White Cap 100 mil Radiant Vapor Barrier

The White Cap 100 mil Radiant Vapor Barrier, with its foil-backed, cross-woven design and foam core, offers superior protection against moisture, mold, and allergens in basements and crawl spaces.

This lightweight, ASTM-compliant barrier features a metalized film for a “zero-perm” moisture and gas shield, and its versatility includes multiple sizes and applications, such as insulation and waterproofing, while preventing mold growth and ensuring comfort for users.

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Product Description

The White Cap 100 mil Radiant Vapor Barrier is a foil backed woven liner designed to encapsulate basements and crawl spaces. Composed of a bright white cross-woven skin laminated to a high- density flexible foam core, and foil backing it offers the ultimate protection against moisture, mold, mildew, allergens, and fungus. The 100-mil thickness combined with the quality of the white cap brand allows it to exceed ASTM standards and be optimal choice for your basement and crawl space encapsulation jobs. Key Features:
  • ASTM tested for additional moisture protection
  • Conforms nicely to piers, columns, and transitions
  • Metalized film creates a “zero-perm” barrier to moisture and gases
  • Available in multiple configurations
  • May be used for radiant barrier applications by reversing the foil side inward
  • Lightweight and easy to handle
  • Inorganic and will not support mold growth
  • Cushioned for comfort — great for installers, homeowners, and service technicians
Recommended Uses:
  • Crawl space Vapor barrier Insulation
  • Basement wall vapor barrier/ Waterproofing projects
Product ID / Size Chart:
  • WCWW100-4X125 RAD: 4’ X 125’ Roll – White/ Foil
  • WCWW100-6X125RAD: 6’ X 125’ Roll – White/Foil



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