Find the height and width of your empty doorway by running a tape measure down one side then stretching it across the top.
How to make an exterior door frame smaller.
The larger door space should look as if its design is original to the home s construction.
If you re narrowing the frame by more than an inch remove the hinge side.
If a door is not planned determine the size of the finished opening and add 5 8 of an inch for drywall at each side of the opening.
It s important to make improvements that fit harmoniously with the size of the home s front windows and porch components however.
Cut the door header.
Measure the doorway where you ll be installing your door.
Mark the width of the smaller framed opening on the floor at the.
Before you get to sawing gluing and sanding you ll need to know exactly how big your door needs to be.
To make the door header the top of the door frame cut two 2x4s to the same length as the width of the original opening and nail them securely together.
Pry off the door casing and the knob side and top jambs with a pry bar if you only need to fur out one side of the frame.
Make sure you jot your measurements down.