Bay Window Curtain Guide: How to Measure, Choose Hardware & Style

INTRODUCTION

Bay windows have special beauty and architectural appeal. The abundant natural light and functional interior design make them a good option for every home. However, as a homeowner, dressing your bay windows can be very difficult because of the more technical approach. Their angles, curves, and sunlight exposure make it difficult to determine which hardware to choose, how to measure correctly, and which lining type will protect your fabric. 

With this guide, you’ll get a simplified technical roadmap for bay window curtain ideas. You will have the right hardware selection, measuring, styling, and installation process so you can confidently dress your bay windows and keep them looking good for years. 

Step 1 - The Layout Design: Inside vs Outside Mount

Inside Mount

The window treatment is installed directly inside the window’s frame, and the rod follows each angled section of the bay. It doesn’t make use of a straight rod but follows the already existing shape of the window. If you want an inside mount, you need enough space inside the window frame so the rod and the curtain fit properly, and the bracketing must be precise. This is a good option if you want a clean and minimalist look for the window. However, with this process, sunlight can more easily penetrate the edges. This installation process helps to maximize the room space and creates a cozy nook. If your bay window also has a decorative frame you want visible, the inside mount keeps it seen.  

Outside Mount

The window treatment is installed on the wall or trim outside the window frame. It is easier for bay windows that are not deep enough for an inside mount. It is also a great option if you want a covering that extends across the entire frame to create a blackout effect. An outside mount can hang in two ways. The rod can hang straight across the flat wall in front. It can also follow the bay angles when mounted on the wall above the frame. This works if you want the window’s decorative frame visible. An outside mount has better light control and minimizes light leakage because the window treatment extends beyond the glass. By mounting above the frame, you can create the visual effect of a larger window. 

Step 2 - Solving the Hardware (Rods & Corners)

There are various bay window curtain rod options, so you need to determine which hardware best suits your window. 

Hinged Elbow or Corner Connectors

When working with bay windows, hinged elbow connectors join two straight curtain rods at angles between 90 and 180 degrees. You don’t have to purchase custom curved curtain rods. The connectors can be single, double, or multi-hinge, depending on the required range of motion. They are installed by inserting the ends of two separate curtain rods into the connector and then tightening a central screw to lock the desired angle. It is cost-effective and looks like a normal curtain pole. Connectors are better when you’re using lighter fabrics and prefer visible hardware as part of the room design. However, with a corner bracket or elbow, the curtain rings cannot pass smoothly across it; they often stop at the joint. 

Note: If you use Hinged Elbows, you must use segmented panels (separate panels for each section)  because standard rings cannot pass over the corner joints. You cannot use a continuous draw (one big curtain)

Hand-bendable tracks

These are flexible aluminium or PVC tracks that you manually bend at home to match the shape of the bay window. They can be bent by hand or with a bending tool, but must be done carefully to avoid kinks. Instead of rings, these tracks use gliders around the bends, allowing the curtains to be fully opened and closed. The bent track is fastened to the ceiling or wall with brackets and supports, ensuring it retains its custom shape over time and can support the weight of the curtains. Tracks are better when you need a single continuous curtain panel and smooth movement, especially with heavy blackout/thermal linings.

Pre-curved tracks

These tracks are factory pre-curved to common bay types, including 3-sided, 5-sided, and bow windows. They come in fixed shapes and are strong and durable for standard bay windows. All you have to do is install the track; no bending required. They also include gliders that allow the curtains to move smoothly around the curve. However, they are not suitable for uneven or custom bay angles. 

Segmented Panels vs Continuous Draw 

Segmented panels are the individual sections of a bay window. They are separate panels joined at various angles, each framed individually. You can assign separate panels to different window sections, allowing you to control each section individually. They are best if you want flexibility and better light control. They also give a traditional, elegant look. They are easier to maintain and are more cost-effective. Also, when your wall or window structure doesn’t allow a curved or continuous glass, segmented panels are better.

Continuous draw is better suited to modern, smooth design and uses a single curtain for the windows. This pattern also provides a full view and allows more sunlight in. The curtain's smooth flow also looks clean and finished. If you don’t mind a higher cost, then continuous draw is for you. 

Step 3 - Defeating the Sun Trap: Why You Need Lining

Bay windows have more glass than a standard window structure and project outwards from the main wall of the house. With multiple angles, sunlight can penetrate from different areas, unlike light from a single source. However, this means that your unlined curtains are more exposed to UV rays and can fade quickly. It also traps more heat, making the space feel even more uncomfortable. Lined curtains for sun protection are essential to prevent fading and exposure to sunlight. This lining blocks a certain percentage of sunlight from entering the room, reflects sunlight outside, and protects your curtains from fading quickly. It also helps absorb harmful UV rays that would otherwise enter your space. 

However, you don't need to buy special thermal curtains or blackout liners when purchasing curtains for your bay windows. Our custom blackout/privacy lining options are available on all curtains to protect against sun damage and heat. You can choose any fabric you love on our site and simply select 'Add Lining' at checkout for instant protection and insulation. Also, with our Pre-washed service, your curtains don’t shrink, and you get the precise lengths you want. 

Step 4: Inspiration For Styling Your Bay Window 

• The Romantic Window Seat: Use floor-length panels to frame the bay on either side of the window, creating a dramatic, romantic effect. Install Roman shades inside that can be drawn for privacy or rolled up to let in light. You can add a window seat or bench in the bay itself to make the space cozy and inviting.

• The Modern Minimalist: Use tailored pleat curtains on a sleek track for a clean, modern look. Install an elegant, minimal track that follows the bay window’s shape to avoid bulky hardware. You can also choose neutral tones for a minimalist aesthetic.

• The Layered Look: Layer sheer curtains inside the bay window to filter sunlight during the day and lined drapes on top for privacy and darkness at night. You can also use light sheers for brightness, heavier drapes for elegance.

FAQs

How do I measure for a bay window?

To get accurate measurements for your bay window, use our measuring guide to avoid mistakes and assumptions. 

Can I use a regular rod?

Regular rods usually won’t work for bay windows; corner elbows are recommended.

Achieving Beautiful Bay Windows

Installing bay or bow windows can be overwhelming and intimidating due to the technical processes involved. By carefully following these steps, your bay windows can look stunning and remain durable for years.