how to cover a corner window

Mastering Corner Windows: A Step-by-Step Guide to Covering Them

By William GarciaFebruary 28, 2026

Corner windows, with their unique shape and placement, can present a design challenge. However, with the right approach, they can become a stunning architectural feature in your home. In this guide, we'll explore how to cover a corner window, from choosing the right window treatment to installing it like a pro.

Before we dive in, let's consider the benefits of covering a corner window. Apart from enhancing your home's aesthetics, window treatments can provide privacy, regulate light, and even insulate your space. So, let's get started on how to make the most of your corner window.

Choosing the Right Window Treatment

Selecting the perfect window treatment is the first step in covering a corner window. The best choice depends on your room's style, functionality, and your personal preferences.

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Here are a few options to consider:

Blinds

Blinds offer excellent light control and privacy. They come in various materials like wood, vinyl, and aluminum, each with its unique look and durability. For corner windows, consider cordless or motorized blinds for safety and convenience.

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Shades

Window shades provide a soft, elegant look. They are available in fabrics ranging from sheer to blackout, allowing you to control light and privacy. For corner windows, consider cellular or Roman shades that can be mounted on the wall or ceiling.

Example: Cellular Shade from West Elm

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Measuring and Installing Your Window Treatment

Once you've chosen your window treatment, accurate measurement is crucial for a perfect fit. Here's how to measure and install your window treatment on a corner window:

Measuring

Measure the width and height of your corner window. For width, measure from the inside edge of one window frame to the inside edge of the other. For height, measure from the top of the window frame to the sill. Add 3 to 4 inches to both dimensions for proper fit and operation.

Installing

Installing window treatments on a corner window can be a bit tricky. Here's a simple method using brackets:

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Mark the bracket placement on the wall or ceiling, ensuring they are level and aligned with the window's width and height.
Attach the brackets using screws or bolts, following the manufacturer's instructions.
Attach the headrail or mounting hardware to the brackets, ensuring it's level and secure.
Install the window treatment's operating system (like cords, wands, or motor) according to the manufacturer's instructions.
Hang the window treatment, ensuring it's centered and operates smoothly.

With these steps, you're well on your way to covering your corner window beautifully. Don't forget to consider safety features like cordless or motorized options to protect children and pets.

Embrace the unique charm of your corner window. With the right window treatment, it can become a standout feature in your home, enhancing both style and functionality. So go ahead, transform your space, and let your corner window shine!