How to Install Crown Molding on a Cathedral Ceiling

Crown moldings provide more detail and style to a cathedral ceiling. Many homeowners prefer to have cathedral ceilings in their homes because it makes a room feel very spacious. There is a lot of overhead space with its distinctive, arched design that has a lot of appeal; however, they can also make a room look cold and impersonal. Crown moldings can provide the detail to make a room with a cathedral ceiling seem less stark. The crown moldings can be installed by homeowners on their cathedral ceilings; while doing this is not exactly easy, one can install crown moldings with the right tools and materials.

Step 1: Measure the Crown Molding

The first step in installing a crown molding is to measure the ceiling slope; measuring the ceiling slope is important for any kind of ceiling whether horizontal or cathedral. An angle measure tool that is similar to a protractor is used in measuring the ceiling slope; it has two rulers linked by a hinge joint. Put one side along the wall, or underneath the area where the wall intersects with the ceiling. Then move the other side until it is close to the ceiling. Take note of the angle measurement as seen in the dial of the angle measure tool’s hinge: this is the angle of the ceiling slope. Checking on the slope every two feet in the same way along the area where the wall and ceiling intersects is also recommended.

Step 2: Cut the Moldings

After taking note of the angle of the ceiling slope, it is now time to cut the moldings and ensure that they fit the ceiling. The lower edges of the crown moldings are to be put against the ceiling and the wall so that the angle of the cut moldings should enable the bottom part to be placed flatly. There are instances when little differences in the angles can suffice, but for best results, it is always recommended to cut the moldings as close to the flush. Proceed to cut the lower part of the moldings to the angle of the ceiling slope; use the miter saw to cut the molding pieces into the right angles so they can fit to the joint of the ceiling and the wall. The molding pieces should be fit in the same way as in installing in a horizontal ceiling; making a few tries may be done in order to get the right angle.

Step 3: Installing the Corner Joints

Joints are a bit more complex in cathedral ceilings because of their non-perpendicular nature. The crown molding joints will lie flat on the wall and ceiling, and they need to have sharper angles. Since the crown molding pieces are slanted at a sharper angle, the angle of the joint cuts has to be increased. A good way to accomplish this is to use the miter saw, setting at a 90 degree angle the cutting blade.

Drill small holes into the molding pieces before nailing them to prevent splitting. Drive the nails into the wall studs, leaving enough space to enable removal when needed; make some adjustments in the corners. Make sure everything is in place before driving the nails home. Use wood filler to cover the nail heads.