Add 4 to the measurement and you have your recommended door width.
Barn door measurements.
How to measure for a barn door in three steps.
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.
Barn door opening measurements 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.
Total door width will be 36.
In this example the opening width is 32 4.
Most barn door sizes fall anywhere between 36 wide on the shorter side by 96 tall on the longer side.
Ideally the door will cover 2 to 3 inches beyond the opening on each side.
Sheetrocked opening no trim or casing width.
Add 1 to 2 per door for overlap depending on privacy needs.
Do this by measuring from the left to the right side of the door.
Using a tape measure begin at the left edge of the opening and measure straight across to the right edge.
Measure the door width.
The average door width ranges from 24 inches to 36 inches.
Exterior door sizes may even be larger.
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.
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.
Measure from outside to outside of casing molding.