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Location: USA
Settings: Places of worship, Public buildings
Techniques: Enamelling, Painting / staining
Specialisms: Conservation, Restoration & repairs


Roberto Rosa is a Director of Serpentino Stained Glass, Needham, Massachusetts. He joined the studio in 1988 making it his goal to specialize in quality restoration and conservation of historic stained glass windows.

In 2006, Roberto helped found the American Glass Guild (AGG), an international organization dedicated to education in the field of architectural stained glass. He serves on their board and is Chair of its Education Committee. He is also an ICON accredited conservator (ACR), a member of the ICON Stained Glass Group, as well as a member of the British Society of Master Glass Painters' Conservation Working Group. In addition he is a Fellow of the Corning Museum of Glass, and is also a member of the Corpus Vitrearum, USA.

Roberto was recently presented with the American Glass Guild’s “Excellence in Conservation” award. He continues to be hands-on in all aspects of the studio work and is especially happy when he’s at his bench conserving windows.



Conservation of a Dutch roundel, circa 1540 (before and after)
Rhode Island School of Design, Museum of Art, Rhode Island. Diameter 22cm
Frederic Crowninshield, Emmanuel’s Land from A Pilgrims Progress 1899
Emmanuel Church, Boston, Massachusetts. Plated opalescent glass window. 3m x 7.6m
Maitland D. Armstrong, St. John and the Virgin Mary 1901
Grace Episcopal Church, Millbrook, New York. Plated opalescent glass window. 2.7m x 3.3m
Roberto Rosa in his studio with John Johnston's St. Cecilia on the bench
Conserving a plated opalescent glass window
John La Farge, St. John the Evangelist, Christ Preaching and St. Paul 1889
McMullen Museum of Art, Boston College, Boston, Massachusetts. Plated opalescent glass window. 2.2m x 2.7m
John Johnston, St. Cecilia 1886
Morristown, New Jersey Historical Society. Plated opalescent glass window. 1.5m x 2.4m