We are honored to be voted the #1 Window Installer in the Quad Cities year after year by the community we are proud to serve. Being recognized by homeowners across the Quad Cities for window replacement and exterior home improvement means everything to our team.

The Quad Cities' Choice for Window Replacement & Exterior Remodeling

Mainstream Home Improvement proudly serves homeowners across the Quad Cities, including Bettendorf, Davenport, Moline, Rock Island, Eldridge, and surrounding areas.

We specialize in replacement windows, siding, roofing, gutters, and gutter covers, helping homeowners improve the comfort, energy efficiency, and curb appeal with high-quality exterior remodeling.

We are also the exclusive Infinity® by Marvin fiberglass window dealer in the Quad Cities. For homeowners looking for window replacement in the Quad Cities, Infinity windows offer exceptional durability, energy efficiency, and long-term performance. Made from Ultrex® fiberglass, they are built to resist warping, cracking, and fading — even in Midwest conditions. 

Our team takes pride in expert installation and attention to detail, ensuring every project is done the right way. 

As a local Quad Cities company, we’re your neighbors — honest, reliable, and here when you need us. 

Expect a Beyond 5-Star Experience When Choosing Mainstream

At Mainstream Home Improvement, our goal is simple — deliver an experience that is beyond 5 stars. 

From the first conversation to the final result, we focus on clear communication, attention to detail, and making sure every homeowner feels taken care of throughout the entire process. We don’t believe in just getting the job done — we believe in doing it the right way. 

Our goal is that every homeowner walks away 100% confident in their decision and proud of the investment they made in their home. 

We’re always listening, always improving, and always working to raise the standard for home improvement in the Quad Cities. 

Mainstream Mission, Vision & Core Values 

Mission:

We enrich the lives of our homeowners, team members, and community by acting with the utmost care and efficiency. We pay close attention to details and needs, always working with pleasure, humility, and care. 

Vision:

We are a company that consistently delivers an experience that is beyond 5 stars. 

Core Values: 

• Clear & Open Communication

• Others First

• Up-Tempo

• Prepared For Tomorrow

•Done with Pleasure

• Making Change Be Stress Free 

Licensed, Bonded & Insured

Mainstream Home Improvement carries property, general liability, automobile, and workers compensation insurance. Companies must have proper insurance or they run the risk of going out of business. Homeowners could be held responsible for accidents on their property if a company does not carry proper insurance. 

Quad Cities Window & Exterior Remodeling Experts

If you’re searching for window replacement in the Quad Cities, Mainstream Home Improvement is proud to be a trusted local choice for replacement windows, fiberglass windows, siding, roofing, and gutters. As the exclusive Infinity by Marvin dealer in the Quad Cities, we provide homeowners in Bettendorf, Davenport, Moline, Rock Island, Eldridge, and surrounding areas with high-performance products designed for long-term durability, energy efficiency, and curb appeal. 

Whether you're looking for new windows in the Quad Cities or a full exterior remodel, our team is here to deliver expert installation and a customer experience that goes beyond expectations. 

Ready to get started? Contact Mainstream Home Improvement today to schedule your free estimate and see why Quad Cities homeowners continue to trust us with their homes. 

Awards & Achievements

• Locals Love Us #1 Window Installer - Quad Cities
• Exclusive Infinity by Marvin Dealer - Quad Cities Area
• Better Business Bureau Integrity Award
• Keeping Rock Island Beautiful Award - Recycling Shingles Program
• SCORE Small Business of the Year Award
• Owens Corning Preferred Contractor
• Featured in Quad City Business Journal Top 40
• Thousands of references
• Malarkey Emerald Pro Contractor
• Malarkey Certified Residential Contractor

• Better Business Bureau 
• Chamber of Commerce 
• Quad Cities Homebuilder's Association 

• Sacred Heart Food Pantry
• St. Anthony's McAnthony Window
• Holy Family Davenport
• L'Arche Clinton
• Local Girl Scout Troops & Youth Organizations
• Area Sports Teams
• Area Schools