Envirotect AVB50 Air & Vapour Barrier is a spunbond non-woven, polypropylene construction membrane with a unique air and vapour PP coating. Envirotect AVB50 is designed and developed for use in timberframe, light steel gauge, modular, and leisure building applications. Envirotect AVB50 delivers a robust approach to airtightness where the internal wall meets the external wall, providing a continuous barrier throughout the building. Envirotect AVB50 also significantly reduces the risk of interstitial condensation in accordance with BS520:2021 Management of Moisture in Buildings.

Envirotect AVB50 has been developed and manufactured by Permavent using the latest technologically advanced methods available. Envirotect AVB50 provides a high specification, class-leading walling membrane solution, ensuring a robust approach to airtightness.

Suitable Envirotect AVB50 Applications:

• Timberframe
• Light Steel Gauge
• Modular
• Leisure Building

• Provides effective airtightness where the internal wall meets the external wall
• Flexible and easy to install
• Meets and exceeds waterproofing requirements in BS EN13589 – 2:2014 (W1)
• Envirotect greatly exceeds the requirements of the updated guidance in building regulations Approved Document Part L
• Significantly reduces the risk of interstitial condensation in accordance with BS520:2021
• Available in 0.5 x 45m and and 1.5 x 30m roll size