To correctly determine the size of a rough opening for double or french doors measure the size of each door.
French door rough in dimensions.
Just add 2 to the width of the actual door size.
Framing rough opening sizes are really quite simple.
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.
26 3 8 30 3 8 32 3 8 34 3 8 36 3 8 38 3 8 44 3 8 28 5 8 32 5 8 34 5 8 36 5 8 38 5 8 40 5 8 46 5 8 for units with public access sills subtract 1 from inswing height.
4 11 1 4 and the doors are.
This will give you room to space the door frame off of the sub floor.
For standard wood framed construction the rough openings for doors and windows is typically the actual unit size plus 2 1 2 inches in height and width.
For m e u add actual unit dimension to door rough opening width for total rough opening width.
Now all you need to know is how to properly frame your door rough opening.
Standard door rough openings.
So if each door measures 30 inches wide the width of the rough opening should be 62 inches.
The difference between a rough opening and finished opening is usually 2 3 inches.
Unit widths will be the same as in the table above.
This can be done with an existing door finished opening or a rough opening where you can see the 2x4 s.
For reference standard interior door widths range from 24 36 finished opening.
Many manufacturers make a so called 5 french door in which the rough opening is exactly 5 0 wide but that means that the opening is 5 0 the door frame is approx.
Framing rough openings for windows and doors standard door and windows openings is really straight forward if you follow some simple dimensional rules.