Cottleville Window and Door Replacement
STL Windows and Doors installs ProVia replacement windows and exterior doors for homeowners in Cottleville, Missouri.
Your home should feel solid, comfortable, and worth showing off. When your windows let in cold air, your front door sticks, or your patio slider stays foggy no matter how often you wipe it, the whole house starts to feel tired. That slow wear chips away at both your comfort and your curb appeal.
STL Windows & Doors handles window and door replacement in Cottleville with one goal in mind, doing the job right the first time. We are a local St. Louis area company and replacement window and door specialists. You get honest recommendations, energy-efficient window options, professional installation, and a free estimate before you commit to anything.
Cottleville Window Replacement
STL Windows & Doors installs replacement windows across the area for both homes and businesses. Whether your glass is fogging, your frames are warping, or your energy bills keep creeping up, we help you choose windows that fit your home, your style, and your budget. This service is a great fit for homeowners and new construction buyers settling into recently built subdivisions.
Cottleville Door Replacement
From front entries to back patios, STL Windows & Doors handles door replacement for residences and property owners throughout the area. We replace entry doors, exterior doors, patio doors, and sliding glass doors with careful measuring and a clean, secure fit.
Homeowners and real estate professionals preparing properties for sale will find this one of the most impactful upgrades they can make.
Why Choose STL Windows & Doors
- ProVia Platinum Dealer: We carry ProVia products and have earned their highest dealer designation, giving you access to premium windows and doors backed by industry leading warranties.
- A+ rating with the BBB: Earned through consistent, honest work across hundreds of projects in the St. Louis metro area.
- Family-owned and operated: We are not a national chain. You work with real people who care about their reputation in this community.
- On-time and reliable: We show up when scheduled, keep you informed throughout, and do not leave you wondering what comes next.
What Do Cottleville Customers Say?
These are Google reviews from our customers, quoted exactly as they were written. Our full Google profile and our Better Business Bureau record are both public, so read the rest of them rather than taking our word for anything on this page.
★★★★★
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)
Jennifer Hartranft
Google review
★★★★★
STL Windows and Doors installed all new ProVia Doors and Windows in my recently purchased home. These Amish built products are amazing quality and show the high standards of the company. The quality of the installation was AWESOME! The attention to detail, professionalism, and speed with which the work was completed was the best I have ever experienced with any contractor! I would recommend them to work in any of my friend or family's homes
Roxanne Meyer
Google review
★★★★★
From start to finish, they were extremely professional and I truly felt they had my best interest at heart. They were time efficient and I felt confident that they would not leave until the job was done to their highest expectation. They have earned a loyal customer and will be going back to them in the future.
Garrick Vanderwal
Google review
Why New Windows and Doors Benefit Cottleville Homeowners
Most homes here are newer than people expect. According to Point2Homes, the median construction year in Cottleville is 2012, with more than half of all housing built during the 2010s. That means many of those original builder grade windows are now reaching the age where seals fail, glass fogs, and efficiency slips. Replacing them restores comfort and trims wasted energy. Energy Star certified windows can lower energy costs by about 12 percent, which adds up fast in a home full of windows across two stories.
Doors matter just as much. With home values in Cottleville averaging around $503,075 according to Zillow, curb appeal and resale value carry real weight in this market. The Zonda 2025 Cost vs. Value Report notes that a steel entry door replacement can recoup up to 216 percent of its cost, making it one of the smartest upgrades you can make before you sell or settle in long term.
Design, Order, Install, Inspect
Our Simple But Proven Process
Start With a Conversation
Reach out and tell us what is going on, whether it is drafts, fog, or a door that will not lock. We listen first and answer your questions honestly.
Free In-Home Visit
We come measure your windows and doors in person, look at how your home is built, and talk through the styles, materials, and efficiency options that fit you best.
Clear, Written Estimate
You get a straightforward quote with no hidden fees and no pressure. Take your time, compare your choices, and decide what works for your home and your budget.
Completed Window and Door Projects
Curious what your home could look like? Browse our gallery of finished window and door projects across the St. Louis area and picture that same fresh, updated look on your own house.
Get a Free Quote
Ready for windows and doors you will actually love? Request your free, no-pressure estimate today and let us get started.
The fine print:
* Cash Discount. All discounts apply to MSRP costs. Discount available once per residence per term. No adjustments can be made on prior sales. Subject to qualifying credit approval. Mention the deal at the time of scheduling your free in-home consultation.
