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25 Years
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Trusted Window Contractors in Moline, IL
Since 2001, Mainstream Home Improvement has been the leading window replacement specialist serving the Quad Cities area. Our expertise in professional window installation and commitment to exceptional customer service have earned us the distinction as the top-rated window contractor in the region. We specialize in high-quality replacement windows that reduce energy costs and enhance home value, along with comprehensive siding, roofing, and gutter services with guaranteed workmanship. Our team of factory-certified installers has over twenty years of experience and adheres to local building codes to ensure correct installations.

We offer a five-year workmanship guarantee and partner with manufacturers that provide lifetime warranties on products. Our dedication to customer satisfaction is reflected in thousands of positive reviews from homeowners across Western Illinois and Eastern Iowa. We prioritize transparency, offering honest estimates with no pricing games and maintaining open communication throughout every project. Our focus on quality products, expert installation, and superior teamwork has made us the trusted choice for home exterior upgrades in the Quad Cities metro area.
Services
Window Installation Siding Replacement Roofing Services Gutter Installation Gutter Covers Patio Door Installation Storm Damage Repair Energy Efficiency Upgrades 3D Home Design Financing Options
Details
  • Year established: 2001
Highlights and features
  • We have over 20 years of experience in home exterior improvements.
  • Our installers are factory-certified with adherence to local building codes.
  • We offer a five-year workmanship guarantee on all installations.
  • We provide honest estimates with no hidden pricing games.
  • We maintain a 98% customer satisfaction rate across 1,000+ projects.
What people say
Great crew and helpful Beautiful job siding our house Awesome roof installation Excellent gutter service Professional and knowledgeable staff
Services
Window Installation
Our professional window installation service enhances home energy efficiency and curb appeal. We offer Marvin Infinity Windows with 20% off current projects and free upgrades to black windows. Our factory-certified installers complete most window replacements in 1-3 days with minimal disruption to homeowners. All installations come with a five-year workmanship guarantee and manufacturer warranties.
Siding Replacement
We provide durable Celect Siding replacement solutions that protect homes from weather damage while improving aesthetics. Our professional installation ensures proper fit and longevity, with options available to match various architectural styles and budgets. Customers consistently praise our clean workmanship and attention to detail.
Roofing Services
Our comprehensive roofing services include installation, replacement, and storm damage repairs using Malarkey Shingles. We offer complete tear-off services and guarantee our workmanship, with customers reporting excellent results and professional crews that maintain clean job sites throughout the process.
Gutter Installation
We install seamless gutters and Leaf Exterminator gutter covers to protect homes from water damage. Our systems prevent debris buildup while maintaining proper water drainage. Customers appreciate our efficient installations and the durability of our gutter protection solutions.
Patio Door Installation
We specialize in energy-efficient sliding patio door installations that improve home aesthetics and functionality. Our professional installation ensures smooth operation and proper sealing, with customers reporting significant improvements in energy efficiency and satisfaction with our courteous installation teams.
Questions
What home improvement services do you offer?
We specialize in window installation, siding replacement, roofing services, gutter installation, and gutter cover systems for residential properties.
Do you provide financing options for home improvement projects?
Yes, we offer financing solutions including 0% APR options for qualified customers to make home improvements more accessible.
What areas do you serve?
We serve the entire Quad Cities metro area including Davenport and Bettendorf, IA, and Moline and Rock Island, IL, plus surrounding communities.
How long does a typical window installation take?
Most window replacement projects are completed in 1-3 days depending on project size, with some larger jobs finishing 15 windows in a single day.
What warranties do you provide?
We offer a five-year workmanship guarantee and manufacturer warranties including lifetime coverage on select window products.
Videos
Reviews (4)
Jamie Drake
Jun 25, 2022 Report
Mainstream replaced my gutters and it looks great! They didnt leave any mess which makes me incredibly happy. They were very nice and respectful. Outstanding experience! So happy i went with this company! Looking forward to working with them in the future!
Adam & Megan Baird
Jun 19, 2022 Report
Mainstream Home Improvement did a wonderful job. They were professional and vey knowledgeable. They got us in right away. I have called so many companies trying to get estimates and repairs with no calls back or told my job wasn't big enough. Mainstream Home Improvement took the job and did fantastic work! We will be using them in the future!
Jessica Martin
Jun 09, 2022 Report
I couldn't be happier! The entire team was so professional in every way. The team double and triple checked for nails in the yard after they pulled the old roof off and we still have yet to find any nails! As a mommy who naturally worries about her kids stepping on a nail in the yard, ive been so very happy about this! Also, our roof looks even better than we could have ever imagined! All our neighbors have been saying how great it looks, too! We definitely recommend mainstream! A+++++!
Pritesh Patel
May 25, 2022 Report
I have used Mainstream several times in the past 3 years as I was replacing all of the windows in my home, so a total of 20 windows. The prices are some of the lowest I could find. They didn't try to upsell me on things I didn't need (actually did the opposite for a couple of windows and advised me not to go with a more expensive option), the windows are good quality and make my home look more modern. but the main reason I'm writing this 5-star review is the customer service.

If you have any concerns, they are quick to address them and make sure you are fully satisfied. The installation team was fast and friendly. Two of the most recently installed windows had a couple of issues and Steve came out the next day after I emailed and was able to fix the issues on the spot. I am confident that my windows will be in this home for as long as I live in it, and then will continue to serve the next homeowner long after I have left. Special thanks to Spencer, Marci, Steve, and the whole Mainstream crew!