About Us

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At Window Depot USA of St. Louis, we make Replacement Window Shopping Easy
At Window Depot USA of St. Louis, our story began in 2011 with a single product: premium gutter guard systems. What started as a small, customer-focused company quickly grew as homeowners recognized our quality workmanship and asked for more. Over time, our reputation for reliability and results opened the door to new opportunities—and we rose to meet them.
Today, we specialize in high-performance replacement windows, entry and patio doors, and gutter protection systems. We’ve partnered with industry leaders like Window Depot USA to bring homeowners top-tier, energy-efficient triple-pane windows that deliver incredible value.
Every product we install is carefully selected for its durability, performance, and curb appeal—designed to enhance your home and protect it for decades to come.
We are committed to providing homeowners in St. Louis and the surrounding areas with the very best combination of quality, performance, and affordability for their windows and entry door projects. This goes for you and your home as well!

Jason Quillman
CEO & Owner
I got my start in the home improvement industry knocking on doors for a large home-improvement company shortly after I turned 16. I didn’t originally intend to forge a career in home improvement. In college, I got a Bachelor of Science degree in Business Administration with an emphasis on Management and Marketing. This might seem like a far cry from home improvement, but it’s an education that has helped me build one of the most trusted window and door replacement companies in the St. Louis metro area. I thrive at working through tough situations and finding resolutions—I am passionate about figuring out solutions to problems that my competitors can’t recognize. Also, I just plain love helping people not only achieve their remodeling goals but doing so beyond their expectations.
Outside of work, I am passionate about…
Reading personal development books and listening to informational podcasts that pertain to business and mindset.
Motorcycle racing. I road raced motorcycles at a professional level, which helped instill a great work ethic and ‘never give up’ attitude that I apply to our business every day.
Golf. I enjoy it because it’s a sport that is very difficult and can never be conquered. There is always room for improvement, which makes it an activity that’s right up my alley.

Angie Butenschoen
COO & Owner
My path to the window and door industry wasn’t a straight line—and I think that’s exactly what makes me effective at what I do. I earned my undergraduate degree in Marketing and Business Management from Maryville University, then went on to complete my MBA at Lindenwood University. Armed with that foundation, I spent the majority of my career in healthcare and revenue cycle management, where I developed a deep understanding of operational efficiency, customer experience, and the importance of building systems that actually work for the people they serve.
After years in that fast-paced, detail-oriented environment, I made a pivotal decision: to join my brother in building something from the ground up. Together, we’ve created a family-owned replacement window and door business that reflects who we are and what we believe in. This isn’t just a company to us—it’s an extension of our values. We’ve built our foundation on being service-oriented, trustworthy, likeable, willing, and dependable. Those aren’t just words on a wall; they guide every interaction we have with our customers and each other.
What I learned in healthcare translates directly to how I approach this business. Revenue cycle management taught me that every touchpoint matters, that clear communication builds trust, and that following through on your commitments is non-negotiable. When a homeowner invites us into their space, they’re trusting us with one of their most significant investments. I don’t take that lightly.
Outside of work, service remains central to my life. I sit on the executive council of Epsilon Sigma Alpha, a service organization where I get to collaborate with like-minded people dedicated to making a tangible difference in our communities. Giving back isn’t something I do when it’s convenient—it’s woven into how I live.
When I need to recharge, you’ll find me immersed in the world of motorsports. I’m passionate about motorcycle racing and Formula 1—there’s something about the precision, strategy, and sheer determination in those sports that resonates with me. Most importantly, though, I treasure time with my family. They’re my anchor and my motivation.
I believe that how you do business matters just as much as what you deliver. If you’re looking for a company that will treat you with respect, communicate honestly, and stand behind their work, you’ve found the right team.

Brent Varner
Sales Manager
I first joined Window Depot in 2016 after working as a carpenter in both the new construction and the remodeling side for more than 15 years. I’ve found that my previous work on the labor side of the field gives me a better understanding of the installation and technical aspects of what we do here at Window Depot, which allows me to be a true consultant to homeowners instead of just another salesman.
When I’m not helping homeowners with their window needs, I’m either spending time with my growing family or running the trails and roads throughout the area.

Zach Flowers
Marketing Director
"I grew up in Northeast Ohio and graduated from THE Ohio State University in 2015. After college, my career in sales and marketing brought me to St. Louis in the spring of 2019 with MillerCoors—and I couldn't have picked a better time to arrive, just as the Blues were making their unforgettable Stanley Cup run.
St. Louis quickly became home in more ways than one. While hosting a Blue Moon marketing event during Kentucky Derby weekend that year, I met my now-wife, and we've been together ever since. What started as a career move turned into finding a place to build a life, and we don't plan on leaving St. Louis anytime soon.
Throughout my career, I've had the opportunity to work in a variety of industries and roles. Some experiences were incredibly rewarding, while others taught me valuable lessons about the kind of company and culture I wanted to be part of. Above all else, I was searching for a place where people genuinely cared about one another—and I found that at Window Depot USA of St. Louis.
From my very first day, it was clear that Window Depot is different. Employees, customers, vendor partners, and the community are all treated like family. That culture of integrity, respect, and putting people first is what makes this company so special, and it's something I'm proud to be a part of every day.
As Marketing Director, I'm excited to help share our message and vision throughout the greater St. Louis community. Whether it's connecting with homeowners, supporting local organizations, or giving back through community initiatives, my goal is to help build lasting relationships and make a positive impact. I'm grateful to be part of the Window Depot family and look forward to helping even more families create homes they'll love for years to come.
When I'm not working, you'll usually find me enjoying everything St. Louis has to offer. I love attending concerts, cheering on our local sports teams, and checking out car shows and card shows whenever I can. Some of my favorite evenings, though, are the simple ones—relaxing on our back patio with my wife and our three dogs, enjoying a good cigar, sipping on a nice tequila or glass of wine, listening to music, or watching the game on our outdoor TV. Those moments remind me why we're so proud to call St. Louis home."
Window Depot USA of STL Team

