How to Install Replacement Windows

The first step is to remove the old sash from the window frame. In most cases, you’ll need to pry off or unscrew the interior wooden stops to remove the lower sash. (If you’re planning to reinstall the stops, do this job carefully; they break easily.) Next, take out the parting beads to free the upper sash. If your windows, like these, were previously fitted with sash-replacement kits, there won’t be any beads. Simply press in on the jamb liners and pull the top of the sash forward. Then pivot one side of the sash upward to free it from the jamb liners.