How to Make a Closed Curtain Cornice

Mounting a wood cornice along the upper edge of the window gives it a dramatic facelift and instant appeal. Not only does this window treatment serve decorative purposes, but it conceals unsightly drapery rods and provides shelving space for collectibles and decorative items. Even if the curtains on the window are always drawn closed, constructing a box-like cornice gives the room decorative detailing and makes the windows pop out. Use poplar or aspen if you want to paint the cornice or oak for naturally stained options.

Tape measure
1-inch by 8-inch lumber
Miter saw
Wood adhesive tube
Handsaw
Wet cloth

Instructions

- 1
  Measure the width of the drapery rod and add 1 inch to the measurement before noting it. Draw the curtains open and measure their thickness from the wall for the depth of the cornice. Add 1 inch to the depth and note the measurement.
- 2
  Measure and mark the width of the window on the lumber. Set the miter saw at 45 degrees and cut each end of this front piece at the angle. Cut an end of a depth or side piece at 45 degrees. Reset the saw to 90 degrees and cut the other end of each depth piece to the noted length. Check that the two sides are identical.
- 3
  Apply a straight bead of wood glue over a beveled end of the long board. Align the mitered edge of a depth piece against a glued end of the front piece before pressing it against the adhesive. Hold the board for two to three minutes to help the glue set. The mitered ends of both the boards join to form an angled corner with a tight seam. Repeat the process of joining the other depth piece to the other beveled end of the front. Leave the glue to dry according to the recommended time.
- 4
  Cut a board to match the length and width of the opening at the top of the cornice. Dry fit the board over the cavity to check whether it rests flush over the upper edges of the front and depth pieces. Trim this board to size until it fits snugly over the boards. Remove this board for the top of the cornice and set it aside.
- 5
  Spread a bead of wood glue over the edges of the cornice on which the top board will rest. Maintain a steady hand so the glue does not spread over the front or side boards.
- 6
  Place the top board over the glued edges immediately. Press the board to help the glue set and form a strong board. Wipe excess glue that drips over the edges of the wood with moist cloth. Allow the glue to dry before priming or painting the closed curtain cornice.

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Windows, Doors & Walls