Crown Moulding Ideas for a Slanted Ceiling


Crown moulding, as it exist today, had its origin in ancient Greece. It was but a fraction of the entablature, or the horizontal mouldings and consisted of the architrave, the frieze and the cornice. Crown moulding came from the cornice portion of the entablature, which comprised of "a set of projecting mouldings with the uppermost element being the crown moulding, or cymatium," according to The Ultimate Guide to Crown Mouldings. When installing crown moulding in a home with sloped ceilings, you'll need several strategies for success.

The Transition

  • One way to install crown moulding on a sloped ceiling is to have a transition piece before the crown moulding. Because you would use more than one piece of moulding in this application, it's similar to the Greek cornice. You can either use a smaller piece of moulding or a piece of moulding that fits at the top of the wall and ends at the beginning of the ceiling's slant, then follow it with a full piece of crown moulding that fits against the first piece of moulding and attaches to the ceiling itself. This is the easiest method of installing crown moulding for a slanted ceiling, for it requires little cutting.

The Floating Crown Moulding

  • This method requires some cutting and planning. To install crown moulding on the slanted ceiling in this method, you'll need to cut little triangular wedges. These will fit behind the crown moulding, which will make the crown moulding looks as though it's going up and down or floating, versus following the slant of the roof.

The Leg

  • This idea is the most difficult method of installing crown moulding on the slanted ceiling. For this method, incorporate the triangular blocks in Section 2 but add a vertical piece above the crown moulding that makes the ceiling at that point resemble a more traditional ceiling (not slanted). The good news is that you don't have to use specialty lumber to create this leg. While it takes more time and is more difficult, this idea for installing crown moulding gives one of the most finished appearances to the ceiling.

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