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R-value
[ ahr-val-yoo ]
noun
- a measure of the resistance of an insulating or building material to heat flow, expressed as R-11, R-20, and so on; the higher the number, the greater the resistance to heat flow.
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˜yÐÄvlog History and Origins
Origin of R-value1
1945–50; R, symbol for resistance
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Example Sentences
Examples have not been reviewed.
Your insulation’s effectiveness is measured in thermal resistance, otherwise known as R-value.
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The ideal R-value for your home depends on what kind of space you’re insulation and the climate you live in.
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Make sure your pro provides a fact sheet that explains the R-value of your materials.
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Most home insulation is rated between R13 and R60, with the highest R-value usually reserved for the attic.
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A higher R-value means the insulation is better at slowing down heat.
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