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A Curved Transition Where the Wall Becomes the Ceiling

The opposite of adding a cornice: the wall-to-ceiling corner is removed and replaced by a radius, so the two planes read as one enclosing surface and nothing marks where one becomes the other.

Spaces:BedroomLiving roomHallwayBathroomHome cinema or media room
Style:MinimalistContemporaryCalmArt deco

Where this idea works

Where this idea works

Contexts this direction tends to suit — and, honestly, where it may not.

  • Rooms wanting a soft, continuous envelope rather than defined separate planes
  • Spaces where light is wanted turning the corner without a shadow line
  • New linings where the radius can be formed as the ceiling is built
  • Rooms with few interruptions at ceiling level for the curve to negotiate

Where it may not fit

Where it may not fit

  • Rooms with tall joinery, door heads or windows arriving at the ceiling line
  • Period rooms where an existing cornice is part of the character
  • Owners wanting a crisp, defined edge between wall and ceiling

Planning

Planning considerations

  • Removing the junction removes the line that used to hide the tolerance, so the radius has to stay consistent along its whole length
  • A radius cannot be patched invisibly, and a local repair shows as a flat in the curve
  • Internal and external corners of the room are where a radius is hardest, and those meetings are designed rather than improvised
  • The curve takes a little from both the wall and the ceiling, so the room's apparent proportion shifts

Layout

Layout considerations

  • Carry the curve continuously round the room, since a cove that stops reads as unfinished
  • Decide what happens where door heads, window heads and joinery arrive at the curve before committing
  • A matt finish keeps the curve reading as one surface, while a sheen shows every undulation
  • Uplighting a coved room from below turns the corner smoothly and makes the move visible

Materials & finishes

Materials and finishes to discuss

Named generically as starting points to discuss with professionals — not specifications, and not priced.

Consider:Plaster on a formed backgroundCurved plasterboard or formersPlaster beads and edge profilesDrylining metal framingConcealed linear lightingMatt paint finish
  • The radius shows deviation under raking light more clearly than a flat plane does
  • Movement between wall and ceiling has no joint to appear in and will appear in the curve

Maintenance & durability

Maintenance and durability questions

  • A curve cannot be cut in against, so redecoration becomes one continuous operation
  • Local damage usually means reforming a length of the radius rather than filling a mark

Professional review

What to ask a qualified professional

Bring these questions to a designer, contractor or the relevant qualified professional or authority.

  • Can the radius be formed continuously in this room, including at its corners?
  • How do door heads, window heads and joinery meet the curve here?
  • What movement between wall and ceiling is expected, and where would it show?
  • What finish would a professional plasterer advise so the curve reads as one surface?
  • How would damage to the curve be repaired later?

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