STL Windows & Doors: The Preferred Window Installation Service in St. Louis

We’re a family-owned and operated window and door company in St. Louis, MO. With over 65 years of combined experience and the most skilled installers, we ensure you always receive the quality you deserve. Choose a Deal with our fast and free in-home estimates.

We prioritize delivering what homeowners value most: competitive pricing from a trusted source backed by stellar reviews, solid warranties, friendly service, and a broad selection of energy-efficient products in all the top styles.

We’re Accredited

BBB Accredited A+ Rated
EPA Certified Renovation Firm
A Rating with Angie's list
HomeAdvisor Elite Servifce Provider
HomeAdvistor Top Rated Window Company

We’re proud to be a HomeAdvisor Top Rated and Elite Service provider, with a track record for excellence in quality, value, and customer service. Our 100% recommendation rate and recognition by Forbes.com as one of St. Louis’s finest window companies speak volumes about our dedication.

and Highly Rated

ProVia Replacement Windows
HIGHLY TRAINED, CERTIFIED INSTALLERS

REPLACEMENT WINDOWS

Enhance your home with ProVia’s top-quality, American-made replacement windows. Discover unparalleled beauty and durability in our diverse range of styles.

TYPES OF WINDOWS WE OFFER

Explore our selection of ProVia windows, including double-hung, casement, and more. Each style promises to transform and elevate the look of your home while also being ENERGY STAR rated.

SLIDER

ProVia Endure Slider Window

BAY & BOW

ProVia Aeris Bay & Bow Window

PICTURE

ProVia Aeris Picture Arch Window

GARDEN

ProVia Aspect Garden Window

HOPPER

ProVia Aspect Hopper Basement Window

ARCHITECTURAL

ProVia Aeris Architectural Window
We Make Door Replacement Easy

EXTERIOR DOORS

Browse our ProVia exterior doors, combining style, security, and energy efficiency to beautifully match and upgrade your home’s exterior.

ProVia Exterior Doors

Our DOOR Options

Explore our variety of ProVia doors, including entry, storm, and patio styles, each crafted for durability, beauty, and energy efficiency in your home.

ENTRY

ProVia Signet Entry Door

SLIDING

ProVia Endure Sliding Glass Patio Door

PATIO

ProVia Signet Patio Door

FRENCH

ProVia French Doors

STORM

ProVia Storm Door

WHY CHOOSE US?

TEAM + PRODUCT + SERVICE.

We’re revolutionizing how St. Louis homeowners buy windows and doors. We promise transparency and unmatched value. Our approach is straightforward—no aggressive sales, just superior installation of quality American-made products and the best warranties.

We’re committed to hiring craftsmen who care, backed by our certified training, professionalism, and quality values. Our promises are clear: to bring efficiency and beauty through our products and peace of mind through careful installations and dedicated support.

PROVIA PLATINUM DEALER

We’re committed to excellence as a Platinum ProVia Dealer and Certified Installer. We proudly offer ProVia’s superior range of windows and doors, ensuring expert installation and unmatched quality in every project. Trust us to bring the best of American-made craftsmanship directly to your home.

ProVia Platinum Dealer 2024
10 Year Workmanship Guarantee

10-Year Workmanship Warranty

When comparing window and door companies, read our reviews, and please consider that we offer a 10-Year Workmanship Warranty.  We’re so confident in the quality of our windows and doors installation that we will back up our workmanship for a full ten years from installation.  Rely on us for excellence in quality, value, and craftsmanship.

Design, Order, Install, Inspect

OUR SIMPLE YET PROVEN PROCESS

01

Talk With Pro

You can share your needs through our free estimate form and we will contact you back to schedule a convenient home visit with one of our professionals.

02

ONSITE ASSESSMENT

During our visit, we will respond to your inquiries, present various sample products, and gather the essential measurements to create an estimate.

03

DELIVER ESTIMATE

Once we have all the details, we will provide a competitive estimate with clear pricing, an expected time frame for delivery and completion.

04

COMPLETE JOB

Our team works diligently to complete projects swiftly and minimize disruption in your home. Our post-competition inspection ensures everything was done to spec.

ProVia Cost vs Value Report

INCREASE YOUR HOMES RESALE VALUE WHILE BOOSTING APPEAL

When you purchase your windows and doors from us, you will receive high-quality products with a 10-year workmanship warranty and a one-time transferrable warranty.

  • Good curb appeal attracts more buyers and can help your home sell quickly.
  • Exterior home improvements can increase your home’s value.

Download the ProVia Cost vs Value Brochure for more.

Join Our Referral Program & Earn Easy Cash

Contact Us

Opening Times:

Monday: 9:00 AM–4:00 PM
Tuesday: 9:00 AM–4:00 PM
Wednesday: 9:00 AM–4:00 PM
Thursday:  9:00 AM–4:00 PM
Friday: 9:00 AM–4:00 PM
Saturday:  Closed
Sunday: Closed

Call (314) 277-5952

Directions

We recently moved our showroom to Earth City. It’s easy to find us, take I-270 north, then west on I-70, then north on Hwy 141.

Directions to STL Windows and Doors

If you need window installation (or door) across St. Louis Metro Area, count on us to deliver a satisfying experience replacing your windows and doors.

  • Affton
  • Arnold
  • Augusta
  • Ballwin
  • Barnhart
  • Brentwood
  • Bridgeton
  • Cedar Hill
  • Chesterfield
  • Clayton
  • Concord
  • Cottleville
  • Crestwood
  • Creve Coeur
  • Dardenne Prairie
  • De Soto
  • Defiance
  • Des Peres
  • Earth City
  • Ellisville
  • Eureka
  • Fenton
  • Festus
  • Flinthill
  • Ferguson
  • Florissant
  • Foristell
  • Frontenac
  • Glencoe
  • Gray Summit
  • Grove
  • Hazelwood
  • High Ridge
  • Hillsboro
  • House Springs
  • Imperial
  • Kirkwood
  • Labadie
  • Ladue
  • Lake Saint Louis
  • Lemay
  • Lowry City
  • Manchester
  • Maryland Heights
  • Mehlville
  • New Melle
  • O’Fallon
  • Oakville
  • Old Monroe
  • Olivette
  • Overland
  • Pacific
  • Pevely
  • Richmond Heights
  • Saint Albans
  • Saint Charles
  • Saint Louis
  • Saint Peters
  • South County
  • St. Paul
  • Sunset Hills
  • Town and Country
  • Troy
  • Union
  • Valley Park
  • Villa Ridge
  • Warrenton
  • Warson Woods
  • Washington
  • Webster Groves
  • Weldon Spring
  • Wentzville
  • Wildwood
  • Winfield

Helpful Answers to Common Questions

Here are some frequently asked questions about our window installation service.  If you have other questions, please get in touch with us!

The average window replacement cost ranges from $500 to about $1,500 per window, with an average of $800. It all depends on the type of window you are interested in, the quality of that window, and the manufacturer of that window. There will also be installation costs per window. It is best to use our free estimate for an accurate price quote.

We’re biased, but we believe the best company for window replacement is STL Windows and Doors.  Read through our customer reviews to hear what they have to say. We offer the best windows brand and back our window installs with a 10-year workmanship warranty.

Most experts agree that if you have the budget, you will benefit by replacing all your windows at once. If your home is older than 20 years old, it may be time to start budgeting for a complete window replacement in your home.

Free No Obligation ESTIMATE