Determine the install angle of your actual molding.
Crown moulding on angled wall.
It s easy to get confused and cut the angle backward.
How tilted it is when it attaches to the wall crown typically comes in three spring angles.
If using a compound miter saw set bevel angle to 0 no bevel on an inside corner the top of the molding will be shorter.
My molding was the 52 degree variety.
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Every time you cut a miter whether for coping or outside corners you ll set the crown molding upside down against the saw s fence.
45 miter for 90 walls.
38 45 or 52 degrees.
Putting crown molding on sloped attic walls written by laura apel on aug 12 2009.
To avoid mishaps hold the crown molding up to the corner and draw a slash showing the direction of the cut photo 11.
Rest bottom of molding against the fence and top of molding against table.
Using a power miter saw is the best way to cut crown moulding angles.
The best way to do it is to make a small transition piece of crown molding that acts like the crown is being installed on a flat ceiling on one side of the piece but on the other edge it is making a transition as if the crown molding is climbing a stairway making the bend that happens as you transition from the sloped ceiling along the stairs to the flat ceiling below or at a flat landing.
On an outside corner the bottom will be shorter.
It s a best practice to cut crown moulding upside down on the miter saw.