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Tucson, Arizona
Keep Cool
With Capstone
Custom-built windows and doors from Infinity, harness the
strength of Ultrex fiberglass to bring new life to your home.
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Tucson, Arizona
Experience
Luxury Service
Our Ultrex® fiberglass delivers lasting performance.
8 times stronger than vinyl – protects the integrity of your home.
We specialize in high-efficiency fiberglass window systems, uniquely designed for the most extreme climates. Built to withstand the highest temperatures of the Southwest, this Infinity from Marvin, in partnership with the Capstone family, is the only truly lifetime window replacement option for Arizona. With over a century of manufacturing history and decades of experience in window installation, Capstone Windows guarantees your complete satisfaction. From our family to yours, we thank you for your trust in your window replacement process and look forward to adding another happy customer. Thank you for your consideration! - Small Family
Window replacement is a much more difficult undertaking. Every project we install has different applications and methodology that require years of “hands-on” experience in our tough Arizona climate. Your home is important to us and you can trust we will take care of it.
A local Infinity from Marvin expert will provide a free in-home consultation to discuss style, features and more.
On installation day, they'll arrive at your home to remove the old windows and expertly install your new Infinity windows.
Infinity offers a Limited Lifetime Warranty for as long as you own your home. And we're always here if you have a question.
Browse our complete patio door collection to learn how Infinity fiberglass replacement doors offer both strength and style so you can enjoy seamless living indoors and out. Download our Replacement Guide.
At Capstone by Infinity, we’re committed to be the best window and door replacement company. That’s why we hand-select our local independent partners to provide you with an exceptional window and door replacement experience. Here’s what homeowners have to say about their experiences working with us and their new windows and doors.
