Measure from inside to inside of the opening.
How much should interior barn door overlap opening.
Measure from the header to the floor to determine the door length you need.
Generally most standard barn doors are approximately 36 x 84 or 42 x 80 with enough extra lip to overlap most standard door frames 36 x 80 by an inch or so.
We recommend 1 1 2 to 2 of overhang on each side.
For door openings with casing molding.
This greatly depends on where the doors are going.
Since the door sits off the wall in order to slide it must be wider that the opening to fully hide the opening.
Total door width will be 36.
The height is a bit trickier based on the casing and header.
Since there are two doors the door width has to be at least half of the opening and even more so if you want them to overlap.
Remember barn doors need to slide at least as far as the opening in one direction or the other.
Barn doors should overlap openings by at least an 1 preferably 2 on each side.
Barn door measuring guide.
Measure from outside to outside of casing molding.
You re better off just putting the slats together and seeing how wide they are when you add each full slat to the set so you don t have to end up ripping one to size.
Add 4 to the measurement and you have your recommended door width.
To have privacy the door usually overlaps the opening by an inch so that a 2 6 opening will require a 2 8 door.
Sheetrocked opening no trim or casing width.
This means on one side of the door opening or the other there should be at least 2 8 and perhaps a little more to ensure all the hardware can fit properly.
If the door will be replacing a bathroom door or another room that requires privacy then you might want to consider a greater overlap.
Or if you like the look of a wider door you can overlap as much as you want.
To figure out what size track you need double your final width measurement.
Your door s width should be 2 to 3 inches wider than the door opening and 1 inch higher than the dimensions of your opening.
Again for doorways with moldings measure from the top edge.
While the style of barn door you choose will come down to your personal preference you will need to be aware of barn door vs opening dimensions when making your choice.
Measure across for the width and from the top of the casing molding to the floor for height.
In this example the opening width is 32 4.