PERM-A-BARRIER Wall membranes prevent premature deterioration of the building envelope by minimizing air and water vapor flow through the building exterior.

Benefits and Features:

• Fully bonded - transmits wind loads directly to substrate
• Waterproof and impermeable to moisture - impermeable to the passage of liquid water and water vapor
• Protects against air passage and associated energy losses. 
• Meets new ASTM E2357 standard as required by IECC 2012
• Provides dimensional stability, high tear strength, puncture and impact resistance
• Cold applied and Flexible
• Application surface and ambient temperatures at 5°C (40°F) and above