What is a rosette?
A rosette is a round, more or less rose-shaped ornament. In building the word carries two meanings: the decorative ornament — most often the ceiling rose around a light point — and the practical round cover plate around the fixing point of, say, a door handle or a pipe penetration.
1. The rosette as ornament
The decorative rosette is built from leaf-shaped elements radiating from the centre, like the petals of a rose. You meet it:
- As a ceiling rose, around the light point in a room. In older buildings modelled in gypsum or lime plaster; today usually pressed in polyurethane or polystyrene.
- On façades, carved in stone or built in moulded brick, as an accent in a wall, in a tympanum or terminating a cornice.
- In vaults, decorating the keystone or boss.
- On furniture and panelling, carved in timber.
The difference from a rose window is straightforward: a rose window is a window with glass in it; a rosette is solid.
Fitting a ceiling rose — practical points
- Size. Common diameters run from roughly 30 to 80 centimetres. As a rule of thumb, a rose can be generous in a tall room, but in a room with a low ceiling it visually presses the ceiling further down.
- Material. Gypsum gives the crispest profiles and can be plastered over, but it is heavy and brittle. Polyurethane is light, dimensionally stable, directly paintable and far easier to fit single-handed.
- Fixing. Bond with adhesive or dedicated coving adhesive, and support it while curing with two or three screws or a prop. Adhesive alone with no support is the classic reason a rose is half hanging off the next day.
- Setting out. Align the rose on the light point, but first check that the light point is actually central in the room. Always measure from two opposite walls; old rooms are rarely square.
- Cost. A simple rose in polyurethane or plaster usually costs from a few tens up to a hundred or so, depending on diameter, material and depth of moulding.
| Gypsum | Crispest profiles and can be plastered over, but heavy and brittle |
|---|---|
| Polyurethane | Light, dimensionally stable, directly paintable and far easier to fit single-handed |
2. The rosette as hardware and cover
The second meaning is purely functional: a rosette covers up wherever something passes through a surface.
- Handle rose. The round or square plate around a door lever, concealing the hole and the fixings. Its counterpart is the long plate or backplate, which carries lever and keyhole together.
- Escutcheon or cylinder rose. Around the keyhole or the profile cylinder.
- Pipe rose or collar. The ring around a heating pipe passing through a floor or wall. Important: it must be free to move. A pipe expands and contracts with temperature; a rose sealed solid will creak or crack the floor finish.
Related terms
- Ornament
- Rose window
- Render coat
- Keystone
- Cartouche
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