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Subject: Colloquium on standards for cleaning masonry buildings

Colloquium on standards for cleaning masonry buildings

From: Donna Williams <wacincconserve<-a>
Date: Wednesday, June 25, 2014
"From Grime to Sublime: Standards for Cleaning Masonry Buildings"
2nd AIA Taliesin Colloquium
Taliesin West
October 10-12, 2014

Sponsored by the AIA Historic Resources Committee, the Frank Lloyd
Wright Foundation, and the Architectural Specialty Group of the
American Institute for Conservation of Historic and Artistic Works

The maintenance, repair, and rehabilitation of existing buildings
often includes cleaning the exterior surfaces of stone, brick, terra
cotta, and concrete.  There are philosophical, aesthetic, technical,
scientific, and economic factors that should be considered when
specifying materials and methods for cleaning.  What is the masonry
material, and what is the cause and composition of soil?  Is the
soiling damaging the masonry material?  What are the owner's
expectations?  What is an appropriate aesthetic target for the
character of the building?  Is the patina character-defining?  Will
a particular cleaning approach result in short term appeal and long
term damage?  Is the masonry best left alone?  What is an optimum
cycle for recleaning that balances the applicable factors?  In
summary, how do we characterize soiling, how should one clean a
building, and ought one to clean a building, and what is the meaning
of 'clean?'

Richard Wolbers, is the Friday keynote lecturer and Sunday workshop
leader.  Wolbers has been a tenured professor in the Art
Conservation department of the University of Delaware since 1989. In
addition to teaching, and fine art restoration, he has worked on
major architectural restoration projects that include the US
Capitol, the Treasury Buildings, and the National Building Museum in
Washington D.C.

Mary Oehrlein, FAIA, LEED AP, is the Historic Preservation Officer
for the Architect of the Capitol of the United States.  She oversees
17 million square feet of existing buildings within the Capitol
jurisdiction including the Capitol, Supreme Court, Botanical Gardens