Casement Windows in St. Louis
installed by your local window contractor with 25+ Years of Reliable Window Installation Services
Enjoy sleek style, fresh air, and energy savings with Infinity by Marvin casement windows expertly installed by Replacement Windows by Lakeside.
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Beautiful, Energy Efficient Casement Windows
Are your current windows inefficient, a pain to operate, and—let’s be honest—an eyesore?
If so, you’ll love replacing your old windows with new casement windows installed by Replacement Windows by Lakeside to experience refreshing ventilation, efficient performance, and stunning views. We’ve been helping St. Louis homeowners turn their “house” into a “home” with expert window replacement since 1997—and we’re ready to do the same for you!
Sleek Style Meets High Performance with Windows from Infinity by Marvin
We exclusively install Infinity by Marvin® casement windows because of their durability, efficient performance, and customizability. Tailor your casement windows to your home’s unique style with the following options:
- Configurations — Discover the ideal window layout for your home with stand-alone casement windows or custom mulled combinations of two or more windows.
- Finishes — Choose from a range of beautiful, low-maintenance exterior and interior finishes designed to withstand wind, weather, and fading, including EverWood®.
- Glass Options — Make a design statement, improve efficiency, or enhance security with decorative, performance, or security glass options.
- Divided Lites — Achieve the unique performance of casement windows and the traditional look of double-hung windows with a Simulated Checkrail that mimics the classic appearance of a double-hung window.
- Hardware — Give your casement windows the perfect finishing touch with high-quality hardware, featuring options that range from classic and historic to sleek and modern.
- Screens — Add standard or high-transparency screens to your casement windows to enjoy bug-free ventilation and views.
Why St. Louis Homeowners Love Infinity by Marvin Windows
Refreshing Ventilation
Ready to welcome cool breezes into your home? Casement windows open and close like a door, allowing more fresh air into your home than any other window style.
Efficient Performance
Casement windows allow fresh air to flow in when they’re open. However, they keep unwanted drafts out when they’re shut, providing you with efficient performance and lower energy bills.
Picture-Perfect Views
Casement windows don’t have a horizontal check rail obstructing the glass from the center, which makes it easier to maximize the views (and sunshine!) inside your home.
Effortless Operation
Do you have trouble opening and closing windows in hard-to-reach spots, like above the kitchen sink? Casement windows come with a crank handle, making them easier to use than windows with sashes in high-up spaces.
How Much Does It Cost to Install Casement Windows?
At Replacement Windows by Lakeside, it’s our priority to understand your dreams and desires for your home, so we can offer multiple solutions within your budget. As you begin saving for your casement window replacement, here are some cost factors to keep in mind:
- Window Size & Layout
Larger windows or more complex configurations may increase both material and labor needs, which can influence the final price.
- Material Matters
We exclusively install Infinity by Marvin fiberglass windows—known for their strength, efficiency, and longevity. While they require a greater initial investment than vinyl or wood, they’re engineered to be the last windows you’ll ever need. - Style & Customization Options
Even within casement windows, style selections make a difference. Choosing between black or white frames, adding decorative grids, or selecting custom hardware can all impact the final cost—but they also allow you to personalize your home’s look in meaningful ways.
Get Stress-Free Window Installation with Our Precise and Personalized Process
We value transparency just as much as you do. To ensure there are no surprises along the way, here’s exactly what you can expect during casement window installation with our local team—from start to finish.
First, we’ll meet for a consultation, where we’ll learn your replacement goals and help you select the perfect configurations, finishes, and hardware.
Next, our team will come out to take precise measurements before custom-ordering your windows. We pride ourselves on doing the job right—the first time.
It’s installation day! Our in-house team will complete your window installation, taking extra precautions to ensure the safety of your home and family.
During the final walkthrough, we’ll explain the warranty coverage for your new windows, which includes our lifetime workmanship warranty.
Frame Your Favorite Views with Sleek, Efficient Casement Windows from Replacement Windows by Lakeside
Casement windows are the perfect solution for homeowners who want to maximize their home’s views and ventilation—all while guaranteeing efficient performance and effortless operation.
If that sounds like the kind of replacement windows you’re looking for, reach out to our local team in St. Louis for custom window installation—tailored perfectly to you and your home!
Contact us to book a free consultation and get started on your window replacement project!
Special Offer
12 Months, No Interest/No Payments*
No interest until Fall of 2027!*
Don’t make a payment until Fall of 2027*
Executed contract date range: 9/1/26 – 9/30/26
