Air Barrier; Performance Requirements
Air barrier systems typically are assembled from materials incorporated in assemblies that are interconnected to create enclosures. Each of these three elements has measurable resistance to airflow. The recommended minimum resistances or air permeances for the three components are listed as follows:
- Material: 0.02 l/(s-m2) @ 75 Pa
- Assembly: 0.20 l/(s-m2) @ 75 Pa
- Enclosure: 2.00 l/(s-m2) @ 75 Pa
