You might feel a draft. Or notice that your window sashes are damaged. Maybe the panes fog or condensation collects between them. Or, worse, the frame itself is rotting. If any of these scenarios are ...

QWe live in a 15-year-old house with double-pane wood windows. After I washed them, I noticed moisture showing between the panes on two windows. The problem windows are 4 by 6 feet, with mullions ...