Apply a thin layer of glazing compound to the window frame, making sure to cover the entire surface where the new glass pane will be installed.
| Problem | Solution | |---------|----------| | Putty cracks after drying | Wood wasn’t oiled, or putty was too old. Remove and redo. | | Glass rattles | Not enough putty bedding or missing glazing points. | | Putty won’t stick to glass | Glass is greasy. Clean with rubbing alcohol or mineral spirits. | | Large pane (over 3 sq ft) | Use double-strength glass (3mm). | | Historic window | Use linseed oil-based putty (not latex “glazing compound”). | fix broken window pane
