Definitions for r-valueˈɑrˌvæl yu

This page provides all possible meanings and translations of the word r-value

Random House Webster's College Dictionary

R-val•ueˈɑrˌvæl yu(n.)

  1. 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.

    Category: Building Trades

    Ref: Compare U-value.

Origin of R-value:

1945–50; R, symbol for resistance


  1. r-value(Noun)

    Resistance-value - A measure of thermal resistance used in domestic insulation.


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