How to Install Crown Molding on an Angled Ceiling

Crown molding is a trim piece installed at the top of a wall where it meets the ceiling. When you have an angled ceiling, crown molding must be installed differently than on a flat ceiling. One way to install crown molding on an angled ceiling is to cut and install a wood filler. The molding is then attached to the filler to create molding that appears to be floating on the wall.

Step 1

Measure the width of the wall, where you want to install the crown molding, with a tape measure.

Step 2

Transfer the measurement to a piece of crown molding. Make a mark where it will be cut, using a pencil.

Step 3

Cut the crown molding to the needed length with a circular saw.

Step 4

Measure the angle of the ceiling with the angle tool. Open the tool and place it in the corner where the wall and ceiling meet. Look at the gauge or dial to determine the angle of the ceiling.

Step 5

Adjust the blade on the table saw to match the measurement you took in step 4.

Step 6

Place a 4-by-4 beam on the table saw and cut along the length to create a filler piece. The filler piece will be a small triangular section of the 4-by-4 the exact angle you measured in Step 4.

Step 7

Mark the location of the studs on the wall with a pencil after you've found them with a stud finder.

Step 8

Set the filler piece along the top edge of the wall where the ceiling and wall meet.

Step 9

Secure the filler piece to the wall with nails, using the nail gun. Drive the nails into the board where the stud marks are on the wall.

Step 10

Set the crown molding on the wall against the filler piece.

Step 11

Attach the crown molding to the filler piece with finish nails, using the nail gun.


  • If you do not measure the angle of the ceiling correctly, the wood filler piece will be cut wrong.