No Company Can Provide You With More Features at a Better Price

We understand that new windows, doors, and sliding patio doors and are more than just functional components of your house; they are an investment in the future comfort, value, and efficiency of your home. That’s why we will work closely with you to understand your specific needs, style preferences, and budget constraints.
Right away you will notice our wide range of window options to cater to every taste and budget, from classic wooden windows to low-maintenance vinyl windows to energy-efficient triple-pane glass windows and even composite windows! We partner with the top U.S.-based window manufacturers known for innovation and durability, so you can be sure your new windows will last for years to come.

But Window Depot USA of St. Louis doesn’t just stop at providing high-quality windows. We also take great pride in our expert installation services. Our team of experienced and top-quality installers is committed to precise measurements, meticulous installation, and a seamless finish. They understand that it is not just the quality of the replacement windows that is important, but also the quality of the overall installation and treat your home as if it were their own.
We will prove to you that Window Depot USA of St. Louis Creates Happy Customers! Our goal is to make sure that you’re completely happy with your new windows and the overall installation process. Our local reputation means as much to us as does your home!

We are also very proud to offer vinyl replacement windows and replacement doors from some of the top manufacturers in the U.S. This makes us a one-stop shop for the majority of your exterior home improvement needs.
Do your homework. Talk to at least 2 other companies but be sure to add us to your list. You’ll be glad you did!
About Window Depot USA of St. Louis
Find out how we can help enhance your home’s interior comfort, add to its curb appeal, and maximize your energy savings. Call Window Depot today for a free in-home consultation and quote for your next home improvement project.
At Window Depot, we are committed to providing homeowners in St. Louis and the surrounding areas with the very best combination of quality, performance, and affordability for their replacement windows, and entry door projects. We pride ourselves on providing expert product knowledge and honest advice in a comfortable, no-hassle environment. We are dedicated home improvement professionals who truly believe in delivering the ultimate in customer satisfaction.
Window Depot USA of St. Louis was founded on solid industry and business experience. Our passion, dedication, and commitment to excellence are infused in every aspect of the company. From providing helpful, informative consultations to outstanding installation craftsmanship, you’ll notice a real difference in the way we treat our customers.
On top of being fully licensed and insured, we employ highly-experienced and specially trained technicians. All of the products and materials that go into each installation are of the most premium grades available. And because we pay close attention to the details, you’re always assured the very best home improvement project possible.
Here’s 6 Reasons Why You Should Choose Window Depot USA of St. Louis:
Locally Owned and Operated by knowledgeable window professionals with years of experience helping homeowners choose the right products for their home, budget, and lifestyle.
Professional Installation by experienced factory certified technicians with a keen attention to detail and excellent craftsmanship. We take pride in our work and only use high-quality materials to ensure a proper installation.
Passionate about providing quality products and installation with a genuine desire to do right by every customer.
Partnered with a National Organization that provides bulk purchasing power, which means lower prices for you.
Fully Licensed and Insured – Worker’s Compensation and Liability Insurance.
Comprehensive Warranty on both product and labor.
See What Our Happy Customers are Saying
“Great experience with Window Depot! 22 windows installed with expertise, and the ProVia windows are top quality. AC and heat runs maybe less than half compared to the failed windows that were 26 year old builder grade. Customer service was very professional, including one broken glass on delivery which they ordered immediately and replaced the sash in 2 weeks.”
Mark M.
MO
May 7, 2026
“I had a great experience with window depot stl from start to finish. Joey initially came out and took the time to go over all the details with me.He was knowledgeable thorough and fantastic to work with. When it came time for installation Ryan and his crew did an amazing job. They were professional, efficient, and the quality of their work really shows. The entire process has been smooth and I couldn't be happier with the results. I highly recommend Windows depot to anyone looking for quality windows and excellent service. Thanks again”
Amy L.
MO
May 6, 2026
“If I could give them 10 stars I would! From the first conversation with Joey, then to Ryan and his crew was absolutely top notch! The attention to detail, the care and respect for your home is second to none. When they came today to install windows in my home they laid down floor covers to protect our hardwood floors....how thoughtful! Extremely respectful of our home. Amazing job! Definitely recommend you to all my friends”
Rod
MO
May 5, 2026









St. Louis’s Best Value in Replacement Windows, Entry Doors, and Sliding Patio Doors
When it comes to increasing energy efficiency, improving curb appeal, comfort, and noise levels of your home, there’s no better investment than replacement windows from Window Depot USA. But with so many different window replacement companies to choose from, how can you be sure you’re getting the best possible service?
Window Depot USA of St. Louis understands that windows and doors are more than just functional components of your home; they’re part of your connection with your neighborhood.
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Monday-Friday: 8:00 am - 4:00 pm
Saturday-Sunday: By Appointment
