Upgrade your St. Louis home with durable, energy-efficient, and customizable replacement windows solutions. Replacement Windows by Lakeside is your trusted local contractor since 1997.
The Best Window Replacement in St. Louis with Infinity by Marvin
Struggling with the undesirable effects of old, outdated windows, including uncomfortable drafts, noise penetration, and sashes too tough to open and close? If so, it might be time to consider window replacement from a reliable window contractor near you, like Replacement Windows by Lakeside.
We’ve been the exclusive distributor and authorized contractor of Infinity by Marvin® windows in St. Louis since 2006. This means our high-quality window installation techniques and commitment to customer care are backed by the brand to give you peace of mind and long-lasting performance.
Ready to upgrade your windows but not sure where to start?
Our expert guide walks you through everything you need to know! Discover the best options for energy efficiency, style, and long-term value. Check out the Ultimate Guide to Replacement Windows today!
WHAT MAKES INFINITY BY MARVIN WINDOWS A DESIRABLE UPGRADE FOR HOMEOWNERS?
New windows offer practical improvements, like temperature regulation and sound control, but can also refresh your home with a stunning new style that pops from the curb. And when it comes to replacement windows, there isn’t a better option for St. Louis homeowners than beautiful, durable Infinity by Marvin windows.
Here are some homeowner-approved benefits of this leading brand:
Durable Material
Infinity by Marvin windows are made from Ultrex®—a durable fiberglass material eight times stronger than vinyl and nearly three times stronger than wood-vinyl composite products. Ultrex is built to last a lifetime. Your Infinity by Marvin windows will be the last replacement windows you’ll ever need! This material resists bending, flexing, and warping to provide long-lasting performance—regardless of what the weather throws its way.
Ultrex also expands and contracts at nearly the same rate as glass, so it won’t crack or leak. Vinyl, aluminum, and wood-vinyl composite products all have a thermal expansion rate that is significantly higher than glass—making Ultrex the clear winner when it comes to durability.
Efficient Performance
In addition to a low thermal expansion rate that mitigates seal failures and air leaks that can result in high utility bills and an uncomfortable house, Infinity by Marvin windows are offered with other attractive energy-efficient features.
These windows come with LowE2 glass with Argon to reduce solar heat gain and provide maximum efficiency—keeping your home cool in the summer and warm in the winter—and protect against harmful ultraviolet rays. Argon gas between each double-pane window also improves insulation and efficiency.
Expansive Views
Ultrex’s exceptional strength and durability allow us to use less material in our window frames, providing greater views and more daylight without sacrificing strength. Say goodbye to bulky window frames and enjoy expansive views, maximizing both durability and aesthetic appeal.
Simple Maintenance
Regularly cleaning your windows might be a necessary chore, but it doesn’t have to be a hassle. The most popular Infinity by Marvin window styles—single hung and double hung—come with tilt-in sashes to make regular maintenance and cleaning a breeze—from the inside out.
Customizable Design
In addition to the versatile shapes and window styles below, Infinity by Marvin offers several exterior and interior colors and finishes, including EverWood®. This engineered wood grain interior finish looks, feels, and stains like natural wood—but it offers the reliable performance of Ultrex fiberglass.
Beautiful Window Styles that Enhance Homes with Enviable Curb Appeal
With several unique window shapes, sizes, and styles to choose from, it’s never been more straightforward to customize your home’s appearance with Infinity by Marvin windows. Here is an overview of the window styles we install:
Single-Hung Windows
Single-hung windows are simplistic, traditional, and easy to operate. These no-fuss windows have a lower sash that slides up and down to invite refreshing breezes inside that also tilts in for easy-breezy maintenance. You can choose from multiple configurations and unique styles, including Cottage and Oriel, to create a custom-made look with single-hung windows.
