broken window pane replacement
https://rapid-wiki.win/index.php/How_Whole_Home_Window_Replacement_Boosts_Comfort_and_Value
Replacing a broken window pane is a straightforward job if you're handy, but it's important to measure carefully and use the right kind of glass. I had a cracked pane in my old wooden sash window, so after removing the broken pieces and cleaning the frame, I cut a new piece of single-pane glass to size, applied a thin bead of glazing putty, and secured it with glazing points. Once the putty dried, I painted the frame to match, and it's been holding up well through the seasons.