The Liner Guys
1. Product Description
The Liner Guys Cross-Woven Polyethylene Vapor Barrier is a high-performance, multi-ply vapor
retarder designed to prevent moisture migration from the soil into crawl spaces and other
enclosed areas. Its robust construction helps protect against common issues such as mold,
mildew, allergens, fungus, heat loss due to damp insulation, wood rot, and overall degradation
of the encapsulated space. This product also serves as a barrier against radon and methane
gases.
2. Product Name
The Liner Guys Cross-Woven Crawl Space Vapor Barrier
3. Manufacturer
The Liner Guys
contact@thelinerguys.com
www.thelinerguys.com
(305) 842-9079
4. Material Composition
The Liner Guys Cross-Woven Polyethylene Vapor Barrier is a multi-ply polyethylene laminate.
The material is flame retardant. It is a white, triple-ply, extrusion coated, virgin polyethylene
membrane manufactured using woven high-density fibers yielding exceptional strength-
to-weight ratio, tensile strength, and puncture resistance.
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5. Standard Thicknesses
7-mil (Nominal)
12-mil (Nominal)
16-mil (Nominal)
20-mil (Nominal)
Custom thicknesses available upon request.
6. Standard Roll Sizes
4' x 200' (800 SF)
6' x 100' (600 SF)
8' x 100' (800 SF)
12' x 100' (1,200 SF) - Rolls of 12' x 100' are typically folded on 6' cores for ease of handling.
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7. Standard Colors
White/White
Custom colors available and can be quoted per requirement.
8. Basic Use
This vapor barrier is primarily used to prevent moisture migration from the soil into crawl
spaces. It provides protection against mold, mildew, allergens, fungus, radon gas, methane
gas, heat loss due to damp insulation, and wood rot.
9. Key Features
Cross-Woven for enhanced strength and durability.
High strength-to-weight ratio.
Exceptional tensile strength.
High puncture resistance.
Odor-Free.
Limited Lifetime Warranty.
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10. Applicable Standards & Test Methods
(see table below)
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11. Installation Instructions
Install The Liner Guys Cross-Woven Polyethylene Vapor Barrier using appropriate sealing methods
such as tape, mechanical fasteners, termination bars, and/or high-grade construction
adhesive to the upper portion of the block/concrete wall.
*Leave at least a three-inch gap from the sill to the top of the vapor barrier for future termite
inspection.
*Seal the top edge with urethane caulk.
*Seal any holes or openings with vapor tape, vapor patch, and/or vapor mastic to maintain
integrity.
*Overlap joints a minimum of twelve inches and seal overlaps together with vapor tape.
These are general instructions. Architectural and structural drawings should be reviewed and
followed. Detailed installation instructions can be obtained from The Liner Guys website.
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12. Warranty
Limited Lifetime Warranty.
13. Certifications & Compliance
This product is compliant with the following ASTM standards: ASTM E1745 , ASTM E84-21 ,
ASTM E154 , ASTM D1709 , ASTM D6241 , and ASTM E96. It is also Odor-Free.
14. Disclaimer
To the best of our knowledge, the specification chart lists typical property values and are
intended as guides only, not as specification limits. The manufacturer makes no warranties as
to the fitness for a specific use or merchantability of products referred to, no guarantee of
satisfactory results from reliance upon contained information or recommendations and
disclaims all liability for resulting loss or damage.
