The Complete Guide to Replacing a Broken Window Pane A broken window pane compromises home security, lowers energy efficiency, and introduces moisture risks. restores your home's thermal boundary and prevents expensive structural water damage. Learning this skill allows homeowners to save on professional repair costs.

Now comes the satisfying part—making the window whole again.

This is the most tedious part of the job. The glass sits in a "rabbet" (a groove in the frame) and is held in place by "glazing points" (small metal clips) and hardened putty.