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How to Replace a Broken Window

April 17, 2014 Categories: Home Renovation Tips Replacement Windows

In this post, you'll learn ...

  • Tools for replacing a broken window pane
  • Preparing for the new window glass
  • Installing new glass
  • Adding the finishing touches
  • Learn more about Stanek Window’s warranty with a free, in-home consultation

Full Casement or Awning Glass Replacement

How to fix and replace a broken windowWe’ve all had to deal with a broken window at some point in our lives. If you are good with DIY home repairs, then replacing broken window glass won’t be a problem. But be careful, it can be dangerous to work with broken glass, so be sure to wear goggles and work gloves to protect your eyes and hands. Make sure to wear long sleeves, pants and shoes in order to keep your skin safe from nicks and cuts.

Always follow the window manufacture’s guidelines for replacing or fixing any part of your window. Since windows come in all shapes, sizes and materials, instructions for fixing them are usually as unique as the window itself. Also, if your window is still under warranty, it is always recommended to contact the warranty provider first to determine if the break is covered or recommended steps for replacement.

What You’ll Need:

  • Dry paint brush
  • Gloves (work gloves, landscaping or leather)
  • Trash bin or thick cardboard box
  • Small hammer
  • Putty knife
  • Glazier points
  • Glazier’s compound
  • Replacement glass


  • Paper and pencil for tracing
  • Hair dryer

Step One

Tips for fixing a broken window.

Remove all broken window glass from the area. If there are large pieces of glass left in the window, take a small hammer and gently crack them to sizes in which they can be safely lifted out. Be sure to have a trash box nearby for the broken pieces.

Step Two

After removing all the broken glass, take a dry paint brush and brush away all debris from around the casing. You will also need to take a putty knife and remove any old caulking from the frame. If working on a wooden frame, be sure to take caulking and putty off in small pieces, trying to pull too much at once may crack or split the wood. (If you find that the caulking/putty is stuck, try using a hair dryer to soften the material.)

Step Three

Measure the window opening. Be sure to include the quarter-inch or so that is inserted inside the window frame. Some windows are not exactly square. If this is the case, then you’ll need to draw a paper template of the size you need. Getting the glass measurements right is very important, so ask for help from your local Stanek dealer or hardware store if you are not sure.

Step Four

Insert the glass into the frame. Be sure to wear gloves. Lightly insert a glazier point on either side of the window. Once the window pane is secure, gently add glazier points every 3 to 4 inches around the edges to hold the window until you can secure it with glazier’s compound.

Now roll out the glazier’s compound into thin strips, about the size of a pencil, and press it carefully into the edges around the window frame. Use your putty knife to press and smooth the glazier’s compound securely into the space.

Step Five

Let the glazier’s compound dry/cure for at least one day before cleaning the window. You can use alcohol or paint remover to remove paint, putty, and glazier’s compound from the window pane.

If these steps are tedious, or out of your comfort zone, consider replacing the whole window with a Stanek ULTRAEXTREME™ Window. These replacement windows are an excellent choice for optimal energy-efficiency. Our windows also carry a limited lifetime guarantee that you can learn more about from your local Stanek Windows expert.

Stanek Windows are custom milled and designed to give you many years of faithful service. Our windows are manufactured in the USA and give special attention to detail. The custom-milled sash guarantees a precise fit. You’ll also enjoy the customizable options to create a window tailored for your home.

If you’re looking for beautiful, durable windows that are maintenance free, Stanek Windows will exceed your expectations. The automatic tilt-in feature makes them easy to clean and the slim, FIBERMAX™ fully-reinforced sash frame adds structural integrity.

Contact your local Stanek Windows expert to learn more!