What is the Difference Between “R Value” vs. “U Value” of Glass

Question: What is the “R-Value” of Glass? Glass Detective, Can you tell me how to calculate the “R-Value” of glass based on its “U-Value”? I have an issue with a building inspector in my town based on energy codes, and my wall area must achieve a certain overall “R-Value” for me to get a certificate […]

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