Crown molding is one of the more difficult moldings to install. This type of molding is at the tops of walls along ceilings. It is used to add design and style to a room, and is most often found in dining rooms. Cutting crown molding can be the trickiest part. The key to proper installation is making the correct cuts and also telling which side of the molding goes where during installation.
Pick up the piece of crown molding that is going to be installed and hold it horizontally in either hand. The molding should be about 3 1/2 inches wide. Locate the thicker side of the molding. Feel the top and bottom to determine which side is thicker.
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Position a ladder where the crown will be installed. Climb up the ladder and place the molding in the first corner of the room. Put the thicker side against the top of the wall and the thinner side on the ceiling.
Hold it in place and look at the crown as it lies. Verify that the side against the wall has two grooves running across the bottom of the crown and the side against the ceiling only has one smaller line running across the crown.
Crown molding is typically cut in a miter saw upside down. It is turned so the bottom side, which has two small grooves running across, is standing up against the fence on the back of the saw. The crown molding is then slid into the saw and cut just like any other type of molding. It is then flipped over and installed right side up.
The crown will vary depending on the style, but the thicker side is always installed on the wall and becomes the bottom side. The thinner side always installs on the ceiling and becomes the top side.