Dryvit Backstop NTX: Class I Vapor Retarder

  • 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

Technical Data Sheet

Safety Data Sheet

Dryvit Products

Contact Us

Only available in store - contact us for pricing

Dryvit Backstop NTX: Class I Vapor Retarder

Dryvit Backstop NTX 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. Questions? Contact Us.

Available in two versions:
• Backstop NTX is applied using a trowel, or texture spray equipment.
• Backstop NTX Spray is applied by airless spray equipment.

Dryvit Backstop NTX is designed for use with all building claddings, as well as Dryvit EIF systems. When used with the Dryvit AquaFlash System or Dryvit Flashing Tape™, Backstop NTX provides an effective air/vapor/water-resistive barrier for acceptable substrates.

Benefits: Backstop NTX is used straight out of the pail after an initial spin up to provide a continuous membrane with ease of application. The liquid applied coating dries quickly and serves as an excellent surface for adhesively attaching EPS. Backstop NTX is seamless and will not tear. Additionally, it is stable under air pressure differences and will not be affected by wind.

Working Time: Backstop NTX is a water-based noncementitious material and will not set-up in the pail. Keep pail covered when not in use to minimize skinning.

Drying Time: The drying time is dependent upon the air temperature, wind conditions and relative humidity. Under average drying conditions [70 °F (21 °C), 55% R.H.], Backstop NTX will be dry to the touch within 2 hours and cure in 6 hours.

Testing Information: For test data refer to the chart included with this document.

Application Procedure: For complete application instructions refer to, DS831.

Job Conditions: Air and surface temperature for application of Backstop NTX products must be from 40 °F (4 °C) minimum to 100 °F (38 °C) maximum and must remain so for a minimum of 12 hours.

Temporary Protection: Shall be provided at all times until membrane is dry and shall not be exposed to weather for longer than 180 days prior to installation of the specified cladding.