David Fixler, FAIA, LEED AP, David Fixler Architecture Planning Preservation

David Fixler, Principal, David Fixler Architecture Planning Preservation, Co-founder  APT Committee on Modern Heritage and a former principal at EYP, specializes in working with historic structures, particularly buildings of the 20th century modern movement. He has guided the renovation of numerous landmark facilities, including Alvar Aalto’s Baker House at MIT, Louis Kahn’s Richards Laboratories at the University of Pennsylvania and the United Nations Headquarters. A frequent writer and lecturer on architecture and preservation, Mr. Fixler has had his design and written work published internationally and has taught and lectured at many institutions and conferences throughout Europe, the Americas and Australia. Mr. Fixler is a Fellow of the American Institute of Architects, co-founder and president of DOCOMOMO-US/New England, a Peer Review Architect in the Design Excellence program for the GSA, and instructor in Harvard University’s Graduate School of Design. 

Sarah Gray, P.Eng. RDH

Sarah Gray is a Principal and Senior Building Science Specialist at RDH, where her primary focus is on the evaluation and exterior rehabilitation of existing buildings and their assemblies, especially historic buildings requiring sensitive repair approaches. She has worked on the design and construction review of deep energy retrofit projects for older residential towers as well as commercial and institutional buildings. Her portfolio includes an array of iconic buildings, including the Royal Ontario Museum, the Confederation Life Building, and Commerce Court North, in Toronto, where she has worked for close to 20 years. Sarah earned a B.S. in civil engineering from the University of Cincinnati and M.S. in historic preservation from the University of Pennsylvania. She currently serves on the Board of Directors for the Association of Preservation Technology, is co-chair of APT’s Preservation Engineering Technical Committee and teaches building science courses at the University of Toronto.

David Artigas, P.E., Simpson Gumpertz & Heger

David Artigas is a licensed Mechanical Engineer whose work with Simpson Gumpertz & Heger focuses on existing building enclosure preservation and rehabilitation projects. A graduate of the University of Pennsylvania’s graduate program in Historic Preservation, David specializes in the rehabilitation of fenestration, roofing, and waterproofing and in the conservation and repair of the building enclosure materials, as well as the hygrothermal performance of the building enclosure systems. Mr. Artigas has participated in recent APT presentations focused on insulation assessment, including the APT Technical Committee on Sustainable Preservation 2023 insulation roundtable; the APT Quebec Conference (2014), Energy Performance of Mid-Century Glass and Steel Curtain Wall Buildings; and the APT Northeast Chapter Symposium on Preserving Buildings of the Modern Era (2017), Issues with Rehabilitation of Mid-Century Cavity Wall Construction.

Matthew Bronski, P.E., Simpson Gumpertz & Heger

Sarah Sinusas, PE, Wiss, Janney, Elstner Associates, Inc.

Sarah Sinusas is an Associate Principal at Wiss, Janney, Elstner Associates Inc. (WJE) in the firm’s New Haven, Connecticut office. She is a Professional Engineer and has specialized in building envelope systems since beginning her career in 2008. She has participated in and led numerous projects, including facade and curtain wall evaluations, building enclosure peer reviews, water leakage investigations, and repairs to existing enclosure assemblies. She specializes in the evaluation and investigation of curtain wall and window assemblies. Ms. Sinusas was awarded the Glazing Association of North America (GANA) Energy Division Member of the Year in 017. She has authored articles for an ASTM symposium journal and an International Institute of Building Enclosure Consultants (IIBEC) publication and has presented on building envelope topics at several industry conferences.

Anthony Cinnamon, RA, Wiss, Janney, Elstner Associates, Inc.

Mr. Cinnamon is an Associate Principal with the firm of Wiss, Janney Elstner (WJE) in the Chicago,
Illinois, USA office. His expertise lies in the design and analysis of exterior enclosures with an emphasis
on glass, curtain walls, and fenestration systems. He is a licensed Architect in the states of Illinois, Iowa,
and Massachusetts. Mr. Cinnamon has written numerous articles on the inspection, repair/restoration, and replacement of window and facade systems. He has also presented seminars domestically and
internationally on fenestration related topics including typical window problems, testing and repair of
window and curtain wall systems, and typical glass failures. Mr. Cinnamon also serves as the Chair of the Board of Directors at the National Fenestration Rating Council (NFRC).

Walter Sedovic, FAIA, LEED

Walter Sedovic is principal of WSA and founder and CEO of High Performance Landmarks LLC, architectural and design-build firms focused on integrating sustainability and historic preservation. His projects include the restoration and2 rehabilitation of icons such as the Metropolitan Museum of Modern Art and J.P. Morgan complex, Columbia University, the Metropolitan Club and Eldridge Street Synagogue in New York City, along with historic buildings in National Parks in Boston and throughout the MidAtlantic. A founding member of APT’s Technical Committee on Sustainable Preservation, he served as guest editor for APT’s Special Bulletin issue on Sustainable Preservation (2010). He also serves on the BOMA Codes and Regulations Committee and Historic Preservation Advisory Committee for Westchester County, New York. 

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