ABOUT GLASFËNS

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GlasFëns Window Systems USA is a supplier of high-performance windows, doors, and façade systems for buildings across North and South America. Our focus is fiberglass, with thermally broken aluminum for hurricane and high-wind applications, all based on proven European systems and fitted with German hardware. We exist to do one thing exceptionally well: deliver energy-efficient fenestration that performs at the highest level, approaching zero.

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We build lasting relationships with developers, architects, contractors, and glazing contractors by pairing our products with real industry knowledge and hands-on support. We're not just a supplier; we're a partner through specification, value engineering, and delivery, helping projects hit their performance targets without surprises along the way.

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Our systems serve every sector, from single-family and multi-family residential to commercial, hospitality, prefab, and Passivhaus-certified construction. Each one is engineered to order and built to the most demanding standards of thermal performance, security, acoustics, and design. Our flagship fiberglass and vacuum-glass system reaches a whole-window U-value of 0.045 (R-22), with vacuum-glass IGUs standard across the range.

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Our components come from manufacturers who have been producing window and door systems for generations, recognized leaders across Europe, with hardware and components sourced largely from Germany, Belgium, and the Netherlands. That precision and attention to detail is what makes a GlasFëns system perform, quietly and reliably, for decades.