ProVia The Professional Way

Garden Windows in St. Louis

Want to bring more natural light, fresh air, and charm into your home? At STL Windows & Doors, we install beautiful garden windows in St. Louis that extend outward, creating a mini-greenhouse effect perfect for plants, décor, or simply enjoying a brighter space.

We specialize in custom garden window installation using premium ProVia windows, built for lasting performance, energy efficiency, and timeless appeal. Whether you want to showcase greenery in your kitchen or add extra dimension to another room, garden windows are a stylish and functional upgrade.

Unlike standard window types, garden windows project outward from the home, offering a shelf-like space that’s ideal for herb gardens, flowers, or decorative accents. Their side vents also allow for easy ventilation, making them both practical and visually stunning.

Ready for new windows? Request a free quote today and let STL Windows & Doors transform your home with a ProVia garden window.

Garden Window

GARDEN WINDOW KEY FEATURES

ProVia vinyl garden windows are designed to be energy efficient and highly functional, while providing a unique accent for your home

Window protrudes 17 inches from the exterior wall

Standard with a 1 inch ComforTech™ DC double glazed clear glass package

Upgrade to a 1 inch ComforTech DLA double glazed, low E coating with argon gas glass package

Top slope insulating glass (at a constant 35-degree pitch) is tempered for improved safety and unit integrity

Five privacy glass options available

Barely visible and damage resistant FlexScreen® window screen available with BetterVue® or heavy-duty fiberglass mesh

Garden Window Styles

We proudly install ProVia garden windows that combine natural light, and practical functionality. These windows extend outward from your home, creating a charming shelf space that’s perfect for growing plants, displaying décor, or simply enjoying more sunshine in your favorite room. For a deeper dive into features, costs, and design options, explore our guide, Everything You Need to Know About Garden Window Replacements.

For added versatility, garden windows include side venting windows that can be opened for fresh air, giving you both beauty and ventilation in one design.

Just like all of our custom ProVia windows, garden windows are available with a variety of options to fit your personal style. You can custom design a garden window that perfectly complements your home inside and out.

No matter your style or budget, ProVia offers a collection designed to meet your needs:

Endure

ProVia Endure Double Hung Window
Top-tier energy savings plus the broadest selection of vinyl and laminate finishes available.

Aspect

ProVia Endure Double Hung Window
A strong, energy-smart choice with modern frame construction and enhanced durability. Aspect windows deliver excellent efficiency and a sleek design that complements today’s homes.

DOWNLOAD WINDOW BROCHURES

Garden Window Colors and Finishes

Your new garden window should look as good as it performs. That’s why we offer a wide selection of colors and finishes to help you create the perfect match for your home. From sleek painted exteriors to the warmth of authentic woodgrain interiors, you can customize your garden window to complement any architectural style.

Color and finish availability may vary depending on the ProVia collection you select, but every option is designed to deliver lasting beauty with minimal upkeep. With our custom finishes, you’ll enjoy a garden window that enhances your home’s character while providing the durability and performance you expect in the St. Louis climate.

FOR INSPIRATION

WINDOW GALLERY

ProVia Garden Windows Deliver Exceptional Energy Efficiency

When it comes to energy performance and craftsmanship, ProVia sets the standard with some of the most efficient windows in the industry.

ProVia garden windows are engineered with advanced glazing, insulated frames, and precision construction to minimize heat transfer while keeping your home comfortable in every season. Even with their unique outward design, these windows maintain exceptional efficiency, reducing drafts and helping you save on energy bills.

The ProVia Endure® series is ENERGY STAR® certified and was recognized as one of 2024’s Most Efficient window lines by the EPA, proof of ProVia’s commitment to sustainability, comfort, and long-term value for your home.

