If You Need Help Picking A New Interior Threshold, Try Using Our Threshold Selection Guide
Interior Door Threshold Selection Guide
A well-fitting threshold makes the transition between rooms look finished and helps cover the joint between flooring surfaces. The best profile depends on your finished floor heights, the space you need to cover, and the shape of the threshold’s underside.
Start with the floor transition
Measure the doorway from side to side, the width of the flooring joint, and the height of each finished floor. Then compare the actual profile drawings. Flooring labels such as hardwood or tile alone cannot tell you which threshold will fit.
Overlap a higher floor edge
Compare Style 1, Style 2, Style 4, and Style 5.
These stepped profiles have an underside recess. Check whether the 1/4-inch or 1/2-inch recess fits the flooring edge, and choose a width that covers the joint.
Step down to a lower floor
Compare Style 3, Style C, and Style D.
Look at the slope, the high-end height, and any groove or shaped underside. Style D offers a broader sloping transition.
Join floors at similar heights
Compare Style 6, a T-shaped profile that covers the joint from above.
Leave enough room in the flooring gap for its center stem, including any expansion space required by the flooring manufacturer.
Add a raised doorway threshold
Compare the ADA Profile at 1/2 inch high and Style A at 3/4 inch high.
Both have sloped sides. Confirm the finished height will leave enough clearance beneath the door. For an accessible doorway, evaluate the complete installed transition, not the profile name alone.
Fit a straight edge on one side
Compare Style E at 3/4 inch high and Style F at 1/2 inch high.
Each has one straight edge and one sloped edge. Check how the straight side will meet the adjoining surface or a second matching threshold.
Fit tip: Floor materials vary in installed thickness. Compare the threshold’s cross-section with your actual finished floors, and maintain the expansion space specified for your flooring.
Understand the dimensions
Length runs across the doorway. Width spans the flooring joint. A listed height describes the wood profile; it does not automatically equal the change in floor height that the threshold can bridge. Check the underside recesses, grooves, and slopes before selecting a size.
Before you order
- Confirm your measurements. Note the doorway length, required coverage width, finished floor heights, flooring gap, and clearance under the closed door.
- Compare the profile drawing. Make sure both the top and underside fit the surfaces where the threshold will sit.
- Choose the available size. Review current widths and lengths on the linked style pages. Plan to trim and test-fit the threshold where appropriate.
- Finish the wood. These red oak thresholds are unfinished, so stain or paint them to suit the room and follow the finish manufacturer’s directions.
Shop interior door thresholds or use the linked styles above to compare drawings and sizes.