Backstop NT-VB is a flexible, polymer-based, noncementitious air/vapor/water-resistive barrier, which resists water penetration, eliminates air infiltration and is classified as a Class I Vapor Retarder over vertical above grade walls. Available in two versions:
Backstop NT-VB is designed for use with Dryvit Systems as well as other building cladding systems. When used with the Dryvit AquaFlash® System or Dryvit Flashing Tape™, Backstop NT-VB provides an effective air/vapor/water-resistive barrier for most substrates.
60 lb pail
WARNING:Cancer and Reproductive Harm - www.P65Warnings.ca.gov