UnBuild It | Episode 139: Roof framing, thermal bridging, and cold climate wall worries
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The boys start with a really cool problem-solving discussion involving monopoly framing, big overhangs, and thermal bridging. And the follow-up is an excellent question from Western Canada regarding the use of ZIP sheathing with a Class I interior vapor retarder. It's a great discussion involving R-values, air barriers, vapor permeability (including all Classes of vapor retarders), wetting, and drying. Whew! Good thing that Steve had a "great" joke to close this one out...(gag). Huge thanks to our episode sponsor, Mbrico. PETE'S RESOURCES:GBA: "Calculating Thermal Bridging in a Wood-Framed Building:"
BuildingScienceAdvisor
GBA "Can Polyethylene Be Used As An Air Barrier?"
Mbrico Tile Decks
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