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- 1). Check window frames for air leaks. Light a candle and hold it 4 to 6 inches from the window flame. Observe the flame for wavering or flickering. If the flame falters, you have located an air leak. Secure loose frames to the building and recheck for air leaks. If leaks persist, remove the frame and install weather stripping between the frame and the wall or caulk around the perimeter of the window casing.
- 2). Examine the window for any loose panes. Seal the perimeter of any loose panes with silicone or window caulking.
- 3). Check storm windows for a secure fit. Clean tracks of any debris to assure a snug fit. Repair tracks, if necessary and attach securely to the building. Caulk around the frame to prevent air from entering. Open and close the storm windows to be sure they function properly. Close the storm window completely. Windows that have been left open even a 1/4-inch create an area for heat to escape and cold air to enter.
- 4). Cover the outside of the windows with heavy plastic to prevent cold air from reaching the inside of the window, if you have wooden window frames. Staple the sheet of plastic over the outside leaving 4 inches all all sides. Secure the edges with wooden strapping and staple or nail to the outside window frame. Trim excess plastic.
- 5). Purchase shrink plastic designed to apply to the inside of windows if outside plastic is not feasible or desirable. Apply the double-sided tape to the perimeter of the window frame. Attach the plastic, beginning at the top and working downward. Follow manufacturer's directions for shrinking the plastic with a hair dryer. Check to be sure all edges are held securely by the tape.
- 6). Install blinds or insulated shades to block cold air and prevent warm air from escaping. Attach window quilts to velcro and hang them from the frame of the window to provide protection during cold winter nights. Remov the quilts during daylight hours to let in light. Hang solar curtains to capture the sun's rays during the day and prevent heat loss at night.
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