Double Hung
Casement
Single Hung
Round Top
Slider
Awning
Bay
Special Shapes
Bow
Single Hung Round Top
Front Doors
Sliding French Door
Outswing French Door
Inswing French Door
Bi Fold Patio Door'%3e%3cpath fill='none' stroke='black' stroke-linecap='round' stroke-linejoin='round' d='M29.94 20.83a9.95 9.95 0 1 0-15.62 8.15c.44.31.71.82.71 1.36v1.26c0 .46.37.83.83.83h8.28c.46 0 .83-.37.83-.83v-1.26c0-.54.27-1.05.71-1.36a9.92 9.92 0 0 0 4.26-8.15Zm9.11 0h-4.97m-33.14 0h4.97M34.05 6.77l-3.51 3.51M5.94 6.77l3.52 3.51M20 .94v4.97m4.14 29.83h-8.28m6.63 3.32h-4.97'/%3e%3c/g%3e%3c/svg%3e)
Knowledge Center
Why Fiberglass'%3e%3cpath d='M.71 21.02 19.09 2.64c.24-.24.57-.38.91-.38s.67.13.91.38l18.38 18.39m-5.14-5.15v19.3a2.57 2.57 0 0 1-2.57 2.57H8.43a2.57 2.57 0 0 1-2.57-2.57V15.87' class='prefix__cls-2'/%3e%3cpath d='M19.71 15.2a.63.63 0 0 1 .54-.31h3.13a.6.6 0 0 1 .54.32c.11.2.11.44 0 .63l-3.2 5.27H24a.61.61 0 0 1 .45 1.04l-7.81 8.29a.32.32 0 0 1-.4.05.3.3 0 0 1-.12-.38l2.58-6.52H16a.63.63 0 0 1-.54-.31.62.62 0 0 1 0-.62l4.25-7.45Z' class='prefix__cls-2'/%3e%3c/g%3e%3c/svg%3e)
Energy Efficiency'%3e%3cpath fill='none' stroke='black' stroke-linecap='round' stroke-linejoin='round' d='m14.34 23.35.9 2.44 2.4.91-2.4.91-.9 2.44-.9-2.44-2.4-.91 2.4-.91.9-2.44Zm8.26-13.4 1.8 4.87 4.8 1.83-4.8 1.83-1.8 4.87-1.8-4.87-4.8-1.83 4.8-1.83 1.8-4.87Zm-2.59 29.31C30.5 39.26 39 30.64 39 20S30.49.74 20 .74 1.01 9.36 1.01 20 9.51 39.26 20 39.26Z'/%3e%3c/g%3e%3c/svg%3e)
Care + Maintenance
Marvin Heritage
Why Marvin Replacement'%3e%3cpath fill='none' stroke='black' stroke-linecap='round' stroke-linejoin='round' d='M20 18.66c2.58 0 4.68-2.28 4.68-5.08S22.59 8.5 20 8.5s-4.68 2.27-4.68 5.08 2.09 5.08 4.68 5.08ZM20 .87c6.46 0 11.7 5.69 11.7 12.71 0 6.01-8.58 20.98-11.04 25.16-.14.24-.39.39-.66.39s-.51-.15-.66-.39C16.88 34.56 8.3 19.59 8.3 13.58 8.3 6.56 13.54.87 20 .87Z'/%3e%3c/g%3e%3c/svg%3e)
LocationsBAY WINDOW REPLACEMENT
Marvin Replacement Bay windows, made with Ultrex® fiberglass, feature three windows joined together to extend beyond the wall of your home. Consider a bay to fill your home with sunshine and fresh air.
MARVIN REPLACEMENT BAY WINDOW FEATURES
Insulated head and seat boards available in standard pine or optional oak for bay window seating
Center unit can come as a picture unit or a window that opens and closes
Capture natural light from multiple angles
Line Break
Get your project started by booking a free appointment with one of our design consultants.
WHY CHOOSE MARVIN REPLACEMENT BAY WINDOWS?
Strong Frame Material
Ultrex fiberglass is 8x stronger than vinyl windows to resist warping and shifting to protect your home.
Exceptional Stability
Ultrex expands 87% less than vinyl to resist leaks + seal failures for windows that open and close easily.
Design Flexibility
Customize your bay window with either casement or double hung windows to fit existing home style.
Charming Wood Interior Look
Select our EverWood® interior finish for the look of wood without the maintenance.
Fade-Resistant Finish
Our exterior acrylic finish stands up to 48,000 hours of sunlight.*
*(Average sunlight exposure based on 10 years)
Replacement Bay Window Design Options
Replacement Bay Window Styles
Marvin Replacement Bay windows harness the strength of our Ultrex fiberglass to project outwards from your home and make a room a focal point for extra architectural appeal.
Configurations
Our bay windows are available in three-window configurations. Choose casement or double hung windows in your bay window. Customize the projection of your bay window with 30° or 45° side windows. Our bay windows create a cozy nook where you can soak up sunshine while relaxing with a book or tablet. Top off the look of your bay window with pine or oak veneer head and seat boards to match your home's style.
Selected: Operating Double Hung Bay
Exterior Colors
Our finish stands up to the elements, so much so that 48,000 hours of sun can't fade our finish* and our fade-resistant acrylic finish resists scratches, chalking, chipping, denting, and peeling. Choose from seven stunning exterior colors to boost your curb appeal.
