Windows Contractor in Clayton
Clayton’s trusted window contractor, specializing in Infinity by Marvin® fiberglass windows—designed for strength, beauty, and lasting energy efficiency.
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Experience the unparalleled excellence of Infinity by Marvin Windows
Enduring Quality
Unmatched Reliability
Homeowner Satisfaction
Restore Your Home's Comfort, Safety, and Style with Expert Window Installation
Have you ever shivered through a family movie night because of a draft, noticed condensation on old panes, or watched your energy bills climb even after investing in a new AC unit? Old, inefficient windows might be the reason. The most common question we hear is whether to replace all windows at once or one at a time-learn more about this question below.
For nearly three decades, Replacement Windows by Lakeside has helped St. Louis area homeowners solve this complex problem. We work with you to understand your home’s unique situation, your preferences, and your expectations. Then, we create a personalized solution to make your home a place you truly enjoy.
As the Best Window Contractor in Clayton, We offer the following services:
- Window installation
- Window replacement
- Casement window installation & replacement
- Double-Hung window installation & replacement
- Picture window installation & replacement
- Entry door installation
- French door installation
- Sliding glass door installation
We Install Fiberglass Windows by Infinity by Marvin for Lasting Results
As an Infinity by Marvin Gold Partner, we’re committed to providing families in Clayton, MO, with a superior window replacement experience. Our windows aren’t just beautiful—they are built with Ultrex® fiberglass, a material eight times stronger than vinyl and nearly three times stronger than wood-vinyl composites. Fiberglass windows deliver unmatched strength, safety, durability, and lasting beauty.
Here are some of our popular window styles, perfect for complementing your home’s unique character:
Double-Hung Windows
These feature two operable sashes that tilt in for easy cleaning and offer excellent ventilation. They are an ideal choice for classic architectural styles like Colonial Revival and Tudor Revival homes.
Casement Windows
Hinged on the side, these windows open outward to capture breezes, providing maximum airflow. They are a great match for modern and contemporary homes.
Picture Windows
Large, fixed panes that perfectly frame outdoor views and flood your home with natural light. These are the perfect fit for Mid-Century Modern and open-plan homes.
Fiberglass Entry Doors from ProVia
In addition to windows, we install ProVia and Infinity by Marvin fiberglass exterior doors that look stunning on every home style from historic Victorian to contemporary Ranch.
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
All at Once or One at a Time: Flexibility and Budget-Friendly Options
The Benefits of a Full-Home Window Replacement
While it’s possible to replace windows individually, completing the project all at once is often more efficient and cost-effective. We can ensure a consistent look throughout your entire home, and you’ll notice immediate improvements in comfort, energy efficiency, and noise reduction.
Replacing Windows One at a Time
For some homeowners, a phased approach works better. This method spreads out the costs, allows you to tackle the draftiest or most damaged windows first, and provides the flexibility to mix styles, like Picture Windows in the living room and Double Hung in bedrooms.
One common concern many homeowners have when shopping for windows is the fear of overpaying. We understand this, which is why we’ve built our business on transparent, honest pricing. We provide a clear, upfront quote that covers all materials and labor, so there are no hidden fees.
Our Simple 3- Step Process:
Personalized Consultation
Begin with a stress-free consultation where we listen to your vision and needs, guiding you to the perfect window solutions tailored just for your home.
Precision Installation
Our expert team carries out your window installation with meticulous attention to detail, ensuring a seamless process while keeping you updated every step of the way.
Delight in Your Home’s Transformation
Revel in the beauty and enhanced efficiency of your new windows, knowing you’ve chosen the best products and service for your home.
Transform Your Beautiful Home with Our In-House Contractors
Whether you replace all your windows at once or gradually, we make the process smooth, cost-effective, and tailored to your style. We also install beautiful and secure entry, patio, and storm doors from leading brands, like Infinity by Marvin® and ProVia®. With Infinity by Marvin’s Ultrex® fiberglass windows, you’ll enjoy strength, safety, and durability that is the mark of true excellence.
Let’s find the smartest solution for your home in Clayton, MO—schedule your free consultation with 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
