Walls – How to install crown cornice molding and trim on rounded outside corners

finishingtrimwalls

We have rounded outside corners throughout our house what is the best approach to installing crown cornice molding?

The baseboards that are currently installed just come to a 90˚ point and the gap is filled in with putty, trim paint, mud, or combination thereof.

Any suggestions for a finely finished look to go with the rounded corners?

Best Answer

You can add a center section at the corner that runs at a 45° angle to either wall. That cuts down on any gap you might have, but makes the installation and cutting a bit more difficult. My house has a few faux pillars that use this technique:

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(I know, I know, I haven't gotten around to touch ups after we painted the walls...)

And here's a lookup table for cutting crown molding (source):

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