Bow Window Replacement Buyers Guide
What is a Bow Window?
Like similar bay windows, bow windows project from the exterior of the house, providing more natural light, ventilation, and space in any room, and adding curb appeal outside. Bow windows group your preferred combination of three to five double-hung, casement, and fixed (inoperable) windows into a single unit installed in your window opening. With as many as five windows, you can imagine how heavy a bow window can be! This type of window assembly requires a wide rough opening, and is often installed by tying into your home’s roof rafters for support. This is important to remember if you’re considering a bow window for the first floor of a two-story home. First-floor bow windows will often require additional framing built out to support the window from below.
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Benefits of Bow Window Replacement
Add elegant interest to your home with a classic bow window.
- Your preferred combination of double-hung, casement, and fixed windows
- Curved design adds space to any room, and lets in plenty of light and ventilation
- Interior is finished with an oak or birch seat, matching ceiling space, and wood sideboards
- Sets your home apart with classic architectural detailing.
Improveit’s Performax54 Bow Windows
When you design your custom bow window, you’ll be able to select up to five windows to join together in a single unit. No matter what combination of double-hung, casement, or fixed windows you choose, each one will feature our exclusive Performax54 benefits, including best-in-class frames, sashes, glass, and spacers to maximize your energy efficiency on top of the excellent style and functionality.
Window Design options
Performax54 Windows Are Available In These Colors

Exterior: White
Interior: White

Exterior: Beige
Interior: Beige

Exterior: Brown
Interior: White

Exterior: Clay
Interior: White

Exterior: White
Interior: Wood

Exterior: Beige
Interior: Wood

Exterior: Any
Interior: Any
Window Grid Design Options

No Grid

Colonial Grid

Diamond Grid

Prairie Grid
What’s The Difference Between Bow & Bay Windows?
Bow and bay windows are very similar and are most easily differentiated by their shape and the number of windows included. Bow windows can have three to five windows, while bay windows only have three. The larger number of windows in a bow creates a softer curve for the window unit, compared to more angular bay windows. Wondering if bow windows are outdated? This may help: bow windows are often selected for Victorian, Tudor, and even rustic-style homes, while bay windows offer look better suited to more modern homes. Learn more on our blog!
Will My Bow Window Installation Have Seating?
Yes! Improveit’s Performax54 bow windows feature an oak or birch bench seat for the reading nook, kitchen window seat, or extended living room seating you’ve always wanted. Because of their structure extending out from the home, bow windows also have a ceiling, which will be finished to match the bench. Opt for a can light fixture to add additional lighting to the ceiling of your bow window.