Again for doorways with moldings measure from the top edge remember the track will be installed a few inches above the opening so you will need to factor that in.
Barn door height above opening.
For a sheet rocked opening we recommend the door height be 1 2 larger than the opening.
I know that people typically extend the header to encompass the full length of the rail.
How much clearance is needed above the opening.
This is to be used as a guide only.
In order to slide we recommend mounting the door 1 above the finished floor.
30 opening 34 wide door.
You can hang your door as high to the ceiling as you want or as close to your opening as you like it is all design preference.
And measure from the top of the opening to the floor for height.
For a standard single door first account for any casing around the opening.
If you replaced an old door with a sliding barn door don t throw it away.
Standard barn door sizes most barn door sizes fall anywhere between 36 wide on the shorter side by 96 tall on the longer side.
The height is a bit trickier based on the casing and header.
This will ensure you have room to mount a door guide under the door without friction issues.
You will need a minimum of 6 between the ceiling or crown molding and the top of the door molding or opening for the hardware to mount depending on the style hardware that you choose.
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.
Once hung the door will be another 1 2 off the floor for a total coverage above the door of 1.
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.
When closed over the opening the door will cover all of the casing for a cohesive look.
Add 2 to 4 per door for overlap depending on privacy needs.
You also need the door to hang to 1 inch above the flooring to ensure smooth operation.
The graphic below simulated a door over the opening.
I m going to install a sliding door on a master ensuite closet opening.
The door width should be 2 inches wider than the opening or at least as wide as the full opening plus any casing.
For our standard barn door hardware you need 6 inches of above opening clearance.
The opening will have full trim with 3 5 side casing and a 5 5 header see pic for an example of another door trimmed the same way.
For the height of the door measure from the finished floor to the top of the opening or to the top of the casing.
Barn door measuring guide.