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What are R-values and U-values?
Last Updated (Wednesday, 31 December 1969 18:59) Written by Mark Henry Wednesday, 27 February 2008 17:04
R-value is the resistance a material has to heat flow. The higher the R-value, the greater the resistance.U-value is the amount of heat transferred through a material. The lower the U-value, the slower the rate of heat flow and the better the insulating quality.


