First remove the existing door trim and frame.
Changing door frame size.
Then install a pre hung door and replace the trim.
Unless your house is very old you ll have little problem finding a door to fit.
Open up the entire area both inside the room and out with.
The door jamb is the frame that installs in the wall and supports the door via hinges.
Measure the new trim against the door.
If the knob is to the right select a right handed door.
If the doorknob is on the left you need a left handed door.
How to make a door frame smaller.
This thickness is designed for installation in a standard two by four wall constructed by studs that are.
Most trim comes in 8 or 10 ft 2 4 or 3 0 m sections.
Check to see how the casing fits against the siding.
Open the door and stand with your back to the hinges.
First purchase some trim from the home improvement store.
However if your doorway is square or if the existing trim is difficult to replace you can keep the doorway and replace the door.
This will give you room to space the door frame off of the sub.
Just add 2 to the width of the actual door size.
Narrow doors and doorways have a tendency to make the room feel cramped.
Some blank doors have a specific swing direction.
You should add 2 1 2 to the height of the actual door.
Hold a level against the hinge jamb and adjust the door and frame until the jamb is plumb.
Then set the door in the opening for a test fit.
Use your old trim as a sizing guide or hold the new trim against the door frame.
If you have a little carpentry experience this is likely a project you can tackle by yourself.
The most common door height is 80 inches although most are available 78 inches tall as well.
If your door frame is damaged the best thing to do is to replace it with a pre hung door which comes inside a pre built frame.
Framing rough opening sizes are really quite simple.
The strike side the side with the lockset of these doors has a beveled edge so the door can swing freely.
If your door got kicked in due to a break in the most important thing is feeling secure again.
How to replace a 32 inch interior door with a 36 inch door.
Getting the rough opening size right the first time will save you from frustration when installing your doors.
The steps below.