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coefficient of heat transmission (U-value)





A value that describes the ability of a material to conduct heat. The number of BTU that flow through one square foot of material in one hour. It is the reciprocal of the R-value (i.e. U-value = 1/R-value). The lower the number, the greater the heat transfer resistance (insulating) characteristics of the material.


Related category

   • INSULATION TOPICS