⭐⭐⭐⭐⭐ 4.8 | 400+ reviews | BBB A+ rating
St. Louis's Most Trusted Window Replacement Contractors
Window Replacement in St. Louis, MO







Proven. Trusted. Backed by Your Neighbors
Professional Window Replacement Services in St. Louis, Missouri
Your home deserves more than just any windows. Whether you’re replacing aging single-pane windows, upgrading to energy-efficient models, or installing new window systems throughout your home, the quality of that installation determines everything. How long your windows last. How well they insulate your living spaces. How much you spend on energy bills. How your home looks from the street. One professional installation done right delivers comfort and savings for decades. One careless installation creates problems you’ll fight for years.
When you’re ready for new windows, you face dozens of decisions that seem overwhelming. Which window styles perform well in St. Louis’s climate? How much insulation does your home need? What glass packages provide real energy savings? Should you upgrade to triple-pane? Do you need Low-E coatings? These aren’t just technical details. They’re the difference between windows that perform beautifully for 25 years and ones that fail in year seven.
Schedule Your Services Now!
Why St. Louis Homeowners Need Reliable Window Replacement
Here’s what separates professional window replacement from amateur work. The windows themselves are only half the equation. How those windows get installed matters just as much as which brand you choose. We’ve replaced countless windows that used premium frames but failed early because someone rushed the installation, skipped critical steps, or didn’t understand proper sealing techniques.
St. Louis’s weather demands more from your windows than most people realize. Spring thunderstorms test every seal’s water resistance. Summer humidity stresses frame materials continuously. Fall wind gusts challenge installation integrity. Winter freeze-thaw cycles push moisture into gaps where poor installation leaves vulnerabilities. Your windows need to handle all of this, year after year, without compromise. That’s why pairing new windows with quality gutter installation protects your entire home from water damage.
The Hidden Cost of Poor Installation
Picture this common scenario. You hired the lowest bidder to install your new windows last year. Everything looked fine when they finished. But now you’re noticing problems. Condensation forming between glass panes during temperature swings. Drafts around frames on windy days. Water stains appearing where moisture seeps through improperly sealed openings. Your beautiful new windows are failing, and the company stopped returning your calls months ago.
Poor installation doesn’t announce itself with obvious signs on day one. It reveals itself slowly through premature failure, costly repairs, and endless frustration. By the time you realize something’s wrong, your warranty claims get denied because “improper installation voids coverage.” You’re stuck paying twice for the same windows.
This happens across St. Louis, Clayton, Chesterfield, and Kirkwood every single month. But it absolutely doesn’t have to happen to you.
St. Louis's Most Trusted Window Replacement Services
Coldstream Exteriors has spent over 25 years installing windows that perform exactly as they should. We specialize in professional window replacement services that solve problems before they start. We’re not here to rush through your project and move to the next job. We’re here to give you properly installed windows with quality materials, experienced crews, and guarantees that actually mean something. Our team also handles roofing services throughout the St. Louis metro area.
Expert Window Replacement for Every Situation
Many St. Louis homeowners come to us with different replacement needs. Maybe you’re finally upgrading those original single-pane windows from the 1970s. Maybe you’re building a new home and want windows done right from day one. Maybe you’re adding a sunroom and need seamless integration with your existing architecture. Maybe your current windows need complete replacement throughout.
Whatever brings you here, you probably have questions. What’s the best approach for your situation? How long will installation take? What can you expect during the process? Will your home be protected during construction?
Here’s exactly what happens. Call us for a free consultation and we’ll come to your property within 24 hours to assess your project. We’ll discuss your goals, explain material options, answer every question, and provide a detailed written estimate. We’ve installed hundreds of windows across St. Louis, and we know exactly what it takes to deliver results you can count on for decades. If storm damage affected your windows, we can help with insurance claims too.
Need more than just expert window installation? Protect your entire home with professional siding services that complement your new windows beautifully!
Our Services
Residential Roofing
Roof Types
Commercial Roofing
Siding
Windows
Gutters
Garage Doors
Our Proven St. Louis Window Replacement Process
A Window Replacement Process That Works
Step 1Contact Us for Your Free Project Consultation
Step 2Detailed Home Assessment and Window Review
Step 3Transparent Written Estimate You Can Understand
Step 4Expert Installation by Experienced Crews
Step 5Final Inspection and Thorough Property CleanupFrequently Asked Questions About Window Replacement in St. Louis
How much does window replacement cost in St. Louis?
Most St. Louis window replacements range from $400 to $1,200 per window, depending on size, style, and glass package. A typical whole-home replacement with 15-20 vinyl double-hung windows averages $8,000-$18,000. Premium fiberglass frames or triple-pane glass cost more. We provide detailed written estimates after your free consultation, and you pay nothing until installation is 100% complete.
How long does window replacement take in St. Louis?
Most residential window replacements take 1-3 days with our experienced crews. A typical home with 10-15 windows can often be completed in one day, while larger homes with 20+ windows typically take 2-3 days. New construction timelines coordinate with your builder’s schedule. Weather conditions can affect the timeline.
What window materials do you recommend for St. Louis homes?
Vinyl windows are most popular for St. Louis homes, offering excellent energy efficiency, low maintenance, and 25-30 year lifespans. Fiberglass provides superior strength at higher cost. Wood offers classic aesthetics but requires more maintenance. During your consultation, we show you samples and explain which materials work best for your home and budget.
Do you handle window replacement for new construction projects?
Yes, we work with homeowners, builders, and contractors on new construction window installation throughout St. Louis. We coordinate with your construction timeline, deliver materials on schedule, and install your window systems according to code requirements and manufacturer specifications.
Should I replace all my windows at once or just a few?
Whole-home replacement typically delivers better value through volume pricing and consistent appearance. However, if budget is a concern, we can prioritize the most problematic windows first. North and west-facing windows often show the most wear. Consider pairing window replacement with roof replacement for maximum energy savings.
What makes Coldstream Exteriors different from other St. Louis window companies?
You pay nothing until your window replacement is 100% complete and you’re satisfied. No deposit, no progress payments, no financial risk. We’ve earned our BBB A+ rating and 4.9 stars from 400+ customers by treating St. Louis homeowners right for over 25 years.
How do I prepare my home for window replacement?
We handle most preparation, but homeowners should move furniture three feet away from windows being replaced, remove window treatments, clear pathways to work areas, and secure pets during installation. We’ll provide a complete preparation checklist before we start.

Coldstream Exteriors Is Here For All Your St. Louis Window Replacement Needs!
Experienced & Certified Window ProfessionalsFree Consultations & Transparent EstimatesServing St. Louis, Clayton, Kirkwood & Surrounding Areas For Over 25 YearsManufacturer-Certified InstallationComplete Property Protection During ConstructionComplete Exterior Services In St. Louis & Surrounding Areas
Protecting St. Louis homes for over 25 years
OUR SERVICE AREA
Coldstream Exteriors proudly serves St. Louis and surrounding communities with quality window replacement services. If you are in the following cities, you can count on us for reliable window replacement:
Don’t see your location? Call us at (314) 380-8111.
Get Your Free St. Louis Window Replacement Consultation Today
Ready to protect your home with professionally installed windows that last? Contact Coldstream Exteriors for a free consultation and honest assessment. Our St. Louis team will show you exactly what your project needs, explain all your options, and provide a transparent estimate. No deposit required, no payment until completion, no pressure. Just trusted service from local contractors earning five-star reviews for over 25 years. We also specialize in hail damage repair for storm-damaged homes.
