How to install french doors

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How to install french doors

View the video

Project Overview

French doors are a great way to add style and let light into your home. You can also create a link between your indoor and outdoors. We’ll show you how to carefully install some French doors with the help of a couple of mates.

Continue to step-by-step instructions

Step by Step Instructions

1 Measure for the door jamb
2 Cut the floor
3 Finish the cut with a hand saw
4 Install the flashing
5 Install the frame
6 Check the frame is sitting straight
7 Secure the doorframe
8 Remove the door screws
9 Lift the doors into place
10 Attach the door to the doorframe
  • Step 1. Measure for the door jamb

    On the floor, measure and mark 10mm past the stud work on both sides of the door. This will allow enough room for plasterboard to be fitted. Use the spirit level to draw a straight line between the two marks. 

  • Step 2. Cut the floor

    Set the circular saw to a depth that doesn’t cut into the joists below. With your safety equipment on, cut along the line you’ve marked out with a circular saw. 
  • Step 3. Finish the cut with a hand saw

    The circular saw is hard to completely cut-out the floor, so use a hand saw to finish the cut. Knock the floor out with a hammer and chisel, and then tidy the corners up with a chisel.

  • Step 4. Install the flashing

    You need to install flashing along the stud for waterproofing. Cut the flashing to length and use the staple gun to attach it to the joists. Make sure it goes up and over the floor and up the stud.  

  • Step 5. Install the frame

    Have someone help you lift the frame for the French doors into place. Then drill four pilot holes on either side of the frame.

  • Step 6. Check the frame is sitting straight

    Use your spirit level to make sure the frame is sitting straight. Then use packers to adjust the level if you need to. Also make sure you have left a 10mm gap for the plasterboard.

  • Step 7. Secure the doorframe

    Get someone to help you hold the doorframe in place. Then use the cordless drill to drill screws into the four pilot holes on each side of the door.

  • Step 8. Remove the door screws

    Use the cordless drill to remove the door screws from the top and bottom of the doorframe.

  • Step 9. Lift the doors into place

    You will need two people to help you lift the doors into place. Put some packers at the base of the doorframe. This will give the door something to sit on and protect the frame.

  • Step 10. Attach the door to the doorframe

    Line up the door hinges with the holes in the doorframe. Use your cordless drill to attach the door at the top and the bottom. Repeat Steps 9 and 10 to attach the other French door.

Tools and Materials


  • Chisel
  • Circular saw
  • Cordless drill with a countersink drill bit
  • Drill bits
  • Hammer
  • Hand saw
  • Measuring tape
  • Packing
  • Pencil
  • Safety equipment
  • Scissors
  • Screwdriver
  • Spirit level
  • Square
  • Staple gun


  • Flashing
  • French doors
  • Screws
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