Diy Window Cornice Foam Board

Add 3 inches to each side of the measurement 6 inches total.

Diy window cornice foam board.

Measure the width of the window that the cornice will hang over. Measure the length of your window and add a foot to that. I used an exacto. Cut out the length and width of foam board.

Following the directions of the foam core board tutorials i built my cornices from my foam panels. In this way cornices provide a more structured window treatment option than valences do while also creating interest through the fabric that you use. This is the length your cornice will be including the side. Determine the height of the cornice and cut the foam board accordingly.

Set a straightedge across the foam board at the desired valance height. Work your way to the ends of the box snipping and folding at the corners where necessary. There is no hanging fabric. First you need to measure the width of your window and decide how deep you need to make your cornice board and how tall you want it.

Make the corners of your cornice by. Figure out the width that you want the cornice to be. For my kitchen window i needed a 46 width. Score the board with a utility knife.

On the other hand a cornice is a hard treatment. Instead a cornice is an upholstered board that is attached to the wall above your window. Starting in the middle wrap the batting fabric toward the back as tight as possible and secure in place with nails. How to make a cornice board valance from foam insulation 1.

This cornice is 11 inches high. Measure the outside width of the window including the frame or wood trim around it.