135 - ZIP-R for CZ 6B - New Construction? Continuous Air Control Layer for Exterior Retrofit CZ 4A?

Two great questions about wall assemblies. The boys dig deep, exploring all the variables to consider for both wall assemblies. And no big surprise: Much of the conversation is about how to get these three control layers right (water, air, thermal) and ALSO get the drying potential (vapor) correct.

PETE'S RESOURCES:

- 2021 IRC - Montana

NOTE: The IRC 2021 does NOT include any chapters on energy efficiency/energy requirements...

- Huber Table for ZIP-R recommendations for all climates

- "Check but Verify - Why We Do Multiple Blower Door Tests:" https://www.youtube.com/watch?v=WDD-BpTZJ3I

- "When to Perform a Blower Door Test (and when not to)"