Ideas on permeability is a three-part e-book that takes a close look at how moisture is managed in the wall assembly. This curated collection of technical articles from The Construction Specifier illustrates:

• basic differences between air and vapor barriers, and their role as part of an effective building envelope system;
• the need to take a holistic approach to designing a wall system by not only providing adequate protection against water intrusion, but also enabling the wall to dry out when it inevitably gets wet; and
• the importance of designing systems with more resilient and adaptive product choices such as smart vapor retarders and hybrid assemblies in certain climate zones to optimize building performance.