What R-Value Really Means
from Walls & Ceilings 'If Walls Could Talk'
Tom Harris discusses how R-value, the standard metric for insulation performance, only measures conductive heat transfer under controlled lab conditions while ignoring convection, radiation, air movement, and moisture. He highlights research and the new A-Value study, which aims to measure full wall assembly performance more accurately in real-world conditions.
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This episode is 11 minutes long.
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This episode was published on February 12, 2026.
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