How to Install Interior French Doors

In some interior designs French doors are used as a focal point. This focal point is utilized to determine which additional features and details are added to the room design. Interior French doors are also used to open up and to separate living spaces. 

• Interior French door unit


• Measuring tape


• Nail gun


• Battery-powered screwdriver


• Pencil 


• Paper


• (4) 2 by 4s


• Level


• Caulking gun and one tube of caulking

1. Determine the dimensions of the door opening. Measure the length and width of the door opening using the measuring tape.


2. Record these dimensions in a safe place.


3. Purchase the interior French door unit from the local building supply company or an online vendor of your choice.


4. Solicit the aid of an assistant and remove the old door unit. Disconnect the hinges from the doorjamb using the battery-powered screwdriver.


5. Place the old door unit in a safe location away from the work area.


6. Frame up the door opening with 2-by-4s. Ensure that the dimensions of the new doorframe are level using the level.


7. Apply caulking to the all exterior edges of the door frame. Allow the caulking to dry for at least 24 hours. 


8. Install the interior French door unit. Install the bottom portion of the interior French door unit first pressing it firm against the caulking. 


9. Secure the interior French door unit with the provided hinge brackets. Use the battery-powered screwdriver to ensure that all screws are tight.


10. Apply caulking on top of each screw installed in step 9.