We reimagined how windows should be built -
for modern homes, real-life weather conditions, and homeowners demanding nothing but the best.
Windows designed for Colorado's climate
Modern engineering meets timeless design
Master the Elements
Our triple-pane glass and gas-filled chambers are engineered to keep you comfortable year-round, from snowy winters to blazing summer days.
Energy Efficiency
Drastically reduce your heating and cooling needs with Lumen’s advanced design, providing unmatched insulation and lower energy bills.
Built to Endure
Each window is designed with a 25+ year lifespan and comes with a transferable lifetime warranty for ultimate peace of mind.
We know your home deserves the very best.
That’s why we’ve handpicked our Signature Series Installers, a trusted team of master craftsmen renowned for their expertise and precision. Factory-trained and highly experienced, these professionals are held to the strictest standards in the industry.
From creating airtight seals to delivering seamless finishes, every window is installed with meticulous care and respect for your home.
When you choose The Window Foundry, you’re choosing trust, craftsmanship, and performance you can feel—not just see.
"The team exceeded our expectations in every way.”
"Their professionalism, attention to detail, and craftsmanship were truly unmatched. We couldn’t be happier with the results!"
-Dan & Karin Tweten
A better home, a better future
Your window upgrade starts here
Free Consultation
Tell us about your unique needs, and we’ll create a tailored solution just for your home.
Expert Design Recommendations
Choose from a variety of styles, frame colors, and performance add-ons that perfectly fit your vision.
Professional Installation
Our Signature Series Installers ensure your Lumen windows are installed with precision and care, so you can trust your upgrade will last a lifetime.
On a Mission to Build Something That Lasts
Shane Leever founded The Window Foundry after over a decade of expertise in the window industry. As a former Senior Sales Partner and Head of Business Development, his work has been recognized by respected institutions like the Joint Center for Housing Studies at Harvard.
The Window Foundry is the culmination of years of experience, dedication to craftsmanship, and strong industry partnerships. Under Shane’s leadership, we've teamed up with one of the largest window manufacturers in the country to create custom-designed products tailored specifically for Colorado’s unique climate. Every installation is handled by factory-trained professionals and backed by an industry-leading 25-year workmanship and product warranty.
We are on a mission to build something that lasts, for every customer and for the community we serve.
The Foundry Founders Program
Be among the first to showcase the Lumen Series in your neighborhood and unlock exclusive perks, like priority pricing, lifetime warranties, and red carpet service. Spots are limited, so act fast!
Love Your Windows for Decades to Come
Choose windows that transform your home and your energy bills. With The Window Foundry, you’re not just replacing windows; you’re making an investment in comfort, style, and sustainability.
Be part of something better.
Your Questions, Answered
Unlike standard two-pane windows, Lumen uses triple-pane glass with advanced gas fills and airtight construction, ensuring maximum energy efficiency and durability. Plus, every window is Colorado-engineered to handle extreme weather.
Absolutely. All our windows include a lifetime transferable warranty against defects and performance issues, and an additional 10-year fade-resistance warranty for color finishes.
Most installations are completed within a day by our expert Signature Series Installers, ensuring minimal disruption to your home and routine.
Lumen windows are designed to exceed industry standards for energy efficiency. They help reduce your reliance on heating and cooling systems, leading to significantly lower energy bills year-round.
It’s simple. Click the button below to schedule your free consultation with our team of experts.