Here is your comprehensive guide to assessing, prepping, and fixing a cracked window pane. Step 1: Assess the Damage

If you can't replace the glass immediately, you need to secure the area to prevent the crack from spreading and to keep the weather out.

Press the new glass firmly into the putty bed. Pull back slightly to ensure there are no gaps. 5. Install Glazing Points

If you can't replace the glass immediately, use these methods to stop the crack from spreading:

You will likely see hard, dried putty (glazing) holding the glass in place.