R - Value

Insulation R value is measured in a laboratory at 75 degrees Fahrenheit with no wind or moisture infiltration. Under those conditions who needs insulation? The r value of an insulation product does no test the product's ability to resist heat loss due to air leakage (air infiltration) or moisture accumulation, two major sources of heat loss. But Mother Nature does and you pay for it every month when your energy bill is due.


Click the fairy to learn why R value is not an accurate measurement of the performance of insulation.


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