Superior Home Improvement Contractors in the Quad Cities Area

We strive each day to be a great company, period. Not just a great home improvement company. We offer top quality windows, gutters, gutter covers, roofing, and more. Plus, our work is guaranteed!

Real Customer Testimonials

After 20+ years in the industry, we have served thousands of satisfied customers. Browse through our customer testimonials to see why we’re still their #1 choice.

Your Questions Answered

We think it’s important for you to understand the why when making home improvements. Here is a list of the most common questions answered for your convenience.

Flexible Financing Options Available

Replacing your windows or roof can be financially intimidating. Have peace of mind with our flexible financing options on our replacement & installation services.

Window Replacement & Home Improvement Services

Mainstream Home Improvement has been the preferred option for homeowners in Davenport, Bettendorf, Moline, and Rock Island for replacement windows, gutters and gutter covers, roofing, and more since opening in 2001. Since then, we have proven our passion for customer service and quality results which have made us the top choice for residential properties in the Quad Cities and nearby. Our team will help with your home improvement project from start to finish. Our representatives will help you select the best products to match your immediate needs, then schedule the project on a day and time that works for you. We guarantee an accurate – no surprises – estimate and will make sure your replacement windows, gutters, roofing, siding, or any other project fits your budget. If you’re ready to begin your home improvements, call our office right now and schedule your free no obligation consultation.

Why Choose

Mainstream Home Improvement

Our carpenters and installers have decades of experience in the home improvement industry. They have the experience you expect from a professional home improvement contractor that has been in business for over twenty years. Our team delivers quality results on windows, gutter, gutter cover, roofing, and siding projects. When choosing Mainstream Home Improvement for your installation or replacement service, our project managers offer you their undivided attention. They will focus on making sure your project is completed to your satisfaction and within your budget. Here are just a few of the top reasons why you should choose us for your home improvement job.


Customer Service

Our reviews are from real people. We take customer service seriously. We treat you the way we want businesses to treat our family. The Quad Cities is home for us too, so we walk the walk. 


Quality Products

We offer the highest quality products. Each of those manufacturers guarantees their products will last and will stand behind them.


Expert Installation

We have been installing home improvement products for over twenty years. Our installers are factory certified and know the latest standards. We abide by local building codes and do things correctly.


Superior Teamwork

We offer a five year workmanship guarantee. What does that mean? It means that if we install something incorrectly then we will fix it and make it right.

Our Services

Mainstream Home Improvement provides a wide range of installation and replacement services for your windows, gutters, gutter covers, roofing, siding, and more. Get in touch with us, Your Quad Cities Home Improvement Contractor.


Need new windows for your home? We are experts in window installation and replacement services. Learn more about our window options.


Prevent water damage on your property with new gutters from our home improvement experts. We install and replace gutters in the Quad Cities area.

Gutter Covers

Our gutter covers are long-lasting and offer the ultimate protection against leaves, debris, and pests. Protect your gutters with our cutting-edge covers.


Keep your family and home protected with a roofing replacement or roofing installation service from our team. We offer several roofing options to choose from.


If your siding is cracked or is no longer protecting your home, Mainstream Home Improvement specializes in siding replacement and installation.

Patio Doors

Our patio doors are the perfect solution to how you access your outdoor space. Bring in natural light and improve the flow of your home with our sliding doors.

What Our Customers Are Saying

I really appreciated how quick and easily explained the process of a new roof and windows happened. As a single woman, I was really nervous but everything went as was presented. I have already recommended Mainstream to four people.

Mary Ellis
Rock Island, IL

My wife and I did totally appreciate the Quality work and the courteous manner in how Mainstream did our new windows. The product is of excellent quality and I personally can already see a significant difference in the ‘draft free home.’ Thank you Mainstream.

Ed Earnest
Moline, IL

We are extremely happy with the service we’ve received; from the initial meeting all the way to the follow-up customer service. The installers were great, and Spencer & Dave seemed to genuinely care about our satisfaction. We will definitely recommend you to anyone. I love the new windows!

Joe & Lynn Boley
East Moline, IL

We could not be happier with our new windows and door! Each member of your company that we have worked with has been very kind and put our satisfaction as a top priority. Our windows look beautiful. We appreciate your friendliness and the follow-ups after the work was done to ensure we were satisfied. We will definitely recommend your company to our friends and will use you for home improvement projects in the future! Thank you

Tim & Tracy Wren
Davenport, IA

Frequently Asked Questions

We Answer Real Customer Questions About Our Home Improvement Services

Before starting a home renovation project, our company wants to ensure that you get all of your questions addressed. Check out some of the most frequently asked questions and actual answers from our Mainstream Home Improvement staff. Is your question not answered here? Don’t worry – our office manager has years of expertise with our windows, gutters, roofing, and siding services and can provide you with all of the information you need to set up an initial assessment!

Why do some contractors offer low estimates & charge you double after a project?

This tactic is called a pricing game. Pricing games occur when a contractor offers you a very cheap price for their services to persuade you to invest in their company. This enables them to provide you with what you paid for, which is often lesser quality for half the price and assured future troubles. Mainstream Home Improvement pledges to offer you honest estimates that always display the exact price, with no pricing games along the way, to ensure that you receive excellent work within your budget.

You guys have a lot of glowing reviews. Why can’t I find customer reviews on other companies’ websites?

We’d like to think our reviews come from our passion for customer service, however, we know that there are tons of home improvement companies that provide the same level of service. When it comes down to it, our team feels that our evaluations are merely a result of our expertise and a broad variety of services. Our professionals are committed to delivering flawless roofing, siding, window, door, and gutter services while ensuring all of your questions are answered every step of the project.

Do you do any final checks on your home improvement projects?

Absolutely. Before allowing homeowners to view their freshly completed project, our project managers like to do a last walkthrough to ensure that everything is in order. We usually advise that it’s best to have many pairs of eyes check over an installation or replacement project. Most of the time, if anything has to be changed, our project managers will notice it during the final inspection. This is simply another technique to guarantee that your job is executed flawlessly and to your great satisfaction.

Our Awards

Mainstream Home Improvement is honored to have won several awards based on customer satisfaction, work ethics, and the integrity of our business. View our current awards to date!

better business integrity awards logo

Mainstream Home Improvement Wins 2004 Better Business Bureau Integrity Awards

Mainstream Home Improvement Wins Score's Business Of The Year Award

Mainstream Home Improvement Wins The Rock Island Recycling Award

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