With wooden double hung windows, if the window weights are not working properly, the windows can be difficult to open or close. Most of the time a few sash cord repairs are all that are needed to get the windows working correctly again.
The window weights are attached to the window its self by means of a cord called a sash cord. The cord is fed over a pulley from the window to the weights. The weights are located behind the window frame in the wall.
The cords deteriorate over time and may eventually fray or break. The counterbalance of the weight is necessary for the window to operate properly. The broken cords make the window difficult to operate and make a prop necessary to keep the window in an open position.
Sash cord repairs are easy to do. Most of the windows have an access hole that is located in the lower part of the window behind the window frame. To access this opening you will need to remove the lower window pane.
To remove the window pane, begin by removing the wood trim that keeps it in place. Use a utility knife to cut through the paint that may be holding it in place and slide a putty knife between the window frame and the trim. Remove the trim from both sides of the window. If there is a metal channel that holds the window in place, it needs to also be removed also. At this point, you should be able to lift the window pane out of its place. If the second sash cord is still in place just cut it to remove the window. You should replace both cords at the same time.
Open the ports and take out the weights. A new cord will need to be threaded through the pulleys by using a sixteen penny nail to provide weight. Attach each cord to the existing window weights and to the lower window. Reverse the other steps to replace the window and finish the job.
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