Poorly sealing windows are among the principle causes of energy loss not only in a home, but in commercial and industrial facilities as well. Roughly 30 percent of all the energy used for heating and cooling can slip out through the windows and not only through the glass pane itself, but through the frames, through the closing mechanism and through the gaps between the frame and the wall as well. Although if you talk with a known roofing contractor like Richardson Roofing they will tell you to have your attic inspected as well for proper insulation to help with the energy loss as well.  If you are discouraged by the seemingly high cost and you are still on the fence about replacing your old windows, here are some details about how new windows reduce energy cots:  
  • Modern windows use two or three glass panes separated by either vacuum or gas to reduce the energy that escapes through the surface of the panes by around half;
  • They also use highly efficient frames, usually made from multi-layered plastic or other materials with excellent insulation properties to prevent energy losses through the sides;
  • New windows are fixed using foam or other modern materials that are energy-efficient and have outstanding sealing properties as well;
  • The window closing mechanisms that modern windows are fitted with also contribute to reducing your energy bills by not letting energy escape through gaps caused by improper closing.