Installing Cornices on Curved Walls

When faced with curved walls often found in two story homes our "Stepped Curve" offers a pleasing alternative to omitting the second floor lobby entirely. This Stepped method gives the advantage of being able to compensate for any irregularity in the radius of the wall.

Calculating angles for curved walls presents several challenges, the radius angles at the top of the cornice is greater than the radius at the bottom.  For this reason, even if we did have flexible rubber material available, it would not work.  The only method is to cut and test pieces 4 to 6" long one at a time, there is no miter chart for this, simply trial, error.

Some of the photos are of cornice just after installation and BEFORE painting. Once dapped, caulked and painted, the joints and the shading are less noticeable.