How to Repair a Cracked Home Window

As a homeowner, dealing with a cracked window can be stressful. Not only does it affect the aesthetics of your home, but it can also be a safety hazard. Fortunately, repairing a cracked window is not as difficult as you may think. With the right tools and a bit of patience, you can fix the problem yourself without having to hire a professional. In this article, we will guide you through the steps to repair a cracked home window.
Cracked Home Window

Tools and Materials Needed

Before you start repairing your cracked window, make sure you have the following tools and materials:

  • Gloves
  • Safety glasses
  • Putty knife
  • Glass cleaner
  • Tape measure
  • Glass cutter
  • Glazing compound
  • Glazing points
  • Silicone caulk

Step-by-Step Guide

Step 1: Remove the Broken Glass

The first step to repairing a cracked window is to remove the broken glass. Put on gloves and safety glasses to protect your hands and eyes. Use a putty knife to remove any loose pieces of glass. Be careful not to damage the window frame.

Step 2: Clean the Window Frame

Once the broken glass is removed, clean the window frame with glass cleaner to remove any dirt or debris. This will ensure that the new glass adheres properly to the frame.

Step 3: Measure the Window Opening

Measure the opening where the glass will be placed. Use a tape measure to get an accurate measurement of both the height and width of the opening.

Step 4: Cut the New Glass

Using a glass cutter, cut a new piece of glass to fit the opening. Make sure the glass is the correct size and shape to fit the window frame.

Step 5: Apply Glazing Compound

Apply a layer of glazing compound to the window frame. Make sure to apply the compound evenly and cover the entire frame.

Step 6: Insert the New Glass

Insert the new glass into the window frame. Press it firmly against the glazing compound to ensure a tight seal.

Step 7: Secure the Glass

Secure the glass in place with glazing points. These small metal pieces will hold the glass securely in place.

Step 8: Apply Silicone Caulk

Apply a thin layer of silicone caulk around the edges of the glass to seal it in place. Smooth out the caulk with a putty knife for a neat finish.

Advantages and Disadvantages


  • Repairing a cracked window yourself can save you money compared to hiring a professional.
  • It can be done relatively quickly with the right tools and materials.
  • You can ensure that the repair is done to your satisfaction.


  • Repairing a cracked window can be dangerous if proper safety precautions are not taken.
  • If not done correctly, the repair can be ineffective and the window may need to be replaced.
  • It may take some time and effort to find the right tools and materials.


Q: Can I repair a cracked window without replacing it?

A: Yes, you can repair a cracked window without replacing it. Follow the steps outlined in this article to fix the problem yourself.

Q: Is it safe to repair a cracked window myself?

A: Yes, it is safe to repair a cracked window yourself as long as you take proper safety precautions. Wear gloves and safety glasses to protect your hands and eyes.

Q: How long does it take to repair a cracked window?

A: The time it takes to repair a cracked window depends on the extent of the damage and your level of experience. It can take anywhere from a few hours to a day to complete the repair.

Q: Can I use any type of glass to replace a cracked window?

A: No, it is important to use the correct type of glass to replace a cracked window. Consult with a professional or refer to the manufacturer's guidelines to ensure you use the proper glass.