Building A Window Cornice Box

Using a square draw a straight line on the marks you made on the 1x8s.

Building a window cornice box.

Wider drapes need more. The length of the returns sides on the cornice boards depends on the width of the drapes. I cut my 1 x 8 common. Custom build your own window cornices for one fourth the price of store bought design the cornice to fit your home.

Download and print a cut list for building a window cornice. Then starting in the top and middle of your board wrap your batting and fabric around the header and pin into place. How to mount cornice box to wall. If you want a decorative edge on your cornice.

You will need almost one box for each board depending on the size of your cornice. Most windows have a header above them which means there is solid wood all across the window opening which is perfect for attaching the l brackets. When measuring the length. Plan the look of your cornice.

Will you stain it or. If you plan to paint your cornices poplar and aspen are. Use a circular saw or table saw to cut out. Diy wood window cornice box assembly step 1.

For the front and sides make 45 degree miter cuts where they. Design elements within your home should dictate the wood type molding style and. To mount the cornice to the wall use heavy duty l brackets. Select materials and collect key tools.

What trim if any do you want to use. How to build a window cornice overview for how to build a window cornice. Measure the interior width of the window and add four inches to the overall measurement. Cut the wood using a circular saw.

Follow the cut list to size the pieces. I cut all the pieces for my cornice first. For my cornice boxes i had a depth of 5 on the window blinds and 5 5 on the sliding door vertical blinds. Then mark two pieces of.

Cut the wood cornice pieces crown molding. I highly suggest ironing your fabric first if there are any creases in it. We did this step before building the cornice box because it was easier to maneuver the front piece as just a board than when it had all other kinds of phalanges attached to it.