How to Remove a Window Sash from Double Pane Windows

To repair cracked or broken glass in a double pane window, the top and bottom sashes must be removed.

Remove a Lower Window Sash from Modern Windows

Modern aluminum and vinyl frame window sashes are easy to work with, and removal does not require tools. Older double pane windows are more difficult, and care must be taken to prevent breaking the wood when removing the sash.

Step 1

Unlock the window. Push the sliders located on top of the lower sash towards each other.

Step 2

Hold the left and right sliders in place while lifting up the lower sash; the bottom should be just above the frame.

Step 3

Carefully pull the top of the sash towards you and out of the frame. Let go of the sliders and grasp the sash firmly while pulling it towards you and out of the frame.

Remove an Upper Window Sash from Modern Windows

Step 1

Pull the upper sash of the double pane window down by the handles located on the top frame. The top of the sash must be below the frame.

Step 2

Push the sliders on top of the upper sash towards each other. Hold the left and right sliders in place.

Step 3

Pull the top of the sash towards you and out of the frame. Release the sliders and grasp the sash firmly while pulling it towards you and out of the frame.

Remove a Sash from Older Double Pane Windows

Step 1

Wear safety goggles when removing the stops located on the sides of the sashes. Wood-framed sashes are held in place with two wooden stops (one on each side). Slide a wide metal putty knife into the crack between the stop and the window frame. Carefully tap the knife handle with a rubber mallet to loosen the stop. As one section becomes loose, slide the knife down and loosen another section until the entire piece is freed. Repeat this step with the other stops.

Step 2

Grasp the top of the lower sash firmly and pull it out of the frame. If there are cords attached to the sash, hold them while you cut them with a pair of heavy-duty scissors.

Step 3

Grasp the top sash of the double hung window, and carefully pull it down and out of the frame. Use the putty knife to open cracks between the upper sash and the frame if several coats of paint are restricting the sash. Cut any attached cords with heavy duty scissors.

Things You Will Need

  • Safety goggles
  • Wide metal putty knife
  • Rubber mallet
  • Heavy-duty scissors

About the Author

Kayar Sprang has been a professional freelance writer and researcher since 1999. She has had articles published by clients like Kraft Foods, "Woman's Day" magazine and Mom Junction. Sprang specializes in subjects she has expertise in, including gardening and home improvement. She lives on and maintains a multi-acre farm.