Your St Louis Window & Replacement Company

Get Professional Window Replacement & James Hardie Siding Installation in Saint Louis, MO.



We are a top St Louis wood replacement window company.  Our team is skilled in helping homeowners find the best wood windows types and styles for your budget & style.

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Fiberglass windows in St Louis are an excellent choice for your home. Fiberglass windows combing the high end look of wood, are paintable, and are a perfect match for Hardie Siding.

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There is no doubt that vinyl replacement windows are the most popular windows in St Louis and around the country.  Even with the limitation of vinyl, it’s hard to beat vinyl in terms of price and quality. 

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We Install All Types & Styles
of Replacement Windows

Your Trusted St Louis Window Installation Company

Searching for window companies in St Louis, MO? At Hawthorn Home Exteriors, “compromise” isn’t in our vocabulary. We will not lower our standards, because we know that even though our customers may enjoy the initial small price savings, it leads to lower long-term customer satisfaction and subpar performance. This is especially true regarding the products we install… and it’s why we undertook the task of assembling the highest performing window and door collection for St. Louis area homeowners.

Through years of firsthand experience, we’ve researched every window and door brand on the market to pinpoint the few that are worthy of your home. We’re talking top products like Marvin’s groundbreaking Elevate™ fiberglass window and impossibly great ProVia entry doors. Products that don’t just look great but break new ground for customer-enhancing innovation. Plus, we give you options. Fiberglass windows. Vinyl windows. Wood windows. Steel entry doors. Fiberglass entry doors. Patio doors.

If you feel overwhelmed by your options or have no idea what you want, don’t worry.

We will guide you through the product selection process and help you determine the exact right products for your needs and budget—without the industry-standard arm-twisting, sales gimmicks, and pricing games.

Wood Windows

We Help Homeowners Like You Solve Your Window Design Goals

Just about all wood windows look fantastic. You’ll have no trouble finding a beautiful wood window in the St. Louis area. This is why you have to go more than “skin deep” to get high-quality wood windows. You need wood windows that are precision-crafted for peak performance. Wood windows that come with advanced components that will enhance your home’s efficiency. Wood windows that are built to last. Those are the kinds of St Luis wood windows we install at Hawthorn Home Exteriors. We carry premium wooden window brands like ProVia and Marvin because they deliver that classic wood look—with innovative performance features for the needs of modern-day homeowners. 

Fiberglass Windows

St Louis’ Most Experienced James Hardie Siding Remoders

Are you considering fiberglass replacement windows in St Louis? Fiberglass windows offer extreme strength and durability. Because of that additional frame strength, Fiberglass windows also give you options for sleek modern designs with thinner frame profiles, meaning more visibility! Low thermal expansion and will not warp, rust or fade. Or take the best of both worlds with something like the Marvin Elevate windows which offer a Fiberglass exterior with wood interior finish for extreme strength and protection from the harsh climate, with the beauty and warmth of wood on the inside. These features and benefits check all the boxes for us and make fiberglass windows and doors a very solid choice for our customers. 

Vinyl Windows

We Help Homeowners Like You Solve Your Exterior Remodeling Goals

Need St Louis vinyl replacement windows? Vinyl windows are offered by virtually every contractor in the St. Louis area—and many of those vinyl windows deliver very few benefits. Unfortunately for consumers, it can be hard to differentiate a quality vinyl window from a “cheap” one. But that’s our job. We know which vinyl windows have poor efficiency, fragile frames, and lousy performance. And we refuse to sell those brands and windows. But make no mistake, great vinyl windows are out there. You just have to sort through the junk to find them. Either that, or simply give us a call. 

How We Do It

Our 5 Step Process is Easy & Stress Free

At Hawthorn Home Exteriors, we understand that although the idea of transforming your home can be exciting, the though of undertaking an home construction project can be daunting.

So…we’ve simplified the process for you and made it nice and easy!  We take all the stressful and worrying parts of home improvement and organized them into a process.  We take the stressful parts of your plate, and provide you with the guidance you need to turn your vision into reality.

