12 Mil Crawl Space Liner | DiamondBack™ SR

The DiamondBack™ 12 Mil crawl space liner is a high performance, American-made vapor barrier designed for durability and crawl space moisture control. Constructed with bi-directional cord reinforcement, this liner offers protection against moisture intrusion into your crawl space, making it an ideal choice for your home. DiamondBack™ is a trusted brand since 2007.

$318.00

(16 customer reviews)

12 Mil Crawl Space Liner | DiamondBack™ SR

The DiamondBack™ 12 Mil crawl space liner is a high performance, American-made vapor barrier designed for durability and crawl space moisture control. Constructed with bi-directional cord reinforcement, this liner offers protection against moisture intrusion into your crawl space, making it an ideal choice for your home. DiamondBack™ is a trusted brand since 2007.

$318.00

(16 customer reviews)

Description

Value and Performance

DiamondBack™ 12 mil crawl space liner is made to handle the harsh crawl space environment with ease. It is made using 100% virgin polyethylene film laminated together with molten polyethylene tie layer. Manufactured in an ISO 9001:2015 certified facility, you can expect a consistent quality that exceeds the demands of your crawl space.

DiamondBack™ is offered in a bright white finish for excellent light reflection helping your crawl space to not only look clean but be clean. We put a UV inhibitor on the white side to protect the barrier from the sun for 18 months. The back side is made black using carbon, which will protect the crawl space liner for much longer and is the best side to install up with open vents that allow sunlight in.

What makes it great

This 12 mil crawl space liner is protected with a 1000 denier polyester, the same cord used in bias ply tires. The reinforcement protects the liner from ripping or tearing and will confine small holes from spreading.

Each roll is 13’4″ wide and is made that width by welding two 6’9″ DiamondBack™ panels together. We fold each 13’4″ roll on a core that is 87″, making the handling much easier. Each roll weights approximately 68 pounds.

Crawl Space Encapsulation® Approved

Not all liners offered on the internet in the 12 mil crawl space vapor barrier class are approved for use in a Crawl Space Encapsulation®. DiamondBack™ has met the strict criteria to provide a Do It Once™ installation. DiamondBack™ meets the following standards-

  1. 100% made with first use virgin polyethylene resin
  2. Actual plastic thickness is over .012″ or 12 mil
  3. Passes Tested Pure™ lab testing standard for odor causing impurities
  4. Each roll sold must have an individual serial number
  5. Meet Class A testing requirements
  6. Less than .01 perms
  7. GS1 UPC tracking number
  8. All rolls have protective wrapper prior to installation
  9. All layers and welds from factory must be bonded with polyethylene- no glues or tapes
  10. 30 year warranty

Additional information

Weight 75 lbs
Dimensions 86 × 7 × 7 in
Roll Size

13'4" x 75'

16 reviews for 12 Mil Crawl Space Liner | DiamondBack™ SR

  1. Joshua Etchison

    This is a thick plastic, really strong. It is easier to start with walls and let the VB cover about 1-2 feet on the ground then lay the ground pieces and tape the seams. Use heavy duty scissors. Plan and cut your pieces and plan on how to unroll to make the install easier. Great stuff!

  2. Ricky Mozingo

    My order came within 2 days! The Diamond Product comes in a roll which was easy to handle and move around. I ordered two rolls of the 1300+ft diamond which was installed over a std 6 mil poly. The product is very tough and looks great inside a crawlspace. My application was on a new home and all the subs were really impressed at how clean plus how strong the application was. Overall, I was very pleased at the product and pricing.

  3. Ronald Grein

    Used the 12 mil product and installed per your video directions. The home inspector was so impressed he wanted know the name of the contractor. The realestate agent called me a week later for another job with the same products.

  4. Andre Allaire

    I have recently purchase a 12 mil crawlspace membrane, the foundation tape, the waterproof seam tape and the pins. I was very impress with the quality of the products, the crawlspace of my chalet is now clean and no more smelling or humidity. As an general contractor this is the kind of product we are looking for, I have decided to offer the product to my own customer, this is definitely way much better that the 6 mil polyethylene that the CNB suggest we install in crawlspace. The membrane is very resistant and will last for years to come. Thanks for an awesome price. André Allaire General Contractor Vita Project inc.

  5. Kenneth Oppenheimer

    I recently purchased your 12 Mil vapor barrier system and Foundation Seal Tape. The project went just as I had expected and the installation was as easy as your videos had shown. You certainly have my endorsement of these products.

  6. Firebird428

    Excellent email updates and products

  7. Ron Jenkins

    Product is tough, durable, but still light enough to handle reasonably in confined space. Installed white side up, reflects light, makes working in crawlspace much more pleasant.

  8. mkainzba

    The vapor barrier was Very strong and the shipping was very fast. Would highly recommend.

  9. Kyle Sluder

    I decided to give a new company a try crawlspace repair was the best hands down. My material was delivered within 3 days of ordering! The material so far has held up great the only down side was my roll of liner was 13′ by 100′ which was great bigger the better in my eyes. But it was folded in half which made it to hard to roll out and un fold in the crawl i did it all out side. Other then that its been the best products I’ve used so far. I do a lot of crawl space work and plan to use this liner every time

  10. Dave

    I am very pleased with the product, purchase and service. You are a great place to do business.

  11. HandySteve

    We have been consistently using this for our customers and can only say positives about it. NO better product out there.
    We live in Hickory, NC region and so many homes only have very thin, poorly laid black plastic (from Lowed or Home Depot) maybe 3mil to 6mil max, and never installed right. Once we install this product, customers are amazed at the change in their environment, stronger floor joist, and energy savings they notice eve,

  12. Joeycavazos

    Works great very strong just make sure your blade or scissors is sharp to cut through this durable vapor barrier

  13. RossB91

    Stuff worked awesome! Had a bit of rocks and concrete under vapor barrier and it actually stretched around it when I crawled over it.

  14. Miller

    Great product for encapsulating crawlspaces and very efficient in shipping the items the next day.

  15. T. THARRINGTON

    Took on a 2400 Square foot encapsulation of my homes crawlspace. Was overwhelming at first but the material quote and outstanding assistance from Larry took majority of the guess work out. Went with 12 mil silverback reinforced poly for the walls and pillars and 20 mil silverback reinforced poly for the floors. 90 pint dehumidifier and pump. Material quote was spot on with just enough material for the job. Entire job took 2 months working at my leisure with the help of my father. Wood moisture readings previous to encapsulation were 18-25% with humidity readings of 80-85% . Wood readings post encapsulation are now as low as 6% some places and cant find a reading over 15% anywhere. Humidity is now steady at 53% with the dehumidifier cycling on and off. Highly recommend fan kit to improve dehumidifier efficiency. This job is not for a first time DIY person but someone with average skills can be successful. I saved about $15,000 by doing this job myself.

  16. Amber

    Not a professional and I was able install the Diamond Back barrier in my 1600 foot crawl space, mostly by myself, after watching a few videos provided by Crawl Space Repair. I’m not saying it was easy, it took me about 2 weeks and it’s not as pretty or perfect as I’d like, but being a 59 year old woman with a few physical limitations I’d say that is a testament to ease of installment. The quality seems very good, but the judge of that will come after a few years. So far I’m happy with the result and I can now store a bunch of stuff under the house.

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