Question Regarding Increasing the “U” Value of Glass: Dear Glass Detective, We have glazed windows and need to improve the overall U factor from .338 to .35. Is there an aftermarket film that will increase U factors? -Jim F. Answer to Question Regarding Increasing the “U” Value of Glass: Jim, Thank you for contacting the […]

Question:  Glass Detective, Can you tell me how to calculate the “R Value” for a piece 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 of occupancy […]