Awning Windows in St. Louis
installed by your local window contractor with 25+ Years of Reliable Window Installation Services
Get stunning, energy-saving awning windows in St. Louis from Replacement Windows by Lakeside, your local Infinity by Marvin installer.
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Get Picture-Perfect Views in Tough-to-Reach Spaces with Stunning Awning Windows
Searching for a stylish, efficient replacement window that is versatile and easy to operate while offering panoramic views? If so, awning windows might be the perfect choice!
Our team at Replacement Windows by Lakeside has helped homeowners in St. Louis find tailor-made window solutions while providing expert installation since 1997—and we’d love to do the same for you.
Lifetime Workmanship Warranty
You can rely on us for excellence in quality, value, and craftsmanship.
- We have an A+ Rating with the Better Business Bureau
- Hundreds of reviews combined with our full exterior company, Lakeside Renovation & Design
- All of our in-house contractors are licensed and insured
- We provide Lifetime Workmanship Warranty on top of Infinity by Marvin’s product warranty
- We offer financing options to work with your budget
What Makes Infinite by Marvin Windows Superior to Competing Window Brands?
We exclusively install durable Infinite by Marvin® fiberglass windows, loved by homeowners for their premium performance, sleek appearance, and, best of all, customizable options!
As the exclusive distributor and authorized contractor for Infinite by Marvin in St. Louis, we’re proud to offer precise installation and expert guidance on selecting the best awning windows for your home from these options:
- Styles & Configurations — Find the ideal window configuration with stand-alone awning windows or combinations of multiple windows attached together.
- Exterior & Interior Finishes — Choose from gorgeous, low-maintenance frame finishes, including EverWood®, an interior finish that looks and feels like natural wood.
- Glass & Divided Lites — Create windows that look as fantastic as they perform with divided lites and decorative, specialty, and performance glass.
- Hardware & Screens — Add the perfect finishing touch to your windows with top-quality hardware options and durable screens.
Why Homeowners in St. Louis Love Infinite by Marvin Awning Windows
Versatile Style
If you’re looking for a window that pairs well with a range of other styles, awning windows are a great choice. Awning windows specifically complement picture, casement, and double-hung windows, adding architectural interest to nearly any home style in St. Louis.
Simple Operation
Awning windows are hinged at the top and open and close outward with a folding handle that tucks away when not in use. This makes awning windows an exceptional option for tight, hard-to-reach spaces, like in the shower or above the kitchen sink.
Efficient Performance
While awning windows provide refreshing ventilation and airflow when open (making them an excellent choice for high-traffic rooms!), they also seal super-tightly shut to avoid unwanted drafts, helping you save money month-to-month with lower energy bills.
Stunning Views
Awning windows don’t have a horizontal center check rail, which allows for unobstructed glass panes. This makes them a desirable option for homeowners who want to maximize their home’s natural light and frame the “picture-perfect” views right outside their window (literally!).
How Much Will It Cost to Install Awning Windows?
At Replacement Windows by Lakeside, we strive to understand your dreams for your home so we can offer several viable solutions for your family and budget. That said, here are a couple of major cost variables to consider as you begin budgeting for new windows:
- Size: Large windows or complex configurations can increase material and labor costs, adding to the overall price of your window installation.
- Material: We install top-quality Ultrex® fiberglass frames, which are more expensive than wood or vinyl frames (but cheaper in the long run, since they’ll last a lifetime!).
- Style: Your personalized selections for your windows—like grilles, frame colors, and custom hardware—will add character to your home, but can also increase the final price.
Our Personalized, Stress-Free Window Installation Process
We’re proud to put our name on each project we complete, because we’re genuinely committed to doing the job right—the first time! Our dedication to excellence is reflected in our lifetime workmanship warranty and our safe, straightforward installation process that puts your family’s needs first.
Consultation — First, we’ll start with a free, no-pressure consultation to select the perfect windows, finishes, and hardware for your needs and budget.
Measurements — Next, a member of our team will come to your home to take measurements for your new windows before placing a custom order.
Installation — During installation, we’ll take extra care to protect your property from dust and debris, keeping your home clean and safe for your children and pets.
Walkthrough — After our in-house team’s expert installation, we’ll conduct a final inspection and discuss the warranty coverage for your new windows.
