St. Peters Window and Door Replacement
STL Windows and Doors installs ProVia replacement windows and exterior doors for homeowners in St. Peters, Missouri.
Replacing windows or exterior doors in St. Peters requires a building permit. When the city adopted the 2021 International Residential Code in December 2023, it rewrote the list of permit-exempt work in full, and neither windows nor doors appear anywhere on it. The only window-related exemption left is a window awning projecting less than 54 inches from the wall.
Which means your installation gets inspected. That is worth knowing when you compare quotes, because a crew that treats the permit as optional is a crew whose work has never been checked by anyone.
We pull the permit and meet the inspector. St. Peters takes permit drawings in digital format, and the building department can charge up to a dollar a page to convert paper plans, so there is no reason to be handing paper across the counter. Starting work before the permit is issued carries an additional fee under the city fee schedule, which is small, avoidable, and entirely on us to avoid.
St. Peters Window Replacement
For your windows, the number that actually governs the job in St. Peters is the fenestration U-factor. The city caps it at 0.35. Every ProVia window we install is rated at or below that, so compliance never becomes your problem.
St. Peters sits in Climate Zone 4A, where the city sets no solar heat gain limit at all. That is genuinely useful to you: it means you can choose glass that lets winter sun into a south-facing room rather than being pushed into a low-gain coating that a hotter climate zone would force on you.
St. Peters Door Replacement
Exterior doors fall under the same permit rule. We replace front entry doors in fiberglass and steel, sliding glass patio doors, French doors and storm doors, all ProVia, all measured to your existing opening rather than cut down to fit it.
If the property is a rental, there is a second thing worth knowing. St. Peters requires a re-occupancy inspection on non-owner-occupied dwellings. Windows that will not open, will not latch, or have failed seals are exactly what gets written up. If you own rental property here, it is cheaper to handle before that inspection than after it.
Why Choose STL Windows & Doors
- 10-year workmanship guarantee: Every job is backed for a full ten years. If something isn’t right, we’ll come back and fix it at no cost to you.
- In-house, factory-trained installers: We don’t subcontract. Our own certified crew installs every ProVia product, keeping your warranty valid and your windows performing correctly.
- On-time and reliable: We show up when we say we will, communicate with you throughout the job, and treat your home with care from first visit to last.
- Free in-home consultations: We’ll visit your home, measure carefully, and walk you through your options honestly, with no pressure and no hidden fees.
- BBB Accredited Business: Accredited with the Better Business Bureau under our Earth City address, where our rating and complaint history are public.
What Do St. Peters 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.
★★★★★
Great people to work with, the bid was honest reasonable. the windows seem to be of high quality and look great. The installation was first class!Tony and Hanna installed them and they know their stuff, very clean,very neat job. I will refer them to everyone. THANKS.
Rick Uelk
Google review
★★★★★
We were exceptionally pleased with our experience and love our new door. Our salesman was kind, and helpful, the workers explained every thing they were doing, ask if we had any questions, gave us helpful information and were very personable. I would recommend their product and their service to anyone desiring or needing a new door.
LaWanna Moss
Google review
★★★★★
I ordered a sliding glass door from STL Windows and Doors and Hannah was our technician, she was awesome!!! She took the time to explain what she was doing and the proper care and maintenance of my new door. The finished door is beyond beautiful. Can’t say enough good things about this amazing company and the exceptional service.
Christi Korn
Google review
Basement Bedrooms and the St. Peters Egress Rule
If you are finishing a basement here, or replacing a window in a basement room that anyone sleeps in, St. Peters is specific. The city requires an egress window measuring five square feet in its open position, with the sill no more than 44 inches above the finished floor.
Read that first number carefully, because it is the one that costs people money. Five square feet is the opening you get when the window is actually open, not the size of the hole in the wall. A slider dropped into the same rough opening will not always clear it. We measure the open dimension before anything is ordered, which is why our basement and hopper window orders do not come back to be redone.
On cost: we do not publish one price per window, because the figure moves with size, style, glass package and how many openings you are doing at once. What we can do is show you how the pricing works before anyone visits. Our Window Replacement Buyers Guide sets out what drives the number, and financing is available if you would rather spread it.
The installation carries a 10-year workmanship warranty from us, on top of the limited lifetime transferable product warranty on the ProVia units themselves. The crew that quotes it is the crew that installs it. We do not subcontract.
Design, Order, Install, Inspect
Our Simple But Proven Process
Talk with a Pro
Call or message and you will speak to someone who installs these for a living, not a call center.
Onsite Assessment
We measure every opening at your home, including the open dimension on any basement window that has to clear the city’s five square foot egress rule.
Deliver Your Estimate
You get an itemized estimate showing the U-factor of the units, so you can confirm the 0.35 cap is met before you sign anything.
Get a Free Quote
Ready to find out what new windows or doors would cost for your home? Request your free estimate today.
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.
