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    Window Materials

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    Project Calculator

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    Free Installation Myth

    What it really means on your window project

    Buying Made Easy

     

    No matter how big or small your window or door project, we provide free in-home consultations to help you choose the right window and door products and services with no pressure. You can also stop in our Davenport showroom to see full size samples of some of the many window styles and colors we have to choose from. Learn More

    Flexible Payment

     

    We want to make your window and door replacement project simple and affordable. That’s why we’ll work with you to come up with a budget and payment plan to fit your needs. Our local financing partners can assist with the affordable financing needed to make your window project a reality. Learn More

    Professionally Installed

     

    We want to make sure your new or replacement window or door project is convenient, easy and done right for superior long term performance. We’ll work with you to set up the best time for our professional window installation team to complete your work on time and to our exacting standards. Learn More

    Guaranteed Quality

     

    We’re sure you’ll be very happy with your windows and doors but we stand behind our products to give you that extra level of confidence. All of our lines include industry-leading warranties so you can expect the same exceptional performance throughout the life of the product. Learn More

    Current Specials!

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    What Our Customers Are Saying

    • Services Are Top Notch!

      In May of 2019, Seiffert replaced 33 windows and 6 doors at our house in Davenport with new Marvin units. We wanted the new units to look like the old Pella windows complete with inner wood trim and the same exterior finish as the existing. Jeremy from Seiffert's QC Windows team spent a great deal of time with us investigating the windows we had and working with us and Marvin to arrive at the optimal solution. The new windows and doors all fit perfectly and look great. We worked with Silver Creek Construction on the installation and they did a superior job.

      Richard J McInnis

    • Love working with these guys

      They offer top quality products accurately and quickly. Whatever your needs, you deserve the highest quality products from a real, honest, local, and reliable company.

      Josh Bolkema

    • The attention and customer service we received was outstanding!

      Chuck and I want you to know how happy we are with our new windows. The attention and customer service we received was outstanding! The installers did a great job with our siding as they replaced the back windows. Thanks to you and the boys!

      Marilyn Buel

    • Incredibly Helpful

      Seiffert offers a great line of quality products and really friendly and knowledgeable staff. We've worked with them on a couple different projects and were really pleased with the materials we purchased but even more so with the incredible service. They go above and beyond your expectations!

      John Howard

    • We’re VERY happy with the windows and the service!

      Our 1926 home need replacement casement windows which had to open in because of outdoor awnings and Marvin WIndows were the only company who could provide them. Jeremy at Seiffert was great! He answered every question I had and took care to exactly measure every window opening as they weren't uniform. The windows arrived when promised and our installer braved the cold weather to remove the old windows and install the new ones. We're VERY happy with the windows and the service!

      Faye Waterman

    • Keep Up the Great Work!

      My Marvin Windows are the showpiece of my 1940 house. I asked that the original windows be duplicated to match the integrity of the house and Marvin answered the call. Not only did they do a beautiful job on the two corner windows that face each other but the finish on the inside was matched perfectly to my inside trim. I also love to stand in front of them and watch the snow fall and not feel one degree of cold coming in! The bedroom windows were done in the Integrity Line and were also a delight. Thank you Marvin and Seiffert....keep up the great work.

      Pami Triebel

    SPECIAL OFFERS

    We currently have two special offers from which to choose. Click for details.

    $500 Off Your Project

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