Alpen High Performance Products

Wholesale Building MaterialsColorado, United States51-200 Employees

Alpen High Performance Products is a U.S.-based manufacturer of windows and doors that aims to make high-performance buildings practically buildable. The company emphasizes that openings can undermine wall performance, and it designs thin-glass powered, super-insulating windows and architectural glass systems intended to keep high-performance wall assemblies performing as designed in real buildings and on real job sites. Based in Louisville, Colorado, Alpen positions its products as integral components of modern envelopes rather than standalone commodities.

Its customers include architects, builders, developers, and building scientists pursuing net-zero, Passive House, and other advanced standards, who need durable, comfortable buildings with manageable operating costs. Alpen focuses on constructability as well as thermal performance, offering lighter assemblies and improved installation tolerances that integrate with contemporary envelope design. In early 2026, Alpen announced a partnership with Deceuninck North America to expand its energy-efficient window solutions.

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