About Us

Welcome to Capstone Windows

Capstone Windows specializes in high-efficiency fiberglass window systems, uniquely designed for the most extreme climates. Built to withstand the highest temperatures of the Southwest, the Infinity from Marvin family 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 project and look forward to another happy customer.

Thank you for your consideration.

The Small Family