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1. Measure the Door Opening
(Finished Opening)
This is the area that the barn door will cover when closed.
- Width: Measure the width of the opening from one side of the finished trim (or wall edge) to the other. Do this is 3 spots (top, middle, bottom) and use the widest measurement.
- Height: Measure from the finished floor to the top of the trim (or the top of the opening). Measure on both the left and right side and use the tallest measurement.
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2. Add Overlap for Full Coverage
To ensure privacy and a complete seal, add to your measurements:
- Width: Add 2-4 inches to each side (total of 4-8 inches) so the barn door slab overlaps the opening. Standard overlap: 2" per side. Example: If your opening is 36", a 40" wide slab works well.
- Height: Add 1" above the opening to ensure coverage. Subtract 1/2" to 1" from the bottom to allow for floor clearance (especially if flooring varies).
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3. Final Door Slab Size
- Width = Opening width + 4"-6" for overlap
- Height = Opening height + 1" overlap - 1/2" floor clearance
