Replacing a broken window may seem daunting, but with the right tools and some patience, it’s a manageable DIY project. Not only does replacing a broken window restore the safety and aesthetics of your home, but it also helps maintain energy efficiency. Here’s a step-by-step guide to help you learn how to replace a broken window.

Steps To Replace A Broken Window

Safety Tip: Always wear heavy-duty gloves and safety glasses to prevent injuries.

1. Assess the damage to determine if the glass is cracked or shattered.
• Handle cracked glass carefully to avoid injury.
• Clean up any broken glass if it’s shattered.
2. Use a utility knife to cut along the edge of the glass to free it from the frame.
3. Push out large glass pieces gently from the inside.
• Remove small shards with pliers.
4. Safely dispose of the broken glass in a sealed container.
5. Use a utility knife or paint scraper to remove old glazing (putty) from the window frame.
6. Heat tough glazing with a hairdryer to soften it.
7. Remove glazing points (metal pins) using a pry bar or flathead screwdriver.
8. Measure the height and width of the window frame in three places (top, middle, and bottom).
• Use the smallest measurement for each dimension.
• Subtract 1/8 inch from both the width and height to allow for expansion and contraction of the glass.
9. Carefully insert the new glass into the frame by pressing it gently into place.
10. Insert new glazing points every 6 inches around the window to hold the glass securely.
11. Apply new glazing putty by rolling glazing putty into thin strips.
12. Press the putty around the edge of the glass to fill the gap between the pane and frame.
13. Use a putty knife to smooth the glazing for an even seal.
14. Let the glazing dry for at least 24 hours before painting.
15. If needed, touch up the window frame with a fresh coat of paint.
16. Use a small paintbrush and exterior paint to match the frame.
17. Clean up and inspect to ensure the glass is securely in place and check that the window opens and closes smoothly.