Energy Star Most Efficient 2024 Award

WHAT CUSTOMERS SAY

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Jeff Gordon
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Peyton and Max installed 21 new windows and a new front door. They were a pleasure to work with, especially since we had other home improvement projects going at the same time. They did meticulous work and answered all of our questions.
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Mike Kelly profile picture
Mike Kelly
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I had a great experience with STL Windows and Doors. They we're booked up initially, but they still were able to setup an appointment and put me on the schedule. This company has great prompt customer service, fair pricing, and great professionalism. I would highly recommend their service.
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Anne Croy profile picture
Anne Croy
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Excellent service with initial sale and installation!! High quality product.
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Vivian Saied profile picture
Vivian Saied
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I used Stl windows and doors to replace half of the windows in my house and a sliding door. The whole process was excellent. From talking with Dan, the sale manager to the installers (Tony and his crew ) to Scheduling with Chris at the office. First of all, Chris was able to up my schedule date a week early upon my request. I'm sure he squeezed me in his tight schedule. I was very thankful. Tony and his crew were very professional, yet friendly and considerate. They were prompt on time the 3 days they came and very efficient. They took down my window treatments and put them back up again exactly the way they were. They moved furniture and put back. They took the time to explain how the windows opened from top to bottom as the windows had many options that my old windows didn't have. I would use them again and would definitely recommend them to my family and friends
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Elizabeth Purcell profile picture
Elizabeth Purcell
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Worth the wait! Price was insanely different from other bids for a single window replacement. Paid cash for a slightly better rate. Originally was going to need to wait 8 months for replacement but I got lucky & they fit me in at the 4 month marker since they had a cancellation. Customer service from Kaleb & Tony was outstanding. Both were very personable & made me feel confident that the job was being done well. Great warranty! Glad to check this off my list:)
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Aaron Fox profile picture
Aaron Fox
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STL Windows and Doors did an excellent job with our window replacement project. We live in an older home (over 100 years old) and we know there are going to be issues related to its age. The STL Windows and Doors team worked extremely hard with us to replace one of our bathroom windows that had begun to show signs of water damage. After the initial window replacement project was finished, we did communicate with their team about concerns we had with the original window frame that remained. Chelsea worked with us and a team (Tony and Caleb) came to our house within a week and replaced the frame as well. Their prices were reasonable and they had an array of choices. Overall, we highly recommend them for any window-related project you may have!
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Jake Bloomer
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Experience was great, STL W+D replaced our old rear door and transom with a new eight-foot unit. It’s great to have this huge pane of glass looking out over the back yard. Installers were great and clean and shimmied the door in without removing our old casing and messing with the plaster. They know what they are doing!
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Randall H profile picture
Randall H
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The removal of the old window and the installation of the new window went more smoothly than I would have expected. Peyton and Max were knowledgeable, professional, and completed the installation beautifully and efficiently. Both of them did a great job with making in the new window secure, sealed, and attractive.
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T Baker profile picture
T Baker
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Premium products and service at a more affordable price. Fantastic experience at every step of the process. Had some hail and tornado damage. Jared (sales) was friendly and knowledgeable about the industry. Did not hard sell, but instead provided a balanced and very detailed explanation of STL's products and services vs competitors, which felt trustworthy. Dan (owner) came out to measure the windows. My spouse said he was friendly and answered her questions. We got an unexpected scheduling break and installed much sooner than the expected wait. The installers, Peyton and Max, were friendly, efficient, and conscientious of our home. Their finish work (sealing and caulking) is better than the original for the house. They took the time to demonstrate all the features of the new windows and how to care for them. We all noticed a defect in the glazing inside one of the window sashes, which they immediately reported to the owner who, in turn, called me immediately about the manufacturer's quick replacement. Provia warrantees the vinyl, glass, hardware and screen of the window for life and this guarantee is transferable once to a new home owner. The installation has a 10-year guarantee. Also, STL has another business for window cleaning and screen replacement, which we're going to check out.
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Jessica Klemp profile picture
Jessica Klemp
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Great company to work with! We needed four hopper windows replaced on our garage/basement and STL Windows and Doors provided the best service and most competitive pricing. The work was done quickly and professionally, and everyone we met from the company was friendly. We would recommend calling them for your window needs!

Garden Windows vs Bay Windows

When considering a window upgrade, many homeowners compare garden windows and bay windows. While both extend outward from your home and add architectural interest, they serve different purposes and fit different needs.

Why Homeowners Choose Garden Windows

Garden Window

A garden window is essentially a small, outward-projecting greenhouse window. It’s perfect for adding charm and functionality to kitchens, breakfast nooks, or other cozy spaces.

