Business Details
12 Years
experience
Trusted Window & Door Installation in St. Louis
STL Windows & Doors is a family-owned and operated window and door contractor serving St. Louis and surrounding areas. Founded in 2014 by Andrew Lombardozzi, a carpenter with over 15 years of experience, the company combines decades of industry expertise with a commitment to quality and customer satisfaction. As a ProVia Platinum Dealer and Certified Installer, we offer American-made, ENERGY STAR-certified products backed by a 10-year workmanship warranty and a limited lifetime transferable warranty.Our team of skilled professionals prioritizes precision, transparency, and personalized service, ensuring every project meets the highest standards of durability and energy efficiency. We serve Saint Louis, Saint Charles, Jefferson, Franklin, and Lincoln counties, treating every client like family while delivering exceptional value and craftsmanship.
Services
Window Replacement
Door Installation
Window Cleaning
ProVia Windows
Entry Doors
Storm Doors
Patio Doors
Details
- Year established: 2014
Highlights and features
- 65+ years of combined experience in window and door installation
- ProVia Platinum Dealer with certified installation expertise
- 10-year workmanship warranty on all installations
- ENERGY STAR-certified products for maximum efficiency
- Locally owned with a 4.8-star rating from 156+ reviews
Associations and certifications
- ProVia Platinum Dealer
What people say
Outstanding trim work
Super professional
Dependable repairs
Gorgeous front door
Clean and precise
Services
Window Replacement
Enhance your home with ProVias energy-efficient replacement windows, available in double-hung, slider, and picture styles. Our installations improve insulation, reduce energy costs, and boost curb appeal. Each project includes precise measurements, certified installers, and a 10-year workmanship warranty. Serving St. Louis homeowners with durable, American-made solutions.
Door Installation
Upgrade security and aesthetics with ProVias fiberglass, steel, and patio doors. Our options combine durability, energy efficiency, and customization to match your homes style. Professional installation ensures a perfect fit, backed by a limited lifetime warranty. Ideal for enhancing home value and weather resistance in St. Louis climates.
Window Cleaning
Maintain crystal-clear windows with our professional cleaning services for residential and commercial properties. Using advanced techniques, we remove streaks, dirt, and debris to restore clarity. Part of our commitment to comprehensive home care, ensuring long-term beauty and functionality for your investment.
People
Andy Lombardozzi
Owner
Founder of STL Windows & Doors with 15+ years in window/door installation. Trained by his father, a 40-year veteran, Andy leads a team dedicated to exceeding industry standards and customer expectations.
Tom Lombardozzi
Installer
Experienced installer with a focus on precision and quality. Part of the family team committed to delivering top-tier craftsmanship and customer satisfaction for every project.
Questions
What is the cost of window installation?
Window installation ranges from $500–$1,500 per window, depending on style and quality. Request a free estimate for precise pricing tailored to your project.
Why choose STL Windows & Doors?
We’re a ProVia Platinum Dealer with 65+ years of combined experience, offering ENERGY STAR-certified products, a 10-year workmanship warranty, and 4.8-star reviews.
Do you offer financing options?
Yes, we provide financing deals and cash discounts. Discuss available options during your free consultation to find the best fit for your budget.
What areas do you serve?
We serve Saint Louis, Saint Charles, Jefferson, Franklin, and Lincoln counties. Contact us to confirm availability in your specific location.
Videos
Reviews (6)
Nicole Wehmeyer
Dec 27, 2021
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If you're looking for quality, fair pricing and great customer service you've found it. The entire process from beginning to end was pleasant. The reps are very knowledgeable and genuinely nice people. I never felt pressure during any step of the process and am so extremely happy with the final product. We'll be working with this company again for future updates and I'd recommend them to anyone. I must say, my absolute favorite associate was Hannah Lombardozzi. She along with her associate Troy installed our door. It was quick, clean and beautifully executed. I bet she's her parents favorite.
Glenn Bailey
Dec 02, 2021
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I can't say enough good things about this company and their professionalism. From the first meeting with Rob to the final clean up of the job, everything was great. Tony and his crew got here on time and worked efficiently all day. It's nice to finally find a company that really cares about not only their job, but their customers as well. I highly recommend them.
Tony
Oct 15, 2021
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Andy and his entire team were amazingly organized and committed to the removal of and the installation of twelve windows and one bay window in one day...even as the weather presented issues. The new windows are fabulous and no doubt much more energy efficient than our previous 35 year old windows. The attention to installation detail was outstanding. I can't say enough great things about Lombardozzi Construction, from the their sales team and office staff to the installation team!
Lisa Schoenherr
Jul 15, 2021
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Amazing experience from start to finish! 22 windows plus a new front door installed and we couldn't be happier. Hannah, Tony and Trey were professional and friendly throughout the three day install. They welcomed any questions and left the house very clean at the end of each day. Very pleased with the quality of the windows. They open and close so easily. Our house is noticeably cooler, even on extremely hot summer days. Our 2nd story is now a comfortable place to be! Thank you STL Windows and Doors.
Jennifer Hartranft
Sep 17, 2019
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I cannot write this positive review fast enough . We installed 5 new windows and three were new cuts through the wall. Everything was amazing . From the answering of the phone to the crew that showed up and finished within 2 days on schedule . They handled cleanup up after both days and left worksite immaculate . Best Part They dealt with the Local Inspectors and final inspection came one day later . Prices were very reasonable 5 windows under $800 each (remember this wasn't replacement windows This is new construction)
Devin J.
Dec 09, 2016
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I was referred to Andy Lombardozzi through the next door app and couldn't be happier. Andy showed himself to be very knowledgeable and willing to answer all my myriad questions. I plan on calling Lombardozzi construction to carry out all the work that needs to be done on my old character home. I'd happily refer Andy to friends and family.
