Cut a piece of cove with a 45-degree miter at the end that will go in the corner. Position the miter so the long point is on the back of the molding. Using a coping saw, cut the front edge of the miter along the molding profile revealed by the miter, angling the saw about 5 degrees to make a slight back cut. If the blade binds, back out the saw and cut in from the edge to make a relief cut, then start again. When the whole profile is cut, check the coped piece against the molding on the back wall to be sure it butts tightly. Then cut the piece to length and nail it in place. Repeat this process on the other wall.
If necessary, install cove molding along the bottom of the wall in the same manner.
More in Living Spaces
2- or 4- foot level
Compass or square
Jigsaw to trim cedar planks
Pneumatic brad nailer and compressor (rents for about $55 a day)
Miter box and handsaw to cut molding
Coping saw to fit molding at the corners
Order online or through home centers. Choose lengths that will eliminate the need for joints, or use smaller boards for a patterned look
2. CEDAR MOLDING
to cover gaps at the top, bottom, and corners of the closet. Most manufacturers make cove molding to act as crown and to cover gaps at the floor. Optional corner bead will hide seams between walls
3. 18-GAUGE BRAD-POINT PIN NAILS
for use with a pneumatic brad nailer
to give additional wall adhesion and keep boards from bowing