Shipping Included Details

For states East of the Mississippi River- DIY orders over $200 will included shipping. UPS has added handling charges for rolls of vapor barrier due to their size and weight. There will be a $9.28 UPS handling charge for each roll of vapor barrier.

For states West of the Mississippi River, Alaska, Hawaii and Canada- DIY orders over $200 will receive a 10% discount, however you will be responsible for paying the shipping. In most cases the 10% discount will cover most of the shipping. The $9.28 UPS handling charge is included in your shipping costs.

If you are placing an order from one of these areas please call our office 864.223.7800 if you have any questions.

13' 4" x 75' / 1000 Sq Ft
13' 4" x 75' / 1000 Sq Ft

20 Mil Vapor Barrier, GuardianLiner™

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Price: $495.00
20 Mil Vapor Barrier for Crawl Space Encapsulation, GuardianLiner™
Part Number: 20MGL-75


American Made
20 Mil thickness (nominal) 85 MSF
100% Virgin Resin
White Face Cream colored back

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Compare this product to CleanSpace™-
Same amount of plastic and same thickness...

The Top-
The top layer of the 20 Mil GuardianLiner™ is bright white and give the crawl space a neat and clean look once installed. This layer is made from 100% virgin polyethylene resin and contains no additional additives or fillers.

The Middle-
The center of the 20 Mil GuardianLiner™ is a polyester reinforcement cord that eliminates the crawl space vapor barrier from ever tearing. The reinforcement is embedded in the vapor barrier with a layer of molten polyethylene that also fuses the top and bottom layer together permanently.

The Back-
The bottom layer is a cream/tan color and is made from 100% virgin polyethylene resin. The only additive in this layer is the antimicrobial which aids in suppressing mold growth. This layer uses no other additives and has no fillers.

This product, like all of our vapor barriers, has NO off gassing.

The 20 Mil GuardianLiner™ is best used in medium to medium heavy crawl traffic and medium storage needs. This vapor barrier is very thick and durable, however you should consider adding a second layer in the storage areas to eliminate damage to the moisture barrier layer of your encapsulation.

The 20 Mil GuardianLiner™is measured as a nominal 20 Mil. This means, in the crawl space industry, it is measured across the thread rather than at the plastic. The GuardianLiner™ series is manufactured to the same specs as the most popular competing products. The 20 Mil GuardianLiner™ will measure the same thickness and weight as the CleanSpace product, for example.

In line with most other products in the nominal 20 Mil category the GuardianLiner™weighs in at 85 MSF or 85 pounds of plastic per 1000 sq ft. Compare this to CleanSpace 20 Mil at 84 MSF and NT2000 20 Mil at 74 MSF.

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

The 20 Mil GuardianLiner™ has an anti-microbial added to it's resins to enhance its natural ability to resist mold and mildew. This crawl space liner offers an extremely high level of quality for the cost. Thanks to some recent engineering break throughs we are able to manufacture this high quality REINFORCED vapor barrier at an impressive price. 

Due to the expanding and rising UPS handling and shipping fees we are forced to add $9.28 at checkout for each roll.

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