Bay and Bow Window Installation on Long Island
Custom-built bay and bow windows with structural support, proper flashing, and installation by our own crew. Free estimate.
EPA Lead Safe Certified | Free Estimates | 25+ Years | 4.9/5 (378 reviews)
Ready to replace your Bay and Bow Windows the right way?
Free written estimate. Fast scheduling. No subcontractors, ever.
SIGNS YOUR BAY OR BOW WINDOW NEEDS REPLACING
Signs you need a new bay or bow window
Bay and bow windows are complex assemblies with multiple panes, structural supports, and flashing. Problems show up faster than standard windows.
- Drafts or cold spots near the window seat area
- Water leaking at the joints between panels
- Fog or moisture inside the sealed glass units
- The seat board is soft, warped, or discolored from moisture
- The roof or overhang above the window is sagging
- Caulk and flashing around the exterior are cracked or missing
- Frames are rotting at the corners where panels meet
- The window does not open or close smoothly
If any of these sound familiar, call (516) 867-4100. We can usually assess the situation in one visit.
WHY CHOOSE US
Why Mikita Door & Window for bay and bow windows
Structural Support Included
We install cables, brackets, or knee braces to support the weight of your bay or bow window properly.
Flashing and Waterproofing Done Right
Bay and bow windows are leak-prone when flashing is cut short. We flash the head, jambs, and sill completely.
Custom Configurations
Three-panel bay, four-to-six-panel bow, casement flankers, picture center panels. Built to your opening.
One Crew, One Job
Our team handles framing, structural support, installation, flashing, trim, and cleanup. No subcontractors.
Brands We Install and Service
OUR PROCESS
From call to clean-up
Step 1: Consultation Call (516) 867-4100 or visit our showroom. Bay and bow projects start with a conversation about what you want the window to do for the room.
Step 2: In-Home Measurement and Assessment We measure the opening, inspect the wall structure, and determine what support system is needed for the projection.
Step 3: Custom Order Your bay or bow window is built to spec. Lead times vary by manufacturer and configuration, typically 3 to 6 weeks.
Step 4: Installation Our crew handles structural support, window installation, flashing, exterior trim, and interior finishing. We test every panel before cleanup.
OUR SERVICES
Bay and bow window services we offer on Long Island
Bay and bow windows add natural light, visual depth, and usable space to any room. They also require careful engineering and installation to avoid leaks and structural issues.
Three-Panel Bay Windows: A fixed center picture window flanked by two operable casement or double-hung windows. Projects outward at 30 or 45 degrees.
Four-to-Six-Panel Bow Windows: A curved projection made up of four, five, or six equal panels. Creates a wider, more gradual arc than a bay window.
Bay Window Replacement: Remove and replace an existing bay window assembly, including seat board, support system, flashing, and trim.
Bow Window Replacement: Replace a curved bow window with updated glass, frames, and structural support.
Bay/Bow Roof and Overhang Repair: If the roof panel above your bay or bow window is sagging, leaking, or rotting, we repair or replace it as part of the window project.
Seat Board and Interior Finishing: We build or replace the interior seat board and trim so the finished window looks complete from inside your home.
Call (516) 867-4100 for a free estimate on any window project.
FAQ
Common questions about bay and bow windows
How much does a bay or bow window cost on Long Island?
Bay and bow windows are more complex than standard replacements. A three-panel bay window with installation typically starts around $3,000 to $6,000 depending on size, material, and glass package. Bow windows with four to six panels run higher. We provide a free in-home estimate with all costs itemized.
How long does bay or bow window installation take?
Most bay window installations take one to two days. Bow windows with more panels or projects requiring structural framing work may take two to three days. We give you a clear timeline before the work begins.
What is the difference between a bay window and a bow window?
A bay window has three panels and projects outward at sharp angles, usually 30 or 45 degrees. A bow window has four to six panels arranged in a gentle curve. Bay windows create a more defined shelf or seat. Bow windows create a wider, softer arc. Both add light and space.
Do bay and bow windows need structural support?
Yes. The window projects outward from the wall and carries weight that the wall was not originally designed to hold. We install cables, brackets, or knee braces depending on the size and weight of the window to keep it secure for the long term.
Are bay and bow windows prone to leaking?
They can be if the flashing and waterproofing are not done correctly. The joints between panels, the head flashing above the window, and the connection between the roof overhang and the wall are all potential leak points. We flash every seam properly during installation.
Are your installers licensed and insured?
Yes. Mikita Door & Window is EPA Lead Safe Certified and fully insured.
Can you replace my bay window with a standard flat window?
Yes. If you want to remove the projection and go flat, we can frame in the opening and install a standard picture window, casement, or double-hung. This changes the exterior look of your home and may require siding work around the opening.
Will a bay or bow window improve my energy efficiency?
Yes, if the current window is old, drafty, or has failed seals. Modern bay and bow windows with Low-E glass and insulated frames reduce heat transfer significantly. The improvement is especially noticeable on Long Island, where energy costs are well above average.
Can I add a window seat to my new bay window?
Yes. We build seat boards as part of the installation. You can use the seat as a reading nook, storage, or display space. We can also build a deeper projection to give you more usable seat depth.
Do you handle the roof overhang above the bay window?
Yes. If your existing overhang is sagging, leaking, or damaged, we repair or replace it as part of the project. The overhang is critical for keeping water away from the window assembly, so we do not skip it.
Do not see your question? Call us. We answer every call. (516) 867-4100
Tap your city for local details and availability.
Freeport | Merrick | Baldwin | Bellmore | Wantagh | Seaford | Massapequa | Rockville Centre | Hempstead | Oceanside | Levittown | East Meadow | Babylon | West Babylon | Lindenhurst | Deer Park | Amityville