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12 mil crawl Space Liner
  • 12 mil crawl Space Liner
  • 12 Mil Crawl Space Encapsulation
  • Compare crawl space liner
  • Crawl space insulation liner
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This crawl space liner has anantimicrobial added to the tan layer to enhance the vapor barriers natural ability to resist mold and mildew. The GuardianLiner™ is available in 5 sizes (see below).

This product is subject to a UPS large package handling fee of $9.28 for the first roll of each vapor barrier kind/size.

For more information on this product visit the GuardianLiner™ Product Page


Retail: $337.53
Price: $77.93
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Availability: In Stock
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12MGL-75-36
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Item #: 12MGL-75-36
Availability: In Stock
Ships Next Day or Sooner™

12 Mil GuardianLiner™

Extremely durable, high quality crawl space vapor barrier/liner. This crawl space liner has been a favorite of the professional community since it's introduction.

There are three major components that make this liner an excellent choice for the crawl space environment. First, the white top layer and the tan bottom layer are made from 100% virgin polyethylene resin. This is very important because these layers will last indefinitely. Product performance & longevity are key factors in an investment like this.

The second part is the reinforcement cord in the center. Made from 100% polyester, this 1000 denier cord protect the crawl space liner from tearing.

The third component is the antimicrobial additive. Although virgin polyethylene naturally resists mold and mildew, the antimicrobial additive will give an extra level of protection and piece of mind.

The 12 mil GuardianLiner™ can be directly compared to similar thickness (12 mil) vapor barriers on the market. However, there are some differences:

  • GuardianLiner™ does not have microperfing, tiny holes in the outer layer
  • GuardianLiner™ weighs minimum 64.5 pounds per 1000 sq ft or 64.5 MSF. While competitor's "12 mil" products weigh only 55 MSF, 45 MSF & 38 MSF
  • GuardianLiner™ was engineered for the crawl space environment while most other brands are designed for uses in the oil fields, equipment covers and grain covers.
  • GuardianLiner™ is Made In America

12 Mil = .012 inches

This crawl space vapor barrier/liner comes in the following sizes and ALL ship on an 82" core:

  • 12' wide by 85' long / 1020 sq ft No Welded Seams
  • 12' wide by 50' long / 600 sq ft
  • 6' wide by 85' long / 510 sq ft
  • 46" wide by 85' long / 326 sq ft
  • 36" wide by 85' long / 255 sq ft

The 12 Mil GuardianLiner roll size is approximately 86" for all three roll sizes. We take the wider rolls and fold them in half before rolling them on a thick cardboard core. This 12 Mil product will measures 11.5-12 mil (.0115-.012 inches) at the center of the diamond pattern and approximately 16 mil at the string reinforcement.

Expect that these rolls are heavy and may need two people to carry them. Due to its large size, UPS charges a large package handling fee of $9.28 each to deliver to your door.

Overall Customer Rating of 85 Reviews:
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Dublin, Ohio

Crawlspace encapsulation with 12 mil Guardianliner

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I normally do not write reviews about products or companies, but after using Crawlspace Repair, Inc. for my crawlspace project, I felt it was appropriate to share my very positive experience with their products and service representatives.

I am over 70 yrs of age and have been wanting to encapsulate our crawlspace for several years. It is nearly 1200 square feet for walls and floors. Height is about 60 inches above the gravel floor and my footer is partially exposed so I had to fold the material over the footer curb before folding it onto the floor. I researched many companies products and procedures and even secured quotes between $8K - $4K to have someone perform the work with me removing all the storage items, pallets and wall insulation off my walls. I decided to pay the $50 deposit to have Larry complete a quote and develop a plan for installation. Larry was excellent and he is filled with useful information. He suggested I cut the wall panels to 78" which would provide a 10"-12" floor overlap. This helped speed up the job. I ordered 2 rolls of 12 mil Guardianliner of 600 sq.ft. each, 2 rolls of foundation and seam tape and 100 pins. It was my intentions to install the new material over the existing two layers of heavy plastic that the contractor installed 26 years ago when we built the home. After getting the area clear it was obvious that the plastic and walls around the footer had algae growing. So we decided to remove the old plastic and I worked with Larry to get a roll of the felt liner to cover the gravel and start fresh. Larry was very helpful. It took me about 10 days from start to finish to get things cleaned up, felt installed, wall panels cut and installed and the floor placed and taped. My research of various companies and their products tells me that Crawlspace Repair Inc. is the way to go. They have the best process and products and the staff is very helpful. I would use them again but I hope I never have to do this job again. The Guardianliner product was great. I wanted to use 20 mil on the floor but it did not come in the rolls that I needed. After working with the 12 mil, it was a great choice as I had to fold the material over the footer curb and down onto the floor. While we store pallets on the Guardianliner we usually only go into the crawlspace to retrieve storage items when the seasons and holidays change. So our crawlspace does not get a lot of traffic. With the felt under the Guardianliner, I believe we will excellent service and wear out of the product. I asked for samples of all of Crawlspace products before ordering. I found the 20 mil SilverBack HS product was a good choice but the two samples I received started to delaminate so I decided to go with Guardianliner. In my opinion you cannot go wrong with Guardianliner and Crawlspace Repair Inc. for your crawlspace encapsulation project.


Pleased with this liner

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  • tough
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The 12 Mil Crawl Space Vapor Barrier, GuardianLiner™ is the ideal covering for my dirt floor crawl space. It arrived on time, it is easy to work with and it is both economical and tough and is of better than average construction. I plan on buying more when it is time to finish encapsulating my crawl space.

Outstanding

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Very pleased with the outcome of this project...This is a very superior product and the help I got in picking out the product was very very helpful

Michigan

12 Mil Crawl Space Vapor Barrier, GuardianLiner

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The product was better than anticipated. Very durable. I used the Felt 550™ underneath it. So far very satisfied.

Great Product & Service

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Vapor barrier in the house was put in by the builder with 6 mill black plastic 28yrs ago, it was the usual shoddy job done by the builder, Last year noticed water pooling in the front area of the crawlspace, home is built on a sloping hill from front to back, front side crawlspace about 3 ft back side about 5 1/2 ft. Water was coming in from footer and under the footer, dug a french drain inside the crawlspace along the front wall and a sump pit with pump problem fixed. Decided to encapsulate the entire 1,800 ft crawlspace with 12 mill Guardianliner. This product is amazing extremely strong easy to work with, just measured and cut the pieces on the driveway and installed , used the foundation tape which has a excellent bond, I used foam board on all the walls and adhered with a strong water resistant epoxy. Overlapped 1 to 2 ft and tapped with the waterproof seam tape. The job turned out excellent, now understand I'm 64yrs old and had some great help from my college graduate daughter, but it did take about 5 months to complete, included running additional wiring for lightning and french drain and pump plumbing. however the end results looks like a NASA clean room. Humidity level before project was 75 to 80 percent after completion 45 to 50 percent and this is with a Dehumidifier that was made for a basement, it barely runs because the crawlspace is sealed off however still enough air for furnace to run. This company offers the best products made for the job do it right the 1st time and never worry about it again.