How to Build and Hang a Window Cornice

Learn how to build your own wood window cornice box to dress up your window frame. Building a custom wood window valance is a great beginner building project!

See more of self-taught DIYer Jenny’s home and tips for beginning DIYers here — you won’t want to miss her beautiful kitchen and living room! Plus read how to install easy craftsman window trim around any window. 

DIY Window Cornice | detailed step-by-step photo tutorial to build and hang a window cornice

In my son’s room, the window is on the wall opposite the door. The window is the focal point of the room, the first thing you see. I dressed it up with a DIY window cornice. The cornice adds weight and visual interest. It’s also a decorative accent that adds a bold pop of color to the room. (I liked how it turned out so well, that I made similar cornices for my other sons’ rooms.)

DIY wood window cornice box, window treatment to hide curtain rod hardware

 

What is a Window Cornice?

A window cornice is

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