Two of the four control layers in a building envelope, air barriers andvapor retarders are frequently misunderstood by builders, architects andeveryone else. Why are they important? Building science experts Steven Baczek and Brian Pontolilo join us to discuss this topic.

If you'd like a primer, Brian's Fine Homebuilding article is a great overview of the control layers: https://www.finehomebuilding.com/project-guides/insulation/walls-that-work-an-intro-to-the-four-control-layers

You can watch the recording of this episode on YouTube or on GBA: https://www.youtube.com/@thebsandbeershow4723https://www.greenbuildingadvisor.com/blog/bs-and-beer

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