20 Mil High Strength™ by SilverBack®
High Strength™ is a 20 Mil Vapor Barrier and the gold standard in crawl space moisture protection. Engineered for performance, this barrier is constructed from 100% virgin polyethylene resin and reinforced with high-strength polyethylene ribbons woven in a cross-hatch pattern. A PURE Premium® laminated surface provides a smooth, seamless finish for easier installation and a professional look.
Unlike inferior coated woven products, this High Strength™ barrier offers superior puncture and tear strength. While maintaining flexibility of a 12 mil, but delivering the strength of a true 20 mil.
Key Features:
• True 20 Mil Thickness – Measured across the entire smooth surface
• Reinforced with Virgin Polyethylene Ribbons – Superior strength without added bulk
• Seamless Construction – No panels, welds, or weak points
• Laminated with PURE Premium® Film – Durable, clean, and smooth
• Installs Easily – Flexible and manageable even in tight crawl space conditions
Lab Tested
Every roll of High Strength™ is tested by K&N Labs in Minnesota for VOCs and odor-causing contaminants - ensuring clean air and peace of mind.
Crawl Space Encapsulation® Approved
Not all liners offered on the internet in the 20 mil crawl space vapor barrier class are approved for use in a Crawl Space Encapsulation®. High Strength™ has met the strict criteria to provide a Do It Once™ installation. High Strength™ meets the following standards:
• 100% made with first use virgin polyethylene resin
• Actual plastic thickness is over .012″ or 12 mil
• Passes Tested Pure™ lab testing standard for odor causing impurities
• Each roll sold must have an individual serial number
• Meet Class A testing requirements
• Less than .01 perms
• GS1 UPC tracking number
• All rolls have protective wrapper prior to installation
• All layers and welds from factory must be bonded with polyethylene- no glues or tapes
• Minimum 30 year warranty
Available Roll Sizes
• 46" x 85' – 325 square foot per roll
• 12' x 85' – 1,020 square foot per roll
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