Bay Window Installation
Add natural light, curb appeal, and usable interior space with professionally installed bay windows from Cosello Construction.
Custom Window Installation
Bay Window Installation & Replacement
Cosello Construction installs bay windows for homeowners across South Jersey, Philadelphia, and Delaware. Bay windows extend outward from the wall, creating a brighter room, a stronger exterior focal point, and space for a reading nook, display shelf, or expanded view.
Our team provides precise measurements, product recommendations, installation, insulation, weathersealing, trim finishing, and cleanup. We install premium products from Andersen and other trusted manufacturers.
Why Choose Bay Windows?
- Projecting design adds depth and architectural interest.
- Large glass area brings more natural light into the room.
- Side panels can often be configured for added ventilation.
- Interior projection can create a window seat, display area, or plant shelf.
Bay vs. Bow Windows
Bay windows typically use three panels arranged at defined angles. Bow windows use four or more panels to create a curved projection. Both can improve natural light and curb appeal.
Read our bay vs. bow window guideBay Window FAQs
What is a bay window?
A bay window is a projecting window unit, typically with three panels, that extends outward from the wall to add natural light, curb appeal, and usable interior space.
How is a bay window different from a bow window?
Bay windows usually use three angled panels with a more geometric look. Bow windows use four or more panels arranged in a softer curve.
Can Cosello replace an existing bay window?
Yes. Cosello Construction can replace existing bay windows and install new bay window units after measuring the opening and reviewing structural and finishing requirements.
Service Area
Proudly serving South Jersey, Philadelphia, and the Tri-State area.
New Jersey
South Jersey, Cherry Hill, Mount Laurel, Camden County, Burlington County
Philadelphia
Northeast Philadelphia, South Philadelphia, West Philadelphia
Delaware
Northern Delaware, Wilmington area
Ready for a Bay Window Quote?
Call (856) 317-1770 or request a free quote for bay window installation in NJ, PA, or DE.