What door threshold means
The threshold is the strip at the bottom of a door opening that the door closes over, sealing the gap at the floor and bridging floor materials.
Also called threshold, saddle.
Where it matters on a window and door job
Adjustable thresholds and new door sweeps fix most drafts and water at entry doors. Pair them with weatherstripping as a quick comfort job.
What the model code says
- Doors other than the required egress door need landings or floors not more than 7 3/4 inches below the top of the threshold. (IRC 2021, Chapter 3)
Check which code edition your building department enforces for door threshold before you quote.
What it costs
Koira's door repair cost guide puts a typical job at $220, with most between $75 to $540. The guide shows its sources and what moves the price.
Work it out
- Cost guide: Door repair cost
- Tools, templates and guides: Free window and door resources
Sources: 2021 International Residential Code, Chapter 3, Building Planning (ICC). Checked October 9, 2026.