The height is a bit trickier based on the casing and header.
Hownwide should barn doors overlap.
This gives the even 1 1 2 around on all three sides.
Most barn door sizes fall anywhere between 36 wide on the shorter side by 96 tall on the longer side.
Remember barn doors need to slide at least as far as the opening in one direction or the other.
Overlapping tandem barn doors step 1.
Measure from outside to outside of casing molding.
If the doorway has moldings measure from outside edge to outside edge to determine the proper door width add about 4 to 6 inches to your measurement.
How to measure for a barn door in three steps using a tape measure begin at the left edge of the opening and measure straight across to the right edge.
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.
I used 6 cedar fence slats for all the wood parts of the doors.
To have privacy the door usually overlaps the opening by an inch so that a 2 6 opening will require a 2 8 door.
Most standard interior doorways are 36 wide.
Add two inches to your width measurement and now you have your ideal barn door height and width.
For the overlap on a single door you will add 3 to the inside width to size the door and 1 to the height from the floor to the top of the opening because there is a 1 2 gap under the door when installed.
30 opening 34 wide door.
Add 1 to 2 per door for overlap depending on privacy needs.
We recommend 1 1 2 to 2 of overhang on each side.
For a sheet rocked opening we recommend the door height be 1 2 larger than the opening.
Measure from inside to inside of the opening.
Again measure to the outside edges of the door casing.
Add 4 to the measurement and you have your recommended door width.
Total door width will be 36.
Measure across for the width and from the top of the casing molding to the floor for height.
Once hung the door will be another 1 2 off the floor for a total coverage above the door of 1.
Let the stain dry.
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.
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.
It s your choice of whether or not to stain all the pieces first or the whole thing after it s.