Window Replacement
Bay & Bow Window Installation on Long Island
Bay and bow windows transform a flat wall into a stunning architectural feature that floods your room with natural light and creates the illusion of additional space. A bay window uses three panels set at 30- or 45-degree angles, while a bow window uses four to six panels in a gentle curve. Both project outward from the exterior wall, adding a built-in window seat, display shelf, or reading nook. These statement windows are the centerpiece of living rooms, dining rooms, and master bedrooms across Long Island.
Key Benefits
Why Choose Bay & Bow Windows?
Adds Usable Interior Space
Bay and bow windows project 12-24 inches beyond your exterior wall, creating space for a window seat, herb garden, display area, or reading nook without the cost of a full addition.
Panoramic Natural Light
Multiple glass panels at different angles capture light from three directions throughout the day, brightening rooms that felt dark with a single flat window.
Major Curb Appeal Boost
A bay or bow window is an immediate visual upgrade to your home's exterior. Real estate professionals consistently rank them among the top curb-appeal improvements for Long Island homes.
Structural Support Included
Every installation includes proper structural support — steel cables, knee brackets, or a full support platform — engineered for the weight and wind load specific to your home.
Energy-Efficient Glass
Each panel features low-E insulated glass with argon fill. The head and seat boards are insulated to prevent thermal bridging, and the roof section is fully weather-sealed.
Custom Sizing & Finishes
We build bay and bow windows to fit your exact opening. Choose copper, aluminum, or shingled roofing, with interior wood seat boards in oak, maple, or painted MDF.
Our Process
How Your Installation Works
Design Consultation
We visit your home to evaluate the wall structure, measure the opening, and help you choose between a bay (3 panels) or bow (4-6 panels) configuration, roofing material, and interior finishes.
Engineering & Fabrication
Our team verifies structural requirements, orders the custom window unit, and coordinates any carpentry or framing needed for the projection. Lead time is 4-6 weeks.
Installation Day
We remove the existing window, frame the new opening if needed, install structural support, set the bay or bow unit, insulate, flash, and install the roof section and interior trim.
Finish Work & Inspection
Interior seat board and casing are finished, exterior is caulked and sealed, and we perform a water test to verify the roof drainage. A final walkthrough ensures your complete satisfaction.
Professional Installation
2,840+ windows installed across Long Island since 2011
Transparent Pricing
Bay & Bow Windows Cost on Long Island
Per Window Installed
$1,800 – $4,500
Whole-House (16 Windows)
$1,800 – $4,500
A standard bay window installation on Long Island costs $2,200-$3,500 including the window unit, structural support, roofing, insulation, and all trim work. Bow windows with 4-5 panels run $2,800-$4,500.
Exact pricing depends on window size, glass options, and installation complexity. Get a precise quote for your home.
Get Your Free QuoteFrequently Asked Questions
Bay & Bow Windows FAQs
Customer Reviews
What Long Island Homeowners Say
The bay window in our living room completely transformed the space. We went from a dark, flat wall to a bright, open room with a gorgeous window seat. The copper roof is a beautiful detail. WCLI handled every aspect of the project perfectly.
Susan R.
Rockville Centre, NY
Had a 5-panel bow window installed in our dining room. The amount of light that comes in now is unbelievable. The crew was meticulous with the trim work and the insulated seat board is a nice touch. Worth every penny.
Michael T.
Smithtown, NY
Free Estimate
Get a Free Bay & Bow Windows Quote
Tell us about your window project and we'll provide a detailed estimate within 24 hours.
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