How to Put Crown Molding on Sloping Attic Walls

An attic that has been finished or remodeled into a living space can have crown molding added to the walls. Attic walls, however, are usually sloped because the ceiling of an attic is generally the roof of the house. When crown molding is installed, it needs to fit where the edge of the sloped wall meets the side wall. Crown molding can be put on sloping attic walls by making modifications to the pieces of molding.

Things You'll Need

• Tape measure
• Hammer
• Miter saw
• Finish nails
• Spackle
• Sand paper

Instructions

1. Measure the width of the attic wall with a tape measure. Make sure to measure all areas of the attic where crown molding will need to go. This will determine how much crown molding will be needed to complete the project.

2. Purchase crown molding at a home improvement store such as Lowes, or Home Depot. Crown molding can come in many different designs and sizes. Choose the type and design that will be best suited for the attic wall.

3. Cut the molding to fit against the wall. A sloped attic wall should have a 45 degree angle where it meets the side wall. Cut the top edge of the molding with a miter saw to create a 45 degree angle.

4. Place the crown molding on the wall, and attach it using finish nails. The crown molding should fit evenly with the slope on the attic ceiling

5. Fill in the nail holes in the crown molding with spackle. Wait 4 to 6 hours for the spackle to dry, and then use sand paper to smooth it out.

Tips & Warnings

• A miter saw can be purchased or rented at a home improvement store. A nail gun can make attaching the crown molding go much faster.

• If a wrong cut is made on a piece of molding, it will be unusable.