When one room gets new flooring and the next doesn't, the two floors rarely meet at the same height. A good transition makes that change safe and nearly invisible. A bad one becomes a tripping lip you notice every day.
THE MAIN TRANSITION TYPES
| Transition | Use When |
|---|---|
| T-molding | Two floors at the same height (e.g. LVP to hardwood) |
| Reducer | Going from a higher hard floor down to a lower one (hardwood to vinyl) |
| Carpet transition / Z-bar | Hard floor meeting carpet |
| End cap / square nose | Floor ending at a sliding door, fireplace hearth or tile edge |
| Threshold / saddle | At exterior doors or between bathroom and hallway |
| Flush transition | Floors installed to match exactly, no molding |
HOW BIG IS TOO BIG?
- Under 1/4 inch: most transitions handle it neatly.
- 1/4 to 1/2 inch: a reducer or beveled threshold.
- Over 1/2 inch: ramped transitions or adjusting one floor's underlayment. Large height jumps are trip hazards, especially for older adults.
WHY NEW FLOORS SIT HIGHER
- Installing over old flooring instead of removing it (LVP over tile adds the full tile thickness)
- New cement board and tile in a bathroom
- Self-leveler poured to fix an uneven subfloor
PLANNING AHEAD
Before new floors go in, check what they'll meet at every doorway, stair nose and exterior door. Sometimes removing the old floor instead of overlaying it is cheaper than solving a 3/4 inch height difference later.
COST
Most transitions add $35 to $90 per doorway installed. Custom-milled wood thresholds or ramps run more, around $100 to $250 each.
For aging-in-place projects, we aim for flush or nearly flush transitions throughout the main living level. It's one of the cheapest fall-prevention upgrades there is.
RELATED READING
CAN YOU INSTALL VINYL PLANK OVER TILE?
When it works, when it doesn't, and how grout lines and floor height change the answer.
FLOORING INSTALLATION COSTS: DC, MD & VA (2026)
LVP, hardwood, tile, carpet — what flooring installation actually costs in the DMV, broken down by material and what drives your final number.
AGING-IN-PLACE BATHROOM CHANGES THAT ACTUALLY HELP
Grab bars, curbless showers, comfort-height toilets and lighting, with 2026 DMV costs for each.
Planning a project? See our Flooring Installation service page for scope, process and recent work.
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