The door bar is the last 90 centimetres of a flooring job — and the bit everyone forgets until the fitter asks. Choose the wrong one and you get a trip lip, a fraying carpet edge, or a doorway that ruins the look of two otherwise lovely floors.
The good news: choosing is easy once you know the one question that matters — what's meeting what in the doorway? There are really only four answers, and a different bar wins each one.
You need a double-sided gripper bar (also sold as a cover strip). Teeth on both sides bite into the two carpet edges, and a flat metal cap covers the join. This is the bar for a carpeted landing into a carpeted bedroom — the most common doorway in the house.
This join needs a single-edge bar — the "Z-bar". One side grips the carpet with teeth; the other presents a clean folded edge that sits neatly against the laminate, vinyl or LVT without trapping it. (Floating floors like laminate need room to expand, so the bar must never pin them down — one of those details that separates a tidy job from a creaky one.) There's also a double-Z version for carpet meeting carpet where both edges need that firmer grip.
Two jobs hide here, and the height difference decides which:
Standard bars are aluminium — light, tough and cheap, in silver, gold and bronze-effect finishes (a budget ali bar does most doorways perfectly well). Step-up options come in brass, brushed chrome, antique and matt black to match door furniture. Standard length is 0.9m — one bar per doorway, trimmed to fit.
A doorway should be invisible. If you notice the bar, something's wrong.
💡 Fitter's convention worth knowing: the bar sits directly under the closed door, so you can't see the flooring change from either room when the door is shut. If a quote doesn't mention door bars at all, ask — they should be itemised in any whole-job estimate, and they are in ours.
| The join | The bar |
|---|---|
| Carpet → carpet | Double-sided gripper / cover strip |
| Carpet → laminate, vinyl or LVT | Single-edge Z-bar |
| Hard floor → hard floor (level) | T-bar |
| Hard floor → hard floor (step) | Ramp / reducer |
A single-edge Z-bar — teeth grip the carpet on one side, a clean folded edge meets the laminate on the other. If the floors sit at different heights, use a ramp profile instead so there's no trip lip.
A double-sided gripper bar (carpet-to-carpet bar or cover strip) — teeth both sides, flat cap over the join.
Directly under the closed door, so the change of flooring is invisible from either room when the door is shut.
Every supply-and-fit quote we give itemises the door bars, gripper and underlay — the whole job in writing. Free measuring across Hastings, St Leonards & Bexhill.
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