New Windows for a Weldon Springs, MO Home
“When our Weldon Spring homeowners set out to refresh their home’s exterior, they wanted more than just a new look—they needed energy-efficient windows and a statement front door that would bring their farmhouse vision to life…”
Window & Door Projects Completed Throughout the Greater St. Louis Area
Infinity Window Installation That Refreshed a Two-Story Home in Chesterfield, MO
Creating Space and Style with a New Sliding Door in Wildwood, MO
Elevating Curb Appeal with New Windows & Doors in Weldon Spring, MO
Window & Door Makeover Brought New Life to This Wentzville Farmhouse
Stunning Window Replacement for a Home in Lake Saint Louis, MO
Revamping a St. Louis Home with Custom Window Installation
Frequently Asked Questions about Window Replacement
What makes Replacement Windows by Lakeside a trusted St. Louis window contractor?
- We have been St. Louis’s exclusive Infinity by Marvin authorized contractor since 2006.
- We maintain a lifetime workmanship warranty in addition to the manufacturer’s warranty.
- Our installation is handled by factory-trained, in-house specialists, not subcontractors.
How far does your service area extend around St. Louis?
We serve the greater St. Louis metro area, including both eastern Missouri and parts of Illinois.
If your specific city isn’t listed, you can contact us — often we can still serve your area.
What warranties and guarantees come with my new windows?
- You receive a lifetime workmanship warranty from Lakeside in addition to the manufacturer’s warranty.
- Because we are an Infinity by Marvin authorized contractor, your installation meets their standards — guaranteeing the manufacturer warranty.
What factors influence the cost of replacing windows in St. Louis?
- Window size, configuration, and complexity
- The frame material and finish you choose (fiberglass vs vinyl or wood-like interior finishes) will impact price.
- Extra customizations like decorative hardware, grille patterns, and unique configurations add cost.
- Structural issues uncovered during installation (rot, damage) can require additional repair work. We always discuss with homeowners before proceeding.
Do you offer financing or special payment options for windows in St. Louis?
- Yes, we offer flexible financing plans through GreenSky
- We also have monthly special offers to help your project come to life
What is the window installation process when working with your team?
- We begin with precise measurements to ensure a custom fit.
- Our installers use polyurethane non-expanding foam (not expanding foam) for insulation, avoiding frame deformation.
- We seal each window with quality sealants to ensure air- and water-tightness.
- We finish with interior trim or reuse existing trim if it’s in good shape, then perform a final walkthrough.
For more details on our installation process, see our blog “What to During the Window Installation Process“
What styles and types of windows do you install in St. Louis homes?
We install Infinity by Marvin windows in a variety of styles; such as double hung, casement, and bow windows (to name a few).
Our windows are custom fit, and you can choose various operating styles, hardware, colors, finishes, and grille options.
When should I replace my windows rather than repair them?
- Signs like air leaks or drafts, condensation between panes, or difficulty opening/closing windows indicate it’s time.
- If your energy bills are steadily rising and windows are old or inefficient, replacement may give a better ROI.
- Older windows that are warping, rotting, or structurally unsound typically can’t be cost-effectively repaired.
See our “Replacement Window Guide” for in-depth information on when to replace your windows!
Why choose fiberglass (Infinity by Marvin) windows instead of vinyl or wood?
- The Ultrex® fiberglass used in Infinity windows is eight times stronger than vinyl and resists warping, bowing, and deterioration.
- Fiberglass has low thermal expansion (closer to glass), making seals more durable and less prone to failure.
- These windows are more energy efficient (Low-E coatings, argon gas fills) and offer long‑term performance with minimal maintenance.
Will replacing my windows lower my energy bills in St. Louis?
- Yes — poorly insulated or leaky windows allow heat transfer. Upgrading to energy-efficient windows can reduce heating/cooling costs.
- Our Infinity by Marvin windows come with Low-E coatings and argon fills, which help block heat gain/loss.
Call Replacement Windows by Lakeside to Schedule Stylish, Durable Awning Window Installation
Ready to boost your home’s efficiency and style with beautiful, easy-to-use awning windows? Contact us to schedule a free consultation, and let’s start the process of turning your home into a house you truly enjoy with new windows!
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
