Replacement Windows in Boulder, CO

At Gravina's Window Center of Littleton, we understand that Boulder is known for its environmental awareness. Why not consider energy-efficient window replacement for your home in Boulder? Infinity from Marvin windows are designed to last a lifetime, so you won’t have to worry about replacing them again or contributing to local landfills.  Infinity Windows are made from Ultrex, Marvin's patented fiberglass, which is made from abundant silica sand.  Ultrex is a pultruded fiberglass, whose tensile strength is stronger than steel. 

With numerous jobs around the Boulder area, we have a reputation for installing the highest-quality and most energy-efficient windows. So, if you are going to upgrade to new windows or doors, do it with a conscience. Please consider our Infinity from Marvin Windows. We are the company that will ensure your project gets done right the first time - and the last time.

What makes Infinity from Marvin stand out?

• Durable Ultrex® Fiberglass Crafted with pultruded fiberglass, Infinity windows boast tensile strength stronger than steel, ensuring they will withstand Colorado’s challenging climate.
• Energy Efficiency You Can Trust Infinity Windows are designed to reduce energy loss, keeping your Boulder home comfortable year-round while lowering utility bills.
• Low Maintenance and Long-Lasting Performance Ultrex® fiberglass resists warping, cracking, and fading, providing a low-maintenance solution for many years to come.
• Sustainable Materials Built with sustainability in mind, Ultrex® uses a renewable resource—silica sand—minimizing its environmental footprint.

Our Reputation in the Boulder Area

We have established a strong reputation for excellence through numerous successful window installations in Boulder and the surrounding areas. Boulder homeowners trust Gravina’s Window Center of Littleton to provide the highest quality, energy-efficient windows and doors, along with expert installation. Our company is committed to ensuring every project is completed correctly the first time, offering peace of mind and lasting results.

Upgrade with a Conscience

If you plan to upgrade your windows or doors, choose a company that shares your commitment to sustainability and quality. Infinity from Marvin® is the replacement window that lasts a lifetime, combining strength, performance, and eco-friendly materials. With Gravina’s Window Center of Littleton, you’re partnering with experts who value the environment as much as you do.