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Energy Code Math Lesson: a good primer on parallel path calculations

Anyone who's taken a course in energy modeling or building science knows that continuous insulation trumps cavity insulation due to thermal bridging through framing members. This article in Structural Building Components Magazine (SBC) reviews basic parallel path calculations for structural assemblies...

https://www.sbcmag.info/news/2017/aug/energy-code-math-lesson-why-r-25-wall-not-equal-r-205ci