Mainstream Home Improvement has officially celebrated the opening of its brand-new showroom at 915 Middle Road in Bettendorf, Iowa, with a ribbon-cutting ceremony hosted by the Quad Cities Chamber of Commerce. The event marks an exciting new chapter for the company as it expands its presence in the Iowa market, and it comes during a particularly meaningful year: 2025 marks Mainstream’s 25th anniversary in business.
For a company that has spent a quarter-century helping Quad Cities homeowners with window replacements, siding, roofing, and more, opening a second location is a milestone worth celebrating. The timing couldn’t be more fitting.
A Second Location, A Major Milestone
“Opening a second location while celebrating 25 years in business makes this an exciting milestone for our entire team,” the company shared as it welcomed guests, community members, and Chamber representatives to the new space.
The Bettendorf showroom represents Mainstream’s continued commitment to serving homeowners throughout the Quad Cities region, giving Iowa customers a closer, more convenient location to explore their home improvement options without having to cross the river to the company’s Moline headquarters.
Built Around the Infinity by Marvin Experience
While Mainstream offers a full range of services including siding, roofing, gutters, and patio doors, the new Bettendorf showroom was designed with a specific focus in mind: giving customers a hands-on look at Infinity by Marvin fiberglass replacement windows.
As the exclusive Infinity by Marvin dealer in the Quad Cities, Mainstream wanted to create a space where customers could slow down, ask questions, and really get to know the product before making a decision. The showroom gives homeowners the opportunity to see, operate, and compare different window styles side by side, something that’s simply not possible when browsing online or flipping through a brochure.
“We’re excited to have a place where homeowners can come in, see the products for themselves, and feel confident in their decisions,” said Mainstream owner Spencer Sierra.
That philosophy is evident throughout the showroom. Visitors can walk up to real window displays, feel the difference in the fiberglass frames, and see firsthand how Infinity’s narrower sightlines allow for more glass and more natural light. It’s an experience built for homeowners who want to make an informed choice, not just a quick one.
A Celebration Years in the Making
The ribbon cutting itself brought together Chamber of Commerce members, local business partners, and members of the Mainstream team to mark the occasion. It’s the kind of milestone that reflects not just the opening of a new building, but 25 years of relationships built with homeowners across the Quad Cities.
From its roots in Rock Island and Moline to this new chapter in Bettendorf, Mainstream’s growth has been driven by the same principle since day one: helping homeowners feel confident about the improvements they make to their homes.
Visit the New Showroom
The Bettendorf showroom is open and ready to welcome visitors who want to explore Infinity by Marvin windows in person. Whether you’re just starting to research your options or you’re ready to get a project underway, the showroom offers a relaxed, pressure-free environment to ask questions and see the quality for yourself.
Mainstream Home Improvement — Bettendorf Showroom
915 Middle Road, Bettendorf, IA 52722
Phone: (563) 296-9720
Want to see the space before you visit? Take a look at our new Bettendorf showroom and learn more about what makes Infinity by Marvin windows worth the trip.