Selected: Stone White
Marvin's Ultrex® fiberglass finish is verified to the American Architectural Manufacturers Association (AAMA) 624 specification. Achieving AAMA 624 verification means that our Ultrex finish has passed rigorous tests that simulate the harsh conditions a finish can encounter throughout the life of a window or door.
*Average sunlight exposure per 10 years
Interior Colors
We use the same tough acrylic finish on our interior color options that we use on our exterior colors. You can also choose our stainable EverWood® finish for the look of wood without the maintenance.
Selected: Stone White
Finish samples are approximate. Schedule a design consultation for an up close view of color options.
Glass Coatings
Our experts will walk you through energy efficient glass options to find the right selection for your home and the best windows for your climate. Choose from four glass coatings, plus decorative glass options, and specialty glass choices.
Low E-1
Primarily used in colder climates, Low E1 allows more heat in to warm a room while blocking heat loss.
Low E-2
Low E2 offers year-round performance in moderate climates. It will help retain heat in your home during the winter and keep heat out during the summer.
Low E-3
Low E3 rejects solar heat while letting light in, resulting in increased performance in climates with intense sun exposure.
Low E-3/ERS
Low E3/ERS provides maximum efficiency year-round in all conditions.
Selected: Low E1
Decorative Glass
Decorative glass options are ideal for spaces like bathrooms to balance natural light and privacy.
Selected: Rain
Specialty Glass
We offer specialty glass to best suit the needs of your home. You can choose tempered glass, laminated glass, and STC/OITC glass for specific windows and rooms.
Tempered Glass
Tempered glass increases glass strength to help prevent breakage. Tempered glass is ideal for windows close to the floor or located in high-traffic areas.
Laminated Glass
Even more durable than tempered glass, laminated glass is often referred to as impact resistant or safety glass due to its vinyl inter layer that tends to remain in place when shattered.
STC/OITC Glass
Sound Transmission Class and Outdoor-Indoor Transmission Class glass has increased pane thickness on the room side and works in areas where exterior noise is a concern.
Divided Lites
We offer various divided lite patterns so you can replicate the look of your original windows and doors. Or, add new architectural interest to your home. Choose from Simulated Divided Lites for classic appeal or Grilles-Between-the-Glass for easy cleaning.
Casement windows can come with a Simulated Checkrail to create the look of a double hung window with the functionality of a casement. Patterns include: Cottage, Prairie 2-Wide, Prairie 6-Lite, Prairie 9-Lite, Rectangular, Prairie 2-wide 6-Lite, Simulated Checkrail, and Standard Pattern.
Selected: Grilles-Between-the-Glass
Hardware
Our tuckaway handle provides an uninterrupted view with casement bay windows and you can choose from eight different colors for your window’s hardware. You can also select our Clear View® hinge for maximum views.
Our casement windows come with a multi-point locking system to provide security, and seal out wind and weather.
Selected: Stone White
Screen Options
We have two durable aluminum-surround screen options that provide airflow while keeping insects out. Our standard Marvin Bright View™ fiberglass mesh has a clear view, sheds water, and resists dirt. Upgrade to our Hi-Transparency mesh screen for crisper views without losing any of our standard screen benefits. Color match your screen frames to the window for a seamless look.
Selected: Bright View Screen
Maintenance
To maintain bay windows, follow our glass cleaning guide and cleaning tips. Bay windows can follow the same cleaning guidelines as double hung and casement window cleaning, depending on which windows are featured in a bay window.
Frequently Asked Questions
Bay window vs. bow window?
Bay windows and bow windows have similar characteristics but a bow window has sharper angles than a bow window, which is arranged in more of an arc.
How do you clean a bay window?
You can clean bay windows in the same manner as our casement and double hung windows.
Do bay windows open?
Most bay windows do not have three operable units. Typically, the two windows on each end can open and close while the middle window remains fixed. We do offer a three-window assembly where all three windows can open.
What is a flat bay window called?
A flat bay window is also known as a canted bay window or a classic modern bay window because it features a flat middle window and side windows at an angle.
What are the benefits of a bay window?
Bay windows can add more natural light to your home and create bigger views. A bay window can make your home more architecturally appealing with its angled lines. Bay windows can also help increase ventilation with operable flank windows or by having all three windows operable. A bay window seat comes with insulated head board to create a reading nook in your home.
Do bay windows let in more light?
Bay windows can let more light in because you have a three-window assembly versus having just a single window or two windows next to each other.
Are bay windows outdated?
Like many trends, bay windows have fallen out of favor at times and gained popularity at other times. Designers tend to think bay windows have come back in style, especially with people seeking more ways to add natural light to their homes.
Added Assurance
Marvin Replacement windows and patio doors come with a limited lifetime warranty as well as a 5-year installation warranty to provide additional peace of mind.
Looking for More Replacement Window Information?
Discover additional benefits of Marvin Replacement windows and more for your home.
Best Windows for Air Circulation
Learn more about the best windows to improve air circulation in your home.
Windows to Improve Air Circulation
Fiberglass vs. Vinyl Windows
Discover the differences between fiberglass and vinyl windows, and why fiberglass windows have more strength.
Fiberglass vs. Vinyl WindowsSchedule Your Free Consultation
If you’re ready to get started, discuss your replacement window and door options with a design consultant. We’re here to answer any questions you may have, and help make your project easy.
