How To: Make Your Own DIY Cornice Window Treatment For Less Than $20 Dollars

Custom cornice window treatments can be extremely expensive. In this tutorial we show you how to make a diy window cornice for about $20 dollars each. A window cornices are the square window covers at the top of windows that provide a very nice looking alternative to full drapes.

diy cornice window treatment
With a little creativity and a sense of diy style, you can make these window covers for much less than a professional company would charge you. You really only need a few types of common tools that most people already have.

To make your own diy Cornice Window Treatment you will need:

Builder’s Insulation Foam – 1/2 inch foam insulation, only $8 per sheet from Home Depot.
Duct Tape – To hold the builders foam together.
Batting – To go between the foam and the fabric.
Fabric – To drape over the builders foam.
Staple Gun – To staple the fabric and batting to the foam sheets.
Scissors – To cut the fabric and the batting material.

cornice window treatment diy _1

Here are the windows before the cornice window treatment was installed.

cornice window treatment diy _5

Here is the 1/2 inch foam insulation sheets we purchased. These work way better than wood! Lighter too!

cornice window treatment diy _3

The foam boards have been cut to size and we have secured it together with simple duct tape.

cornice window treatment diy _4

We then added the batting and fabric and used our staple gun to secure it to the foam boards.

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For under $20 bucks we added these to our new homes windows. Cheap, easy and anyone can do it!

ALLEN VETTER - DIY Repair Assistant
Allen is a Home Maintenance/Appliance tech and the author/creator of this website. He has 30 years of experience troubleshooting and repairing all types of machinery. Contact here

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{ 8 comments… read them below or add one }

1 Stephanie Smith June 9, 2015 at 1:49 pm

That’s a really cute idea! I recently moved into a new apartment, and the windows are pretty bare. I’ve been thinking of getting curtains, but I’m really liking the cornice a lot more. I’ll have to make a stop at the craft store and get a fabric that will match the interior of my home, thanks for the tips :)


2 Karen January 19, 2015 at 1:01 am

do you think these can be hung using Velcro command strips?


3 DIY Project Help Tips January 19, 2015 at 9:08 pm

If you use many of them, then yes we believe it would be just fine. Just make sure you are using the lightest materials possible for the Cornice.


4 sherrie January 18, 2015 at 5:16 pm

Did either of you try this and did you get them hung? Thanks


5 judy September 24, 2014 at 11:47 am

I’m confused as to how to hang them? I don’t see a top header to the cornice, which I’m sure you’d need to hang them.


6 Heather January 30, 2014 at 12:53 am

I’m wondering how you fasten it to the wall?


7 DIY Project Help Tips February 1, 2014 at 6:14 pm

Using drywall anchors will work if you determine the correct size. Also, using a stud finder can help to locate the wood beams in your wall and attaching with wood screws is a second option.


8 joe martin September 18, 2016 at 1:28 am

If your hanging over blinds that are outside mounts they will almost just sit on top of the rail. You can run a bolt through top of foam and through the rail hangers of the blinds. Simple “L” brackets work great to if just want to attach to the wall.


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