What is a porte-brisée?
A porte-brisée is a double door between two adjoining rooms whose leaves can be thrown fully open, so that the two spaces run into one another. The French porte brisée literally means “broken door”: the door is divided into parts rather than being one solid leaf.
Anyone who knows Dutch or Belgian townhouses knows the element: a front room and a back room separated by a richly moulded double door, flanked by fitted cupboards and often with a fanlight above. That arrangement is called an ensuite; the porte-brisée is the door within it. The nearest British equivalent is the pair of folding or sliding doors between a Victorian front and back parlour.
How it works
- Two leaves. Two door blades closing against each other, usually without a mullion, with a rebate or a cover bead over the joint.
- Folding leaves. In the strict sense of “broken”, each leaf consists of two narrow panels hinged together that fold back against one another. You then need only half the swing radius — useful in a narrow room.
- Cupboard wall. In the classic ensuite there are fitted cupboards to left and right, into which the opened leaves disappear.
Points to watch
- The door is not structural — but the wall around it often is. Widening the opening calls for a lintel or steel beam and a structural engineer.
- Nothing is square. Front and back rooms in old houses are rarely exactly the same height. Measure the opening at four points before ordering anything; a centimetre of twist is entirely normal.
- Sound. A porte-brisée is a light division with plenty of gaps. Do not expect real sound insulation between the rooms; closing the doors in winter does, however, make a noticeable difference to perceived temperature.
- Restoration is worth it. Original panelled joinery with period mouldings is close to unaffordable to reproduce. Have it repaired, rehung and repainted. For a complete ensemble of doors and cupboards, expect a bill running into several thousand pounds or euros of skilled work.
- In a listed building an ensuite is usually protected interior joinery. Check with the local authority before altering anything.
Related terms
- Folding door
- Ensuite
- Panelled door
- Fanlight
- Period property
- Door frame
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