TegoVapra™ 20GB is a premium seven-layer co-extruded gas and vapor barrier manufactured from high-quality virgin polyethylene and EVOH (ethylene vinyl alcohol) resins. Engineered to provide exceptional puncture resistance, impact strength, and long-term durability, TegoVapra™ 20GB delivers superior protection against the transmission of moisture vapor, soil gases, and hazardous chemical vapors.
Utilizing advanced EVOH barrier technology, TegoVapra™ 20GB exhibits permeability rates more than 100 times lower than conventional high-performance polyethylene vapor retarders when tested against methane, radon, and a broad range of volatile organic compounds (VOCs). Independent testing has verified its effectiveness in resisting the migration of contaminants including BTEX compounds, hydrogen sulfide (H₂S), trichloroethylene (TCE), perchloroethylene (PCE), methane, radon, and other harmful chemicals and odors commonly associated with vapor intrusion sites.
Designed for use beneath concrete slabs, TegoVapra™ 20GB helps mitigate hazardous vapor intrusion that can adversely affect indoor air quality and occupant health. Its multi-layer construction provides outstanding chemical resistance and long-term barrier performance for commercial, industrial, institutional, and residential construction applications.
TegoVapra™ 20GB exceeds the requirements of ASTM E1745, Standard Specification for Plastic Water Vapor Retarders Used in Contact with Soil or Granular Fill Under Concrete Slabs, including Class A, B, and C classifications. Available in a 20-mil thickness, it is designed to satisfy the most demanding project specifications for vapor and gas protection.
Manufactured under the stringent requirements of an ISO 9001 Certified Quality Management System, TegoVapra™ 20GB delivers consistent quality, reliability, and performance for critical below-slab protection applications.