By using the best products on the market, providing professional design help with the latest technologies, and backing our work with our exclusive LIFETIME WORKMANSHIP WARRANTY on in addition to product warranties provided by the manufacturers – you can rest easy from every angle of the project.  We even offer financing to make this project affordable.


Site Inspection

We want to understand your home exterior problems, wants, needs and come up with a rational and functional plan that solves all three, within your budget and provides maximum WOW factor.


Presentation of Proposal

You will receive a detailed proposal with full scope of work, digital design renderings with your chosen color(s) and siding textures, detailed description of products, installation, pricing and project scheduling. Zero hidden fees or smoke and mirrors.


Product Installation

During the installation of your project, our team will communicate with you daily to provide updates, the plan for the next day and answer any questions.


Cleanup & Walkthrough
Work areas fully cleaned and magnetically swept for nails. Final walk with Mark to review, answer any questions and deliver completion packet with all manufacturer warranties in place.


Happiness & Peace of Mind

Transformation complete! Now is the time to show off your awesome upgrades to family, friends and neighbors. You’ll sleep well at night knowing that your project has been completed to the highest industry standards and is backed with a Lifetime Workmanship Warranty.

Why Should You Replace Your Windows?

It’s the Best, Most Durable Siding material on the Market, If It’s Installed Properly!

Improve Efficiency

Warmer Winters

Cooler Summers

Improve Curb Appeal

Reduce Noise

Get a stunning exterior transformation

From the most experienced James Hardie siding installers in St Louis

What Our Clients Say

We contacted Hawthorne Exteriord after we saw one of their stunning transformations in our neighborhood,
best decisionwe’ve ever made.

Are You Interested in Financing?

We’ve Have Financing Options For You!

Get the answers you need

Become an educated buyer to get the best resultss for your goals & budget

Does Hawthorn Home Exteriors offer vinyl siding?

Vinyl siding become a popular option throughout the 90’s and 2000’s for two simple reasons. 1. It was a cheap alternative to wood siding and 2. Offered lower maintenance costs that wood siding. Unfortunately that is where the benefits end. Vinyl is highly prone to fading, especially in darker colors and does not perform well in extreme weather changes, like we have in St. Louis. The return on investment is typically low with vinyl siding as well because it is a known commodity product. Vinyl also has a very basic and “entry level” appearance to it. We prefer James Hardie Siding products that are durable, have a rich long lasting finish and have a proven track record for high performance and return on your investment.

What benefits will new siding offer me?

Aside from transforming the look of your home, new siding can offer many benefits. James Hardie Siding is an excellent moisture management system. We get a lot of humidity, mold and mildew and James Hardie acts as a sealed system on your home. It allows the moisture from the inside to escape but does not allow it to enter and get trapped in the walls, which is what creates mold and rotting of the building structure. 

What is House wrap and do I need it?

Tyvek has long been the Kleenex brand for house wrap and it has become a critical component to your exterior wall performance. Until the last few years, house wrap was not required in residential building codes and most of the homes we work on that were built in the 90’s and earlier have no house wrap or weather barrier installed, which can cause a lot of mold and rotting to the wall sheathing and framing. The concept behind a good house wrap or weather barrier is that it allows the moisture to escape your home but does not allow it to enter. We install a high performance weather barrier (house wrap) on EVERY project to ensure your home is protected and performs like it should. 

Why do so many siding contractors have a bad reputation?

In short, lack of communication. Many contractors are designed to be sales organizations, sell sell sell and keep selling. There tends to be very little thought put into the customer once the contract is signed. This also extends into the installation phase, which is one of the most important and complex components of the relationship between you and your contractor. We recognize that you don’t replace your siding or windows often and want you to feel at ease throughout the process. We communicate with our customers every day while we are working on your home. Not just at contract signing and final payment collection. We work hard so that replacing your siding and windows can be enjoyable, not stressful. 

Do you offer financing?

Yes! We have partnered with multiple companies to provide you with easy financing options, such as 18 months Same-As-Cash and longer, equal payment terms. 

Should I replace my siding or windows first?

Replacing siding and windows at the same time is an excellent idea. It is typically best to replace your windows first and then the siding. We like going in this order because we can ensure an excellent, water and air tight seal around the exterior perimeter of the windows before installing the new siding and trim.

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