UnBuild It Podcast
THE GOOD news: our homebuilding industry is jam-packed with new materials, new techniques, and new systems, and it’s so easy to get information online in an instant. THE
BAD news: How do we know what we can trust, what will work, and under what conditions? Where do we turn to separate the spin-and-hype from the true-and-square? We’ve got you covered! The UnBuild It Podcast is an industry-leading opportunity to get good information. UnBuild It podcast is a three-member team – Peter Yost, Building Scientist; Jake Bruton, Builder, and Remodeler; and Steven Baczek, Architect. We are nationally recognized industry leaders: Jake as a homebuilder, Steve as an architect, and Peter as a building scientist. You can find us at leading homebuilding industry events, in top-notch publications, and online media outlets. We believe that solid industry-related information has four key ingredients;
RELEVANCE: You need insight on your job site. Jake, Steve, and Peter are in the field regularly doing what we strive to do. We walk the walk – then talk about the walk. We have worked together long enough to build on each other’s expertise and not take ourselves too seriously. We are among the best at taking what may seem like complicated concepts, breaking them down, and turning them into job-site-ready breakthroughs.
ACCURACY: Jake is often quoted as saying, “Trust but Validate.” We don’t ask you to be the bleeding, leading edge; we develop trusted solutions based on our work in the field, pushing each other to practice what we preach. Our accuracy comes out of triangulation: building, design, and performance.
UTILITY: We guarantee that each podcast episode will move you from all ears to all action. Our information is born from our work. We pride ourselves on delivering information you can use the same day you listen to an episode.
CAMARADERIE: We work together because we love homebuilding, hitting the airwaves, and humor. We are not doing our job if you are not enjoying learning with us during each episode.
UnBuild It Podcast
162 - Back to Basics: Air Control Layers Explained
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Airtightness is one of the most important—and most measurable—parts of building performance. In Part 2 of the Back to Basics series, Steve, Jake, and Pete break down how air control layers work, why continuity matters, and how blower door testing exposes the difference between theory and reality.
The crew starts with several principles that apply across multiple control layers: staying in one plane makes continuity easier, simpler details are more likely to succeed, and combining control functions in a single material can reduce opportunities for failure. They also revisit one of their favorite ideas: eliminate “confused spaces.” Attics, crawlspaces, and other areas should clearly belong either inside or outside the building enclosure.
Then the conversation gets specific to airtightness. Blower doors do not lie. ACH50 provides the quantitative result, but finding the actual leaks—their size, location, and number—is just as important. The boys discuss why one blower door test is rarely enough, how wind, stack effect, and fans drive air leakage, and why two mediocre air control layers do not equal one good one.
For renovations, the sequence is simple: blower door test first, air seal second, insulate third.
Pete's Resources:
EPA – Moisture Control Guidance for Building Design, Construction, and Maintenance
ENERGY STAR Thermal Bypass Checklist
A House Needs to Breathe...Or Does It? An Introduction to Building Science by Allison Bailes