20 Mil Crawl Space Moisture Barrier
  • 20 Mil Crawl Space Moisture Barrier
  • 20 Mil Crawl Space Encapsulation
  • Crawl Space insulation liner
  • 20 Mil Crawl Space Quality Liner
  • Foundation Pins™
  • Foundation Pins™
  • Crawl Space Foundation Pins™ - FP-
  • Foundation Seal Tape™
  • Foundation Seal Tape™ - FST-100
  • Waterproof Pro Seam Tape™  - WST-PRO
  • Waterproof Pro Seam Tape™  - WST-PRO
  • Waterproof Pro Seam Tape™  - WST-PRO
Spotlight!
Sale!

20 mil GuardianLiner™ is an American Made 20 mil crawl space vapor barrier with added anti-microbial for additional peace of mind in suppressing mold and mildew growth. 13'4"x75', 1000 Sq Ft per roll.

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


Retail: $561.00
Price: $478.72
In stock
Availability: In Stock
Ships Next Day or Sooner™
20MGL-75
SIZE:


Update price
Quantity:
Item #: 20MGL-75
Availability: In Stock
Ships Next Day or Sooner™
Item # Description/Size Availability Qty Break Price Quantity
FP-
Plastic fasteners to hold the vapor barrier permanently to the foundation wall
In Stock 1 $22.70 $18.99
FST-100
Super tacky moisture gasket for sealing the vapor barrier to the foundation wall. Does not stick to damp foundations and requires FP-100 to work properly.
In Stock 32+
$24.99
WST-PRO
Made with our proprietary adhesive, this seam tape is waterproof and matches our barriers exactly. The Waterproof Pro Seam Tape™ is the tougher, stronger, and more durable choice for your crawl space encapsulation.
In Stock 12 - 23
24+
$30.99
$30.99

Compare the 20 Mil GuardianLiner™ to CleanSpace™-

Same amount of plastic and same thickness...

Looking for an affordable crawl space liner in the 20 mil class? The GuardianLiner™ is a vapor barrier designed to match up in appearance and performance with the CleanSpace® brand head to head. Although lengths and widths are different the barrier's formula is comparable.

Both product's outer layers are made from 100% virgin polyethylene resin and reinforced with a 1000 denier polyester cord. They even have very similar weights, with the Guardianliner™ made with 85 MSF and CleanSpace® made with 85MSF. MSF= Pounds of plastic per square foot of product.

Although products like these naturally resist mold and mildew growth they both have an added anti-microbial to enhance this characteristic.

If you are looking for an alternative to CleanSpace® brand crawl space liner, look no further than the 20 Mil GuardianLiner™.

The 20 Mil GuardianLiner™ is made right here in America. That means you get consistent quality and appearance.

13'4"x75', 1000 Sq Ft per roll.

Both 20 Mil CleanSpace® and 20 Mil GuardianLiner measure 20 Mil at the top of the thread. If your are looking for a 20 Mil vapor barrier that is measured at the plastic take a look at our actual thickness, 20 Mil SilverBack™.


Overall Customer Rating of 15 Reviews:
review-star review-star review-star review-star review-star

Made in USA

Durability:
review-star review-star review-star review-star review-star
Quality:
review-star review-star review-star review-star review-star
Recommend:
review-star review-star review-star review-star review-star
Pros:
  • STRONG
Cons:
  • None
I have been looking at encapsulating our homes foundation for years. I finally found a great price in SC.with a quality barrier.

Need better shipping cover

Durability:
review-star review-star review-star review-star review-star
Quality:
review-star review-star review-star review-star review-star
Recommend:
review-star review-star review-star review-star review-star
Pros:
Cons:
Very good product, only thing it should be shipped in cardboard had a couple holes in lost 3 feet, from ship other than that good stuff

Durable Vapor Barrier

Durability:
review-star review-star review-star review-star review-star
Quality:
review-star review-star review-star review-star review-star
Recommend:
review-star review-star review-star review-star review-star
Pros:
Cons:
This is a very nice liner that helps create a quality vapor barrier. Will purchase again for the next crawl space encapsulation I sell. Also, product came quick and this company has great customer service.

Excellent product!

Durability:
review-star review-star review-star review-star review-star
Quality:
review-star review-star review-star review-star review-star
Recommend:
review-star review-star review-star review-star review-star
Pros:
  • Professional
Cons:
I'm a contractor in Pagosa Springs CO. I have now encapsulated 3 crawlspaces with Guardian liner and other products from crawlspace repair. I couldn't be happier with the products, the instructional videos, (gave me the ability to do a professional job from the beginning) and the fast efficient service. My only complaint, they sent me a 2x tee shirt, I'm a large. Lol

Hendersonville, TN

Encapsulation project a success

Durability:
review-star review-star review-star review-star review-star
Quality:
review-star review-star review-star review-star review-star
Recommend:
review-star review-star review-star review-star review-star
Pros:
Cons:
My husband and I just completed our crawlspace encapsulation project using the 20ml Guardian Vapor Barrier from this website. It was a grueling job (not recommended for 58 and 60-year-olds) but we got it done. It took several weekends some weeknights, but well worth it. Humidity has already dropped 35%. Our next step is installing air ventilation system then we feel our foundation will be secure. A tip I would offer is to consider coverage of your crawlspace walls when ordering materials. Our house is about 1800 sq feet so I ordered two 1,000 sf rolls, but because of all the wall space and support pillars that needed to be covered I ended up needing to order an additional 1,000 sf roll to finish the project. So glad it's done!