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Articles Tagged ‘thermal efficiency’
Friday, November 6th, 2009 by admin
Your Replacement Sash Windows Thermal Rating.
The thermal rating of a lot of newly produced replacement sash windows is measured in ‘R Value’ as being the preferred measurement of the window manufacturers. The ‘R Value’ measures the resistance to transferring heat. This measurement is affected by the following. · How many layers of glazing are present in the replacement sash windows (i.e. ...