How to measure a Trimmed or Case Opening Door ?



barn door measurement
  • Step 1 )
    Measure Width: In instances where casing is present we recommend building the door to the same size as the opening + casing + 3". Measure from the outside of the casing to the outside of the casing for the door width. (In this example the total width is 41″).
  • Step 2 )
    Measure Height: Height: For the door height we recommend measuring from the floor to the top of the casing + 1". (In this example the total height is 84″).


Important Tips

  • Tip 1 )
    In order to slide, we recommend mounting the door 0.5″ above the finished floor. This will ensure you have room to mount a door guide under the door without friction issues.
  • Tip 2 )
    Depending on the style of the door, don’t forget to note which way your new sliding barn door will slide. This may affect how the door is built as well as the handle location.
barn door measurement
barn door measurement



(need something more visual?)

How to measure a Sheetrocked Opening (No Trim or Casing) ?



barn door measurement
  • Step 1 )
    Measure Width: Measure from inside to inside of the opening. Add 3″ to the measurement and you have your recommended door width. (In this example the opening width is 34″ +3″). Total door width will be 37″)
    Why add 3″? The door will need to hang off the wall a couple of inches in order to slide. As a result, the door must be wider than the opening to eliminate sightlines from angles around the opening. In the example above involving casing, the casing already ‘frames’ the door and adds 3" inches of width to the door that will generously cover the opening. For sheetrocked openings you want to add the extra door width to accomplish the same result.
  • Step 2 )
    Measure Height: For the door height we recommend measuring from the floor to the top of the opening. (In this example the total height is 80" + 1" = 81″)


Important Tips

  • Tip 1 )
    Once mounted the door will hang ~1.5″ off the floor which will add the bit of coverage you need at the top of the opening.
  • Tip 2 )
    Depending on the style of the door, don’t forget to note which way your new sliding barn door will slide. This may affect how the door is built as well as the handle location.
barn door measurement