Easy DIY Window Cornice Box (How to Make a Cornice for a Window in 1 Hour with How to Build Tips)

Sharing all my tips & tricks for how to build a beautiful DIY window cornice box in under an hour. The DIY project was very easy to make & I made it for FREE with left over materials we had in the house!

Easy DIY Window Cornice

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We have needed privacy in the laundry room for a while & I decided a DIY window cornice would be perfect because it would look clean & nice & hide our cheap mini-blind beautifully.

It would add some more color to the laundry room & would give us some much needed privacy.

You never know when you have to iron something in a hurry!

Supplies & Tools Needed to Build a DIY Window Cornice

• Wood to fit window – I used extra scrap wood we had in the garage for the base. I chose some cedar 1×6 that we had leftover from our fence because they have rounded corners and are beefy so I wouldn’t need too much batting and they are 6 inches wide which is what I wanted my cornice to be.
• Fabric and Quilt Batting – I used scrap fabric and batting I had in my fabric bin to cover the cedar
• 2 L Brackets
• Other supplies you may already have:
a saw, a tape measure, screws, screw driver, scissors, staple gun and staples

With the exception of fabric and batting you can find all of these items at any hardware store.  

You can even cut the wood there if you don’t have a saw at home.

Step by Step Instructions for How to Build a DIY Window Cornice

Step ONE – Measure your Window

Measure the window trim width with a tape measure.

Step TWO – Pick Out Fabric & Gather Supplies

Pick out fabric that is tall & wide enough to cover the wood frame you are building for the DIY window cornice.

Step THREE – Cut the 3 Pieces of Wood to Build your DIY Window Cornice Box

Cut 3 pieces of scrap wood.
• one will be the width of the window including trim
• cut 2 side pieces (mine 2 1/2 inches long each)

Step FOUR – Screw the 3 Pieces of Wood Together to Create Your DIY Window Cornice

Use 2 screws for each side of the cut wood to attach the side boards to the outside of the long board.

Step FIVE – Add Your Quilt Batting & Staple in Place

Cut the batting to fit around the DIY window cornice.

I used quilting batting because I like how thin it is but you could use any cotton batting from a fabric store.

Step SIX – Iron your Fabric

Iron the fabric you chose to make sure there are no creases when adding to the batting & wood boards.

Step SEVEN -Place the Fabric for the DIY Window Cornice & Staple in Place

Lay fabric out just the way you like it & fold over fabric & batting in the corners and staple in place.

Make sure the fabric is smooth and there are no ripples showing!

Step EIGHT – Hang the DIY Window Cornice in Place

Hang cornice with L brackets and screws…you can simply nail this into the window molding

See… easy peasy!

 

Stand back and think about how crafty you are.

I hope this inspires you & answers all your questions for How to create a DIY window cornice for your home!