Double-Hung Windows
Double-hung windows offer all the benefits of single-hung windows, including the same timeless styles and configurations, but are upgraded with modern functionality. You can achieve an ideal level of ventilation with operable, tilt-in top and bottom sashes, making these windows perfect for bedrooms, living areas, and any room on the second floor in two-story homes.
Casement Windows
Casement windows offer a contemporary, clean look and feel for modern homeowners. By using the folding handle and side hinge to crank open your casement window to the left or right, you can enjoy picturesque views unobstructed by spacer bars, grilles, and sashes—both when your windows are open and closed. Plus, Infinity by Marvin’s Easy Wash® hinge makes it simpler than ever to clean the outside of your windows from the inside of your home.
Slider Windows
Slider windows, also known as glider windows, operate like single-hung windows but with one significant difference. Instead of a sash that slides up and down, slider windows slide open to the left or right. However, you will enjoy more than easy operation from your slider windows—a tight-fitting seal and tilt latch promise energy-efficient performance and effortless cleaning.
Awning Windows
Awning windows are ideal to add architectural interest and refreshing ventilation to hard-to-reach spaces. Like casement windows, awning windows crank open with a folding handle and are latched shut, but instead of opening to the left or right (like a door), they are hinged at the top and swing open at the bottom. Homeowners appreciate the compact, easy-to-operate design of awning windows in rooms that benefit from fresh air, like bathrooms and kitchens.
Round-Top Windows
For the tried-and-true performance and functionality of single-hung windows with a fashionable twist, homeowners adore round-top windows. It’s never been easier to add inviting charm and character to your home with the six different round-top window styles and customizable configurations offered by Infinity by Marvin.
Bay Windows
Beauty and architectural interest are the hallmark features of bay windows. A bay window is an angular, three-window unit with either a picture window in the center and double-hung or casement windows on the side, or double-hung windows all around. They flood your home with natural light and protrude from the exterior, creating additional square footage and a “bonus space” that can become a breakfast nook, reading corner, or display shelf.
Bow Windows
Bow windows are similar to bay windows—multi-window units that protrude from the home’s exterior. However, unlike bay windows, bow window systems can be made of multiple windows (up to six) and protrude in a curve (bow) instead of a sharp angle. Additionally, bow windows are available in a casement configuration which opens outwards, so they’re excellent at providing character and historic charm to a home and offer ventilation.
Custom/Specialty Windows
Have a custom window design in mind? No problem! Replacement Windows by Lakeside can create fixed window shapes, from octagons and hexagons to triangles and trapezoids. We love taking on challenging projects and are fully equipped to create new window openings with our in-house carpenters and architects.
Why Choose Replacement Windows by Lakeside for Window Installation?
Replacement Windows by Lakeside is proud to offer Infinity by Marvin window installation to homeowners in the St. Louis area. You can count on the following when working with us:
- Product Knowledge — As the only Infinity by Marvin authorized contractor in St. Louis, you can trust that your windows will be installed with precision and excellence.
- Manufacturer Recognition — We have been recognized as an “Infinity by Marvin Gold Partner,” meaning our installation technique exceeds the manufacturer’s stringent requirements. We take extra steps to ensure your windows are watertight. In a remodel install, we will replace your water management system to ensure that you will never have issues with your windows again.
- Warranty Coverage — When you invest in window installation with Replacement Windows by Lakeside, you’ll receive two outstanding warranties: a lifetime workmanship warranty from us and a manufacturer warranty from Infinity by Marvin.
Install Dazzling, Durable Windows with Replacement Windows by Lakeside
Infinity by Marvin fiberglass windows have it all—durable frames, versatile styles, gorgeous finishes, energy-efficient features, and effortless maintenance. What more could you ask for in a modern window system? We can’t think of anything!
Ready to enjoy these benefits of Infinity by Marvin windows? Our team at Replacement Windows by Lakeside would be thrilled to help. We provide free, no-pressure estimates, giving you the information you need without any obligation. Contact us today!
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
