How to Make a Wooden Cornice Board

What You'll Need
Plywood (1/4 or 1/2 inch)
Carpenters glue
Medium-fine sandpaper
Small nails
L brackets
Roll wallpaper (7 inch)
Small can of paint and brush

Adding a wooden cornice board can do to a window what a window can do for your room. A window can open a new focal point of interest in your room with a stroke of the imagination. It could be a wonderful drapery, some exotic grills, and a patchwork of beautiful stained glass…or you can crown it with the artistic possibilities of the wooden cornice board. Let’s create this classic stunner that is making a comeback in many homes.

Step 1 – Do the Math

Measure the dimensions by carefully examining the location where you wish to set up the cornice board. Determine the correct proportions to make the installation blend with the overall layout of the room. As a rule, the cornice board must extend 4 inches from the wall. The ideal height of the front board is 7 inches, although some interior designers suggest that it should be 1/5 of the overall length of the curtain. You may opt for an open-top design or go with the traditional counter top. The latter allows you to put plants, small figurines, and such other decorative items you may want to display.

Step 2 – Prepare the Wood

Go for an inexpensive material like plywood. There might be a scrap lying around in your storeroom that you can use. It doesn’t have to be new because it will be covered anyway. Should you decide to buy the plywood, ask the hardware to cut them for you for a minimal fee. 

Step 3 – Put Them Together

Glue the side boards to the top board before attaching the front board. Wait for the glue to dry before putting them all together with the finishing nails. 

Step 4 – Finish

Use the sandpaper to carefully smooth out the edges. There is no need to finish the front, side, and top boards because they will be hidden from view.

Step 5 - Paint 

Paint the bottom edges, as well as the insides of the side boards. Use color that will complement the wall and blend with that of the wallpaper.

Step 6 – Attach the Wallpaper

Apply the wallpaper glue, then carefully lay the wallpaper starting from the left side. No need to cover the top board.

Step 7 – Install

Attach the “L” brackets at least 2 inches from the top of the window trim. Use as many brackets as necessary. When the brackets are firmly in place, attach the board by securing it to the “L” brackets with screws.

Using wallpaper as covering is only one way to decorate the cornice board. You can use fabric with your favorite print or graphics. Pin buttons, combine materials, play with colors since there is no limit to what you can do.  No wonder interior designers and architects are creating elegant homes with cornice boards as eye-catching centerpieces. As the mood catches on, you’ll be proud to show off your own unique creation.