The size of the door opening will vary depending on the size of the door you plan to install.
Frame a standard door.
96 inches or 8 ft.
Measure your door carefully and cut the opening to fit using a reciprocating saw.
As the distance between the king studs.
So if you have a bedroom door that is 30 wide which is considered a 2 6 or 2 6 door just add 2 to the width and frame it 32 wide.
Mark all the plates at once.
Then add 2 inches to the length of your door to account for the flooring and door jams.
Cut and dry fit the lumber making sure the distance between the jack studs is correct for the door casing.
Maintain a simple consistent nailing pattern.
A typical door opening is 2 inches 5 1 cm wider than the door size being installed to allow for the thickness of the jamb material and shims to plumb the jamb.
This thickness is designed for installation in a standard two by four wall constructed by studs that are.
Determine the size of the door opening.
Two jack studs which fit inside the king studs and are the same height as the door casing.
Some door manufacturers sell doors in 7ft 8ft heights and door widths from 24 inches to 42 inches.
The standard size for an exterior door is 80 inches by 36 inches which is 6 ft 8 inches by 3 ft.
Now all you need to know is how to properly frame your door rough opening.
Door widths vary but an easy way to size the rough opening is to use the door width plus 5 in.
The additional room allows for a 3 4 inch top jamb a shim space above the door jamb and the thickness of.
The height is 80 which is considered 6 8 or 6 8 add 2 1 2 to the actual door height and frame it 82 1 2 high.
The standard height of the rough opening for a door is the door height plus 2 5 8 inches.
The door jamb is the frame that installs in the wall and supports the door via hinges.
The door frame will consist of two king studs which run the entire height of the wall frame.
And avoid toenailing when possible.
There are three simple rules to framing rough openings efficiently.