25% off premium windows and doors
|Through October 15Free Window Estimate for St. Louis Homeowners
Get your free estimate
Takes about a minute. We call you back fast.
Premium ProVia and Pella windows without the premium price. Family run, 80 plus combined years of experience, and a free in home estimate with no obligation. Showroom in St. Peters, MO.
- ENERGY STAR options
- ProVia and Pella
- Local installers
- Free estimate
How it works
Request your estimate
Fill out the short form or call us. It takes about a minute.
In home measure
We measure your openings, show samples, and give you a clear price.
Professional install
Our local crew installs, cleans up, and walks you through the work.
Why St. Louis homeowners pick us
Energy savings up to 35%
ENERGY STAR rated glass packages that cut drafts and shrink utility bills.
Local St. Louis crew
Family run company with 80 plus combined years in the window business.
Financing available
Flexible payment options so a full home project fits your budget. (Terms apply.)
Award winning service
ProVia and Pella products installed right, backed by strong local reviews.
What neighbors are saying
Verified Google reviews from STL Windows Direct customers.
Install went great. No issues, cleanup was exceptional. Everyone I worked with or communicated with were all very professional, starting with Cheryl who explained the product and started the process. Then measure and install. So glad I picked STL Windows Direct to complete my home improvement.
Janet Wells, April 2025
The STL Windows Direct experience was great, from the initial contact to the job estimate to the job's completion. The workers were pleasant to deal with, were on time every day, cleaned up daily and the job was completed on time. We are very pleased with their professionalism.
Kerry Luster, January 2025
I highly recommend Jonathon Head for all your needs. Honest and knowledgable service along with fair pricing. Excellent scheduling and install (ask for Tom) on basement walk out, sliding glass door. Surpasses competitors.
Gina Donato, January 2025
My husband and I had STL Windows Direct come out and replace our back door and they were great to work with. Our old door frame was rotted so they took time and care to make sure all that rot was gone and the new door would be nice and sealed. I would definitely be calling STL again for windows and doors in my house.
Kathryn Vogt, January 2025
Window styles we install
Where we work
Showroom: St. Peters, MO. Office: (314) 690-5800. Not sure if you are in range? Call and we will tell you straight.
Common questions
How does pricing work?
Window pricing depends on size, style, and glass package. We measure in your home, show you the options, and give you one clear written price. No hidden fees and no surprise add ons.
What are the terms of the 25% off offer?
The offer runs through October 15. It applies to qualifying projects, cannot be combined with other offers, and must be presented at the time of your estimate. Ask your estimator for details.
How long does the project take?
Most homes are installed in one to two days once your windows arrive. Manufacturing time is typically a few weeks, and we keep you posted along the way.
Do you measure in my home?
Yes. Every quote starts with an in home measure so the price you get is the price you pay. It usually takes 45 to 60 minutes.
Claim your 25% off before it ends
Tell us where you are and what you need. We handle the rest.
Visit our showroom
See and open full size windows before you buy. Our showroom is at 4118 N Service Rd in St. Peters, MO.