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Window Installation Contractors in St. Louis: Brick Experts & 7-Window Packages
Who This Is For
This guide assists St. Louis homeowners, particularly in South City and North County, who own classic red brick homes. It is designed for residents planning a 7-window update who need to navigate the Cultural Resources Office historic reviews. It also helps homeowners understand the specific masonry skills required to install windows without damaging vintage brick facades.
Key Takeaways
- Brick Expertise: Installing windows in a masonry home requires different tools and sealants than vinyl-sided homes to prevent water leaks and mortar damage.
- Historic Rules: Homes in 63116 often require approval from the Cultural Resources Office to ensure new windows match the historic Divided Lite patterns.
- The 7 Window Standard: Mr. Remodel data shows the median St. Louis project is 7 windows, which typically covers the front living areas of a standard bungalow.
- Incentive Stacking: While Ameren rebates focus on HVAC, upgrading your windows contributes to the air sealing required to unlock those funds alongside the $600 federal tax credit.
St. Louis is defined by its red brick architecture. When you search for window installation contractors in St. Louis, you are likely not looking for a generic vinyl siding installer. You are looking for a craftsman who respects the masonry that makes your home unique. A standard installation crew might try to force a vinyl frame into a century-old brick opening, leading to cracked mortar and drafts.
Our internal data at Mr. Remodel confirms that this market is unique. The median project size here is 7 windows, which is perfect for a strategic partial replacement. Whether you are updating a bungalow in Holly Hills or a ranch in Castle Point, you need a contractor who understands the difference between a rough opening and a brick mold. You need someone who can seal your home tight without destroying its character.
The Brick Mold Challenge
Most window training videos assume the house is framed with wood and covered in siding. In St. Louis City and County, that is rarely the case.
Masonry vs. Siding
Installing a window in brick requires specific expertise. The Brick Mold is the exterior trim that bridges the gap between the window frame and the masonry. If an installer removes the old wood window incorrectly, they can chip the brick or destroy the lintel that supports the wall above.
You must hire a team that uses masonry-specific drills and high-grade polyurethane sealants. Standard caulk often fails to bond to old mortar, which leads to water getting behind the brick and ruining your plaster walls.
The 7-Window Bungalow Package
You do not need to replace every window in your home to see a massive difference. Our data shows that the median project in St. Louis involves 7 windows.

Front of House Strategy
In a typical St. Louis bungalow layout, 7 windows cover the most critical rooms:
- Living Room: Usually 2 or 3 windows facing the street.
- Dining Room: Typically 2 side windows.
- Master Bedroom: Often 2 windows.
By focusing on these specific areas, you improve your curb appeal and comfort where you spend the most time. This strategy keeps the project affordable while solving the biggest challenges.
Historic Compliance: South City (63116)
If you live in Holly Hills, Bevo Mill, or parts of Southampton, you cannot just pick any window off the shelf. The St. Louis City Cultural Resources Office (CRO) has strict standards for street-facing windows.
Simulated Divided Lites
The CRO often rejects flat internal grids because they look cheap and inauthentic. To get your permit approved, you typically need Simulated Divided Lites (SDL). These windows have a 3D grid permanently adhered to the outside of the glass to mimic the look of individual panes.
Mr. Remodel connects you with contractors who know which manufacturers pass the CRO review. They handle the permit application to ensure you do not face fines or a stop-work order.
Efficiency Updates: North County (63136)
In neighborhoods like Jennings and Castle Point, the housing stock is often mid-century brick ranch homes. The original windows are frequently single-pane aluminum sliders that conduct the cold straight into your living room.
The Value Upgrade
Homeowners in 63136 prioritize efficiency. Replacing these metal sliders with modern vinyl double-hung windows can drastically lower heating bills. Vinyl is a natural insulator that stops the thermal bridging common with aluminum frames. This upgrade is one of the most cost-effective ways to improve the comfort of a 1950s home.
Incentives and Tax Credits
While direct rebates for windows are rare, you can still save money by looking at the bigger picture.
Federal 25C Tax Credit
The Federal Income Tax Credits allow you to claim 30% of your project cost up to $600 per year. Since the median St. Louis project is 7 windows, most homeowners will easily maximize this credit.
Ameren Missouri HVAC Rebates

Ameren Missouri offers significant rebates for heating and cooling upgrades. While they may not pay you directly for the window, new windows improve your home's air sealing metrics. A tighter home makes it easier to qualify for the high-efficiency HVAC rebates that can be worth over $500.
Frequently Asked Questions
Do I need a permit to replace windows in St. Louis City?
Yes. St. Louis City requires a building permit for window replacements. If your home is in a historic district or a preservation review district, the Cultural Resources Office must also approve the design before the permit is issued.
Can you install vinyl windows in a brick home?
Yes, but it requires specific installation techniques. The installer must measure the masonry opening precisely and use compatible sealants to ensure a watertight bond between the vinyl and the brick. It is critical to avoid damaging the exterior mortar during removal.
How much can I save with new windows?
Savings vary, but replacing single-pane aluminum windows with Energy Star-rated vinyl windows can save significant money on heating and cooling bills. Additionally, you can claim up to $600 annually through the federal 25C tax credit.
Smart Choices for St. Louis Homeowners
Your red brick home is built to last, and your windows should be too. You need to balance modern efficiency with historic sensitivity. By focusing on a 7-window package, ensuring CRO compliance, and hiring masonry-ready installers, you can upgrade your home without compromising its character.
Whether you are restoring a facade in Holly Hills or sealing up a ranch in North County, local expertise matters.
Need a quote from a brick expert? Mr. Remodel will connect you with St. Louis contractors who know how to treat your home right.