R-value Alone Does Not Measure Insulation Effectiveness

A stack of wooden boards on the display

R-value is a measure of resistance to heat flow through a given thickness of material. In theory, the higher the R-value, the greater that resistance. That’s fine as far as it goes. Unfortunately, R-Value has taken hold in the consumer’s mind as a universal method for comparing insulation – the higher the R-Value, the better…

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