How to remove window glass from a frame

Windows allow sunlight in our homes, and cool breezes will come through the windows are open. Sometimes these cool breezes are the result of an accidentally broken window and should replace the glass. Before you can measure the frame and replace the window, you will have to remove the broken glass from the frame window. Although window frames come in many styles and materials, glass removal is a direct universal process.


  1. Wear leather gloves to protect hands from cuts on sharp glass. Also protect your eyes. Often when removing glass, small pieces will break or pop, sending very small pieces in the direction of your face.
  2. Remove any large pieces of broken glass. Grab the crystal with your fingers and gently pull it out.
  3. Soften the mastic composite glazing around the glass and frame, with a hair drier or heat gun. The glazing compound can be brittle and hard, which is difficult to eliminate.
  4. Remove the composite soft glazing with a spatula. Scrape the compound from the window frame and the rest of the glass. New vinyl window frames, there is no composite glazing. Insert the spatula between the vinyl retaining strips and the window frame for retaining the strips of the frame.
  5. After removing the composite glazing, use pliers to remove the glass points that fix the glass to the structure. The glazing points are metal triangles with a small tab that sit against the window under the composite glazing in wooden window frames.
  6. Remove any remaining glass frame from the window. Brush the area to remove small particles of glass. When working with wood frames, lightly sand the area with medium-grain sandpaper. This will prepare the area for a new glass installation of the window.