Key benefits of garden windows include:

  • Compact Size – Typically projects about 18–24 inches, making it ideal for smaller openings or around countertops.
  • Functional Shelf Space – Built-in ledge is perfect for fresh herbs, flowers, or décor items.
  • Ventilation Options – Side casement-style windows allow fresh air into the room.
  • Increased Natural Light – Extends daylight into your space with multiple glass panels.
  • Everyday Charm – Adds character without requiring the space or structural changes of a larger window.

Why Homeowners Choose Bay Windows

A bay window is larger and more dramatic, projecting outward to create a seating area or alcove. They’re a great option when you want to transform a room with more space and architectural detail.

Which One Is Right for You?

  • Choose a Garden Window if: you want more light, airflow, and shelf space in a smaller area, especially in kitchens.
  • Choose a Bay Window if: you’re looking for a larger, dramatic design feature that expands both your view and your interior space.

Both garden and bay windows add charm, energy efficiency, and long-term value to your home. At STL Windows & Doors, we’ll help you determine which option best fits your space, style, and lifestyle needs.

Bay Bow Window Interior

WHY CHOOSE STL WINDOWS & DOORS?

STL Windows and Doors Team Installing Windows

Garden windows require precise installation to ensure they are properly supported, sealed, and energy-efficient. Because these windows project outward from your home, careful attention to framing, leveling, and weatherproofing is essential for long-lasting performance.

Our installers are factory-trained and certified, using advanced tools and proven techniques to make sure every garden window fits securely and functions flawlessly.

Whether you’re replacing an existing window or adding character to a new build, STL Windows & Doors makes the process simple, stress-free, and successful. As a ProVia Platinum Dealer and Certified Installer, we deliver the trusted quality and craftsmanship St. Louis homeowners deserve it.

We're a ProVia Platinum Dealer and Certified Installer

As a ProVia Platinum Dealer, STL Windows & Doors installs only top-quality products engineered for durability, beauty, and long-term performance.

ProVia garden windows are custom built to order using advanced materials that resist warping, fading, and moisture intrusion, making them a smart, lasting investment for your St. Louis home.

Every garden window is designed with insulated performance glass packages and heavy-duty vinyl frames that meet or exceed ENERGY STAR® standards, helping your home stay comfortable and efficient through every season.

10-Year Workmanship Warranty

As a trusted window replacement company serving the St. Louis metro, we make quality installation services our top priority. Every garden window project reflects our commitment to precision, performance, and professionalism.

Your satisfaction isn’t just a promise, it’s a guarantee. That’s why we back every garden window installation with a 10-Year Workmanship Warranty, giving you long-term peace of mind and confidence in your investment.

FAQs About Garden Windows

Below are some of the most frequently asked questions we receive from homeowners. If you don’t see your question here, please don’t hesitate to reach out.

Garden window prices can vary depending on size, materials, and installation details, but most homeowners in St. Louis can expect to invest anywhere from $1,500 to $4,000 per window installed. We provide custom quotes so you’ll know exactly what to expect before we begin.

Yes — garden windows add natural light, ventilation, and usable shelf space, while creating a charming focal point in your home. They’re especially popular in kitchens, where homeowners enjoy growing herbs or showcasing plants. With ProVia’s energy-efficient design, garden windows are both stylish and practical. Learn more about whether garden windows are a good idea in St. Louis.

A properly installed, high-quality garden window like those from ProVia is designed to resist leaks. However, poor installation or low-grade materials can lead to issues. We ensure professional installation and use only ProVia products, so you can feel confident your window will be weathertight and durable.

With ProVia’s premium construction and our expert installation, a garden window can last 20 years or more with proper care. Their vinyl frames and insulated glass are built for long-term performance in the St. Louis climate.

Absolutely. Most standard window openings can be modified to accommodate a garden window. Our team will assess your space and make any necessary adjustments to ensure a secure, energy-efficient fit.

ProVia garden windows are designed with a sturdy shelf area that can support everyday items like small potted plants, herbs, or decorative accents. While not meant for heavy loads, they provide plenty of strength for small items.

Most garden windows project about 18 to 24 inches outward from your home’s exterior. This creates extra shelf space and adds architectural interest without overwhelming your home’s design.

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