How to Replace a Window With a Patio Door


Remodeling can entail many different designs and plans depending on what you want to change or add to your home. One type of remodel project that improves the functionality of a space involves replacing an existing window with a patio door. One type of patio door that you can use is called a French door. Replacing an existing window with a French door will provide access to the outside of your home to a new deck or patio.

Things You'll Need

  • Tape measure
  • Hammer
  • Reciprocating saw
  • Power drill
  • Shims
  • Level
  • Nails
  • Measure the width and height for the opening to determine the size of door that you will need. The most important measurement is from the floor to the top of the window.

  • Remove the existing window. Take of any trim around the window from the inside and outside. Once the trim has been removed you should be able to see the nails that are securing the window to the frame.

  • Cut the nails using a reciprocating saw or use a power drill if the window was secured using screws.

  • Push the window out from the bottom and then lower it until it comes out of the frame.

  • Remove all of the framing below the window frame. Use a reciprocating saw to cut the 2x4 sections of lumber below the window frame. You also will need to cut the bottom plate of the window frame and the section of 2x4 that is attached to the floor.

  • Place the door jamb in the new door opening.

  • Place shims in between the door jamb and the wall studs to create a snug fit for the door. Use a level to make sure that the door remains level.

  • Secure the jamb to the wall studs using screws and a power drill. You also can use a nail gun or a hammer and nails to secure the jamb to the studs.

  • Place trim around the new door on the inside and outside to complete the installation.

Tips & Warnings

  • Fill in any gaps that remain around the door frame with insulation.
  • Cutting nails can cause pieces of metal to fly around, so eye protection should always be used.

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