The Window Foundry

The Window Foundry is a Denver-based window company specializing in custom-designed Lumen windows engineered specifically for Colorado's climate. Founded by Shane Leever, a veteran of the window industry with Harvard-recognized expertise, the company combines advanced triple-pane technology with factory-trained installation by their Signature Series Installers. Every window comes with a lifetime transferable warranty and is backed by a 25-year workmanship guarantee, designed to deliver superior energy efficiency, durability, and comfort year-round.