Restoration glass provides performance and history

Bauhaus-University Weimar, Van de Velde Building

"The authentic restoration of the two buildings also called for recreating the appearance of the windows used at the time of construction. At the same time, we also put a lot of emphasis on glass functions that are consistent with the latest state-of-the-art technology."— Gerd Zimmermann, rector of the Bauhaus-Universität Weimar.

Bauhaus-Universität Weimar, Bauhaus.Atelier.

The basics: To celebrate the 150th anniversary of Bauhaus-Universität Weimar, Germany, officials had two of the university's historic buildings restored, the Van de Velde building and the Bauhaus.Atelier. Architects working on the buildings relied on restoration glass to create an authentic appearance while meeting requirements for security, performance, solar and UV protection. The Van de Velde building features restored window units, and the Bauhaus.Atelier a restored glass roof.

The players: Owner,Bauhaus-Universität Weimar, Germany; Van de Velde building architects, Pitz & Hoh Architektur und Denkmalpflege GmbH, Germany; Junk & Reich Architekten Planungsgesellschaft mbH, Germany; window supplier, installer,Heider-Wallisch GmbH, Germany; Bauhaus.Atelier roof and wall glazing reconstruction, Ernst Kraus, Germany; glass supplier, Schott AG, Germany.

The glass and systems: For Van de Velde building, insulating glass units with an outer pane of Tikana restoration glass featuring a slightly irregular surface structure and a sun protection coating, krypton gas fill, and an inner float glass pane with heat-resistant coating. To fit in the historic window frames, the IGU thickness is about ½-inch. The Bauhaus.Atelier, originally built in 1886, features a glass roof that required 434 laminated glass panes of different shapes. The glass makeup is an outer glass pane of the restoration glass Restover, several layers of PVB film, and an inner pane of clear glass.