfied customer because there is no more water running off ducting and I finally have a crawl space that is dry.

    Ontario, Canada

    2 Thumbs Up

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    It has been a year now since I installed your SilverBack™ liners and I'm still impressed with it. The basement is much dryer and a lot warmer, through last winter. This spring, which is when I used to have water laying on the dirt basement floor, there was no water. And no water showed up in any other part of the basement. 2 large thumbs up.

    WESTLAND MI

    MR.

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    VERY COST EFFECTIVE. REQUIRES TWO PERSONS TO INSTALL.

    Raleigh NC

    Great Product

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    I used 1 roll of the 12 mil and larger roll of the 20mil. Both are fantastic. I had old clear 6 mil, which I went right over. Once I had the entire floor covered, even before taping the seams, I could feel and smell the difference in moisture reduction. I followed all of the videos and written process.

    Elk Park, NC

    Excellent Liner!

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    I am very happy with this liner! At first I was worried because I could only get it 13.5 feet wide, but as it turns out, most of the supports under the house were about 12 feet apart, so it worked out great. It was cold where we installed the liner, and this stuff is really stiff when it gets cold, so we stored the role indoors so it would warm up. This helped a great deal. Also, unroll just the amount you need, then pre-fold it where your walls are, then roll it up again to get it under the house. This way it unrolls under the house and you don't have to manipulate it a bunch. Very good product. Highly recommended...

    Andrews, SC

    Quality Product

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    I had local company to install a light weigh crawlspace plastic vapor barrier, it was never taped. After a few trips under the house the crawlspace was a mess. I replaced the old vapor barrier with this 20 Mil Vapor Barrier and associated accessories. What a difference in quality and the appearance of my crawlspace. This crawlspace barrier will not have to be replaced for years. I did my research and if you want a high quality product to protect your crawlspace I highly recommend this product and this company.

    Asheville, NC

    Durable but shipping damage

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    This seems to be a good, durable vapor barrier. Unfortunately, there were some holes in it from the shipper. I patched them with the seam tape, but it's unfortunate that there isn't a safer way to ship this stuff.

    Tennessee

    Top Shelf Products

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    After much research, I finally took the plunge and ordered enough product to do a 1700 sq ft crawl space. When the pallet arrived, I was pleased at how well it was packaged for shipment. Lots of care to prevent damage during shipping. The quality of the 20 Mil vapor barrier far exceeded what I was expecting. Everything I ordered was top quality. I could not be more pleased with the outcome.

    Polan Spring Maine

    Home owner

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    Outstanding product, and customer service and it's made right here in the USA love it. Received the product in 2days with no shipping charge. Bought this product as a vapor barrier in my shelter logic outdoor shelter. It worked great at keeping the moisture from coming up from the ground. Very happy with the product quality. Would not hesitate to do business with Crawl Space Repair again in the future. Robert in customer service was very helpful. Thanks again, Paul.

    Green Bay, WI

    Awesome Product

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    I installed the 39 6 months ago and am extremely happy with it. The odor and humidity is gone. The crawl space is clean, bright and dry. This is an excellent product and I wholeheartedly recommend it.

    Montréal, Qc, Canada

    Heavy, very good product

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    Not cheap, but very good product. You get what you pay for and one proof of that, is that it is quite heavy to work with, especially for big pieces in tight places.

    Colorado

    Excellent, excellent product

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    I cannot recommend this product enough. We installed it in our crawl space after the Colorado floods in 2013. After installing it, our crawl space has been warm and dry and we have had no mold issues. I was hesitant to use the foundation pins, but the person we talked to said we really needed them, and he was right. We were able to rent a "pin gun" from our local hardware store and the combo of the pins plus the caulking has held up extremely well. In this day and age of bad customer service and poor quality products that look good but don't deliver, it is nice to find a product that does what it says it will and exceeds your expectations. Highly recommend.

    Georgia

    Best Quality and Service

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    I absolutely love the vapor barrier plastic. I have done a lot of research about vapor barrier plastics before I made my purchase and your product is everything you advertised. The 20 Mil SilverBack™ is the strongest plastic, even the handyman that I hired to install it said it was the best quality he had ever installed. He asked me for your address and said he would recommend this product to all his clients. Also, my order was filled very quickly and arrived in just a few days after I placed my order. Thank you! Great product and service!

    North Georgia

    Very happy with product and support.

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    With rock hard chunks of clay and sharp pieces of concrete debris all around, anything less then 20mil would have been a disaster. If I had to do this job again, I would have gotten 2 six foot wide rolls rather then the 13 foot wide roll. The 13 foot width was very difficult for my brother and me to manage when your on your knees and belly.

    Beverly Hills MI

    Home Owner

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    I purchased the 20 Mil liner for my new construction crawl space and had it installed and then sealed to the walls by a reputable spray foam company. They and I are were impressed with the product. The crawl space has extremely low humidity since installation. The liner seems very durable. I am happy with the choice.

    Fort McMurray, Alberta

    Easy to use, excellent quality

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    Wow, how happy am I that I purchased this product. Our basement now smells good, dry, and clean. Love how the white makes everything look clean.

    North Carolina

    Tough

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    Easy to work with. Feels even better over 42 liner. Cleans up well.

    Virginia

    Excellent Materials and Advice

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    The items in this order were superb and did just what was needed as did all of the CrawlSpace materials. The encapsulation went well because the materials are excellent and the advice/directions were on target and very helpful. Also, the success was due to the staff at CrawlSpace Repair, their excellent advice, and the printed directions. I am a very pleased customer with the materials and service.

    Nantucket, MA

    Quality product

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    I wanted to install a high quality liner in my crawlspace that would not need to be replaced for many many years, if ever. The Silverback 20 mil liner was the perfect fit. When I had a couple installation questions the customer service was excellent. If you want a high quality product to protect your crawlspace I highly recommend this product.

    portland

    incapsulating the cral space

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    great sturdy strong product, fast to delivery highly recomanded

    Nebraska

    Great Stuff

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    This plastic is the highest of quality . I used the twenty mil with 42 and it has made a world of difference. I highly recommend this product and company.

    Colorado

    Easy to Use

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    Products are fantastic and easy to use. My crawl space looks fantastic and clean. All the moisture from the Colorado flood that made its way upstairs is all calming down.

    El Paso, IL

    Excellent, tough product

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    My son and I installed the 20MIL Silver Back vapor barrier in our 11x22 dirt floor crawlspace. The product is excellent and I couldn't be happier. The 20MIL liner is nice and thick and tough, so Rubbermaid tubs and boxes we store in the crawlspace scoot cross the liner with no problems and no chance of tearing the liner. I couldn't believe how fast it came! I ordered it online, the next day it was here! Would highly recommend it to anyone considering lining their crawlspace.

    IOWA

    Good - Stuff

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    I installed this 20 mil SilverBack in a 24x26 crawl space. The results were great. You can't go wrong with this product. I expect it to last for many years. Buy it.

    Colorado

    Fantastic and Easy to Use

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    I used the 20 Mil and 12 Mil SilverBack™ crawl space vapor barrier this weekend and the product is fantastic, easy to use, and arrived incredibly fast and undamaged. The Waterproof Seam Tape was also something I was glad I purchased. Thanks for making a great product!

    West Virginia

    Great Product

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    The 20 mil vapor barrier was great, easy to work with and my customer was well pleased. I will use again because it exceeded my expectations in every way.

    Washington

    Exceeded Expectations

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    After spending 3 years researching for a quality crawl space vapor barrier for my cabin - I went with your 20 mil vapor barrier. The sales staff were very helpful, reviewing the products required, and giving installation advice. The installation went great and I could not be more pleased with the products. Bright white, no off gassing, no more musty smell from the crawl space. The product exceeded my expectations (and that almost never happens for me).

    Maine

    Very Satisfied

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    Our contractor has completed installation of the vapor barrier in our crawl space.....he was very satisfied with the components we purchased from you. Your membrane was clearly superior to materials available locally.

    Ohio

    Builder/Contractor

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    Well, I bought it twice in a row. What does that tell ya? Good stuff. Good performance.

    Pickerington, OH

    Nice Quality

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    The Silverback vapor barrier seems to be very durable and easy to work with. I did a lot of leveling of the gravel in my crawlspace which made everything relatively square. I can see how an irregular surface may lead to a more difficult installation.

    Virginia

    High Quality

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    The materials were of high quality and worked as advertised. I used the 20 mil SilverBack over 5100 42.

    Virginia

    High Quality

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    The materials were of high quality and worked as advertised. I used the 20 mil SilverBack over 5100 42.

    Virginia

    High Quality

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    The materials were of high quality and worked as advertised. I used the 20 mil SilverBack over 5100 42.

    Illinois

    Homeowner

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    The vapor barrier products including the liners, foundation pins, foundation tape and seam tape were all of the highest quality, easy to install. I did this as one man job, probably 6 hours total for a 900 sq ft crawlspace

    NC

    Great Products and Service

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    I was greatly impressed with the quality of the materials. The vapor barrier, both the 12 mil and 20 mil material, was extremely tough and have proven to be very effective in the short time it has been down. It almost would take a deliberate act to perforate the 20 vapor barrier which I used in the area that receives the most traffic.

    Moorestown, NJ

    Highly Recommend Crawl Space Concepts

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    Got a quote from a company to install this system for me for $6,700! I went to Crawl Space Concepts after researching several vapor barrier products and ordered everything I needed for $1,200 including shipping. Installed the entire system in my crawl space in 2 days. The products were all exactly as described, high quality, easy to use, and relatively inexpensive. I am VERY pleased with the final results and thanks to Crawl Space Concepts, I saved $5,500!!

    NJ

    I am glade I was able to find you on line.

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    The 20 mil silver back plastic vapor barrier was great. The quality of plastic was very high with no odor and extremely easy to work with. I was also very pleased with the sales staff. They are very knowledgeable and extremely helpful. Thanks again for the great service and material

    North Alabama

    Incredibly heavy duty!

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    This is an extremely heavy duty product. I got it to put on some particularly heavy traffic sections of my crawlspace floor; elsewhere (floor and walls) the 12-mil product is more than adequate. The only two to consider are the 12-mil and 20-mil DrySpace.

    Timnath, CO

    Easy to install, high quality

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    Definitely recommend the product! Solved the house odor issues immediately. Worth every penny. The sketches provided by Larry were exactly what we needed to do the job right the first time without any "redos". Very happy with the product!

    IN

    Like working with this products.

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    20 mil is a good strong durable product

    Maryland

    Good Quality American Made Product

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    This is a great creation and is a very high quality material. I am very pleased to have used this product. It worked wonderful.

    ME

    Worked as described

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    Everything I purchased was as described and worked as described.

    VA

    Wonderful Product

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    I used this product on my walls and am very pleased with the product. I referred this product to friends.