There are several varieties of windows to consider when replacing or adding new windows to your home. The Window Source of Delmarva offers several different styles including bay windows and bow windows. Both bay and bow windows offer added light and also a feeling of more square footage in your home.
What is a bay window?
A bay window is a great option to add more space to your home and make any room feel a bit larger. The bay window projects out from the wall of your home and it contains three window units. The middle window is parallel with the wall of your house. In most cases, the middle portion is a picture window giving you optimal views of your yard or scenery. The other two units are usually double-hung or casement windows. The bay window unit adds extra space where it juts out from the house. A bay window is timeless and a great addition to any room.


What is a bow window?
Similar to a bay window, a bow window also projects out from the house. Giving the illusion of more space inside and also offering a unobstructed view outside. The bow window usually contains three to six window united of equal size. The bow window forms a curve by combining the multiple window units. Ventilating casement units are typically selected in a bow window with an optional non-operating picture window as well.
What is a good location for a bow or bay window?
You have several options when you’re thinking about adding or replacing a bay or bow window. Any place in your home with a picture window has the potential for an incredible bow or bay window. Every window is custom-made and requires no structural changes. It is also cost-effective and will add a new dimension to the room and exterior of your home. You’ll enjoy feeling like your home has more space inside. The new window can also be tied into an overhang or installed with an optional roof assembly.
Bow and Bay Window Features:
- Multi-chambered 3 1/4 inch vinyl window frames
- Heavy-duty solid wood buck frame with steel mullion rods securely supports entire bow or bay unit
- Head and seat are 1-inch exterior grade plywood with birch veneer paintable finish or upgrade to stainable oak.
- Double-hung, casements and picture windows are available with an interior wood grain finish for a completely finished wood grain appearance
- Structure supports spacious projection for visual depth and utility
- Warm edge spacer system
- Exterior vinyl cladding is completely maintenance-free
- Can be built into exterior soffit area for protection and a finished look
- Optional shingle roof package
- Optional superior insulated seat board
- Meet Energy Star requirements with select glass packages

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Frequently Asked Questions About Bow & Bay Windows
What is the difference between a bay window and a bow window?
A bay window projects from the wall at sharp angles, typically with 3 panels a larger center pane flanked by two angled side units. It creates a defined nook inside. A bow window uses 3–6 equal panels to form a gentle curve, giving a more sweeping, panoramic view. Bay windows are more traditional in look; bow windows are softer and more elegant.
How much does a bay or bow window cost?
Most bay windows in the Delmarva area cost between $1,500 and $3,500 installed. Bow windows typically run $2,500 to $5,000 or more, depending on size and the number of panels. Larger custom bow windows with premium glass can exceed $8,000. The best way to get an accurate price is a free in-home estimate
Do I need to make structural changes to install a bay or bow window?
In most cases, no. At The Window Source, we install bay and bow windows into your existing window opening without requiring structural modifications. We can also connect the new window to an overhang or install an optional roof assembly if needed. Our estimator will assess your specific opening during the free visit.
How long does bay or bow window installation take?
Most single bay or bow window installations are completed in one day. Our crew arrives in the morning, removes the existing window, installs the new unit, seals and finishes it, and cleans up before leaving. Larger or more complex installs may take two days.
Can I replace a picture window with a bay or bow window?
Yes, and this is actually one of the most popular upgrades we do. Any flat picture window in your home is a candidate for a bay or bow replacement. It’s a cost-effective way to dramatically change the look and feel of a room without a room addition.