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.
- Backstop NT-VB is applied using a trowel, or texture spray equipment.
Backstop NT-VB is designed for use with Dryvit Systems as well as other building cladding systems. When used with the Dryvit AquaFlash® System, Backstop NT-VB provides an effective air/vapor/water-resistive barrier for most substrates.