26 Oct '16, 11pm

Wall Assembly comparison of framing methods #embodiedcarbon measurements #susty #Building

Without air sealing all insulation performs poorly...this is known science. But were missing the entrance points where air invades our insulation cavity. We need to focus on framing to sheathing gaps at the bottom plate and top plates that go completely unsealed. Installing a AB on the wall face is not stopping air at its entrance points. It is midaigatuing but not s When properly sealed those thermal bypass gaps allow all of these materials to perform to their optimum levels. Hard to consider and I hesitate to use the word- Enclosure because countless data (ASTM E283) informs us that the wall cavity is a dynamic, fee flow of air currant. Conventional wisdom says the cavity has a convection loop occurring within the cavity. That would only occur if the cavity was actually sealed...correct ? Instead, ASTME283 (pressurizing walls assembly) demonstrates a free flow of air in ...

Full article: https://www.buildinggreen.com/newsbrief/study-vets-materi...

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