Backstop® NT-VB

A Liquid Applied, Water-Resistive Membrane, Air Barrier and Class I Vapor Retarder

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.

  • Includes a reinforcing fabric at sheathing joints
  • Bonds to most construction materials
  • Fluid applied/Fast drying
  • Can be exposed for 180 days
  • Ensures a continuous film barrier across transitions
  • No need for multiple products
  • Easy to use
  • Not subject to tear off or damage from wind