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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!

Keith Schneerer

Written by Keith Schneerer

Certified Appliance Tech · Founder, RemoveAndReplace.com

Keith has spent 30+ years repairing machines, starting as a military mechanic and later maintaining food processing equipment before moving into appliance repair. He founded RemoveAndReplace.com to share field-tested repair advice.

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8 thoughts on “How To: Make Your Own DIY Cornice Window Treatment For Less Than $20 Dollars”

  1. 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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