Presented below are a variety of crawlspace/basement vapor barriers/ retarders to outfit a crawlspace or basement. The highest recommended and most used products are on top of the list.

The bottom line is that you want to get the job done right the first time with a product that will hold up to its environment. 

VaporBlock®Plus 20

(20 mil)- The Poly Sheeting Gas and Mold Blocker- 7 layer co-extruded barrier AKA Radon Plastic Vapor Retarder

VaporBlock Plus 20 plastic sheeting is a 20 mil polyethylene, high performance vapor barrier intended for under-slab applications where soil-borne gases like radon are a concern. In addition VaporBlock Plus 20 is a top of the line crawlspace liner.  VaporBlock Plus 20 (radon plastic) is 50 times less permeable than typical high-performance polyethylene vapor retarders. This is due to its tight cell structure.Superior unmatched impact strength for both under-slab and vertical wall applications.

VaporBlock Plus 20 is one of the most effective underslab vapor
barriers in the building industry today far exceeding ASTM E-
1745 Class A (Plastic Water Vapor Retarders Used in Contact with Soil
or Granular Fill Under Concrete Slabs).  The 20 mil thickness is designed to meet the most stringent requirements. Vapor Block Plus 20 is a work horse when it comes to protecting your flooring and other moisture sensitive furnishings in your home or office building by greatly reducing condensation, mold and degradation.

VaporBlock Plus 20 is produced within the strict guidelines of our
ISO 9001:2000 Certied Management System.

COLOR:  Gold/White

Roll Size:  10' x 150'

This gas blocker is much less expensive than comparable products.

Click here for VaporBlock 20+ details

Click here for Installation Guide

Click here for VIDEO Facts about Radon Gas in Your Home

Click here for Vapor Tape Plus Tape- A Crawlspace Vapor Barrier Tape!

Crawlspace 1800-High Performance Vapor Retarder-Basement Plastic Sheeting

Crawlspace 1800 is an 18 mil (true thickness) heavy duty reinforced 6 layer extrusion lamination designed specifically for use in the crawlspace and basement industries.  This film has a black back layer and two layers of bright white film, giving it a very CLEAN bright white front side for a pleasing appearance.  Designed as a cost effective wall covering/vapor retarder, Crawlspace 1800 is well suited to the needs of the crawlspace and basement industry.

Crawlspace contains at least 50 strands of high strength cord per square foot, in a square pattern.  Because all layers are extrusion laminated together using molten polyethylene, this is an incredibly strong film, yet, lightweight and easy to use.

Though designed for the crawlspace and basement industries, Crawlspace 1800 can be used in many applications. This heavy duty plastic sheeting for a crawlspaces can  also be fabricate into 3-D shapes, add many accessories, like bung ports, drains, grommets, hems, and loops.

Roll Sizes:  Crawlspace 1800^TM is currently stocked in 12' x 100' and 20' x 50' rolls.

Click here for Crawlspace 1800 details

DURA-SKRIM R20WW-

This liner consists of virgin outer layers of white high-strength polyethylene film laminated together with a black layer of molten polyethylene. Both outer layers contain UV inhibitors and thermal stabilizers to assure long outdoor life. The white layers are designed to reduce heat build up and condensation, and to provide excellent dimensional stability, with a nice clean white surface. A layer of polyester scrim reinforcement placed between these plies greatly enhances tear resistance and increases service life. DURA-SKRIM's heavy-duty diamond reinforcement responds to tears immediately by surrounding and stopping the tear.

Dura-Skrim R20White/White is available in a variety of widths and lengths. Panel sizes up to 50,000 square feet are available.

Click here for Dura-Skrim R20WW details

Poly Scrim 12- Antimicrobial- Blue/White

Poly Scrim 12- Antimicrobial has an antimicrobial additive that inhibits the growth of mold, algae and fungi! The antimicrobial inhibits and/or kills bacteria, fungi, and mildew for critical applications.There are at least 1000 species of mold in the United States. Facilities that can benefit from Poly Scrim 12 Antimicrobial are:

• Crawlspaces
• Health Care Facilities
• Hospitals
• Food Processing Plants
• Homes and Buildings
• Science Research Centers

Standard Roll Sizes from 4' x 100' to 40' x 100' in increments of 4' widths are available.  Standard length and width tolerances are plus or minus 1% (minimum 2")

DURA-SKRIM 12WB-A 12 mil Heavy Duty liner For Crawl Spaces and Basements

Dura-Skrim 12WB (white/black) is a heavy duty liner for crawl spaces. It is reinforced with heavy scrim reinforcement that greatly enhances tear resistance and increases the life of the liner.  It meets or exceeds ASTM E-1745 Class "C". It is available in a variety of widths up to 80,000 square feet.

Dura-Skrim 12 White/ Black Roll Sizes:

6.167' x 100'

12' x 100'

Click here forDura-Skrim 12 WB details

DURA-SKRIM 8WB- White on one side, black on the other!

Dura-Skrim 8WB consists of two sheets of high strength virgin polyethylene film laminated together with a third layer of molten polyethylene with an 8 mil thickness.

Dura-Skrim 8 White/ Black Roll Sizes:

6.167' x 100',   12' x 100', 20' x 100', 24' xc 100'

DURA-SKRIM 6WB - A 6 mil Crawlspace Liner

 DURASKRIM 6WB is an economical, reinforced polyethylene film designed for applications requiring puncture resistance and high tear strengths.