Since you cannot cut tempered glass, precise measurements are critical.

Replacing a broken window pane might seem like a simple weekend task, but outdoor temperature plays a critical role in whether that new glass stays put or cracks within a week. From the flexibility of your putty to the risk of "thermal shock," timing your repair is just as important as measuring the glass.

: Apply a final bead of glazing putty at a 45-degree angle around the edges. Smooth it with a putty knife and let it cure for several days before priming and painting. YouTube +10 Note: For modern double or triple-pane windows, you typically must order a completely new sash or glass unit from the manufacturer as they are factory-sealed. Facebook +1 AI can make mistakes, so double-check responses Copy Creating a public link... You can now share this thread with others Good response Bad response 17 sites 🛠️✨ Don’t let a broken window pane get the best of you. Tom ... Jun 4, 2025 —