Bettendorf, IA Showroom — Experience Infinity by Marvin

Step into our stunning new showroom and see why Infinity by Marvin fiberglass windows are the choice of Quad Cities homeowners.

The Quad Cities' only authorized Infinity^® by Marvin^® dealer. Infinity® by Marvin®

8xStronger
than vinyl

3xThicker Finish
vs. competition

2M+Homeowners
trust Infinity^®

Infinity^® Windows Explore Windows Styles

Show Special Offer Form

25% off
All products

12 months
No interest
No payments

^* Restrictions Apply

Our 25th Anniversary Sale

Home Bettendorf Showroom

Welcome to Our Newest Location

Mainstream Home Improvement is thrilled to unveil our brand-new Bettendorf showroom—a premier destination where Iowa homeowners can experience the quality and craftsmanship of Infinity by Marvin windows firsthand. Located at 915 Middle Road in Bettendorf, our state-of-the-art showroom offers more than just a display space. It's a place where you can see, touch, and compare the windows that will transform your home for decades to come. Whether you're exploring your options or ready to start your window replacement project, our Bettendorf showroom puts the power of informed decision-making in your hands. No pressure, no guessing—just honest expertise and beautiful products you can experience in person.

A Showroom Designed for You

Walking into our Bettendorf showroom, you'll immediately notice the difference. The soaring ceilings and open, airy design create a welcoming atmosphere that puts you at ease. Every detail has been thoughtfully renovated and designed to showcase the quality of our products while ensuring your comfort. We've created multiple consultation areas with comfortable seating, professional meeting spaces, and digital displays so you can explore window options, financing, and design possibilities at your own pace. This isn't a high-pressure sales environment—it's a resource center built around you and your home improvement goals.

See the Infinity Difference

One of the biggest advantages of visiting our showroom is the ability to compare Infinity by Marvin windows side by side with other options. Our display walls feature actual window samples that let you see the real difference fiberglass construction makes. Infinity by Marvin windows feature narrower frames and larger glass areas—which means more natural light, a cleaner sightline, and a more elegant appearance for your home. When you stand in front of our displays, you can see exactly what that means for your own aesthetic. You'll notice the hardware options, feel the quality of the materials, and understand why Infinity windows command the premium they do in the market. This hands-on comparison removes the guesswork from your decision. You're not relying on photos or salesman talk—you're seeing the actual product and the actual difference.

Types of Replacement Windows We Offer

At Mainstream Home Improvement, we pride ourselves on offering a comprehensive selection of window styles to suit every homeowner’s preferences and needs. Our range includes classic double-hung windows, which provide timeless charm and easy maintenance, as well as versatile casement windows that offer excellent ventilation and a sleek, modern look. For those seeking to create a dramatic focal point or expand interior space, our bay and bow windows are perfect choices, offering panoramic views and abundant natural light. We also offer slider windows, ideal for spaces with limited vertical clearance, and awning windows, which are perfect for adding ventilation in rainy weather. Additionally, our collection features patio doors that seamlessly blend indoor and outdoor living spaces, providing both functionality and aesthetic appeal. Whatever your style or requirements, Mainstream Home Improvement has the perfect window solution for your Quad Cities home.

Double-Hung Windows Casement Windows Bay & Bow Windows Slider Windows Awning Windows Patio Doors

Frequently Asked Questions
We Answer the Top Questions Asked By Our Clients

Window shopping can be a time-consuming task, especially when there are several options and styles to choose from. Mainstream Home Improvement is the leading expert in window replacement options and installation services. Browse through some of our most frequently asked questions to see how we can help in your upcoming window replacement project. Can’t find your question here? View our full FAQ or contact our team in the Quad Cities area today.

View Full FAQ

Why do I have condensation on my windows?

Excessive humidity levels in your home is what causes condensation, not your windows. Condensation is proof of excessive moisture in the air, which can actually be fixed with a dehumidifier or the cleaning of your HVAC units by a professional technician. For more information on condensation, please visit AAMA’s website.

How much can I save by switching out my old windows with new energy efficient windows?

This answer varies depending on several factors: the characteristics of your old and new windows, the size of your home, your property’s location, and more. ENERGY STAR® has put together calculated estimates of the energy you are bound to save when replacing a single-pane or double-pane clear glass window. Ask our team for more specifics on how much money you could be saving with our windows.

Why won’t my window sash stay up?

If your window sash won’t stay up, it may be due to the wrong size window being installed or the balance of your window is off. Unfortunately, this fix requires help form the professionals as the repair is different for every window style and manufacturer. Get in touch with our team if you’re having issues with your window sash.

What window warranties do you offer?

As a window dealer of MI Windows and Doors, our window replacement products are all covered under a Limited Lifetime Customer Assurance Warranty. This allows for homeowners to order replacement parts at no additional charge when their MI windows are broken or not operating properly. Some of our windows also come with a Glass Breakage Limited Warranty where new glass can be purchased at no additional cost if your window breaks.

How can I make the window installation process go as smoothly as possible?

To have your window installation process go as smoothly as possible, make sure the opening to your windows has been cleaned before our contractor gets there. Once your custom windows are installed, make sure there isn’t any more work to be done before using your windows. Lastly, take care of your caulk and trim to make sure your windows last as long as possible.

Service Areas for Window Replacement & Installation

Looking for quality energy efficient windows in the Quad Cities Area. Click your city to find out more about our replacement window services in your area