Measure across for the width and from the top of the casing molding to the floor for height.
How to determine size of barn door hardware.
Barn door measuring guide for door openings with casing molding.
Take the above measurement of your door and double it.
For the door height we recommend measuring from the floor to the top of the casing.
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.
For example if you have a 30 opening you would order at least a 34 barn door.
Standard barn door sizes most barn door sizes fall anywhere between 36 wide on the shorter side by 96 tall on the longer side.
This will be the length of track you need at a minimum.
For example if you have an 83 opening you would order at least an 84 barn door.
All barn door hardware kits will have minimum and maximum requirements for each one of these size attributes so make sure that your door is compatible.
Measure the door opening add a few inches to this measurement about 6 inches or so depending on how much space you have and this will be the total door width.
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.
In this example the total height is 83.
If your doorway doesn t have a trim measure the width of the inside of the door frame from left to right.
Add 2 4 to this measurement so your barn door completely covers the entryway without drafts or slight openings.
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.
For the height of your barn door we recommend at least a 1 overlay.
The barn door you choose needs to be slightly larger than the opening of the door frame it will cover.
Measure from the outside of the casing to the outside of the casing for the door width.
Add 1 to 2 per door for overlap depending on privacy needs.
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.
The door s height width thickness and weight will all play a factor in the hardware that it will require.
In this example the total width is 38.
For the width of your barn door we recommend at least a 4 overlay.
Measure from outside to outside of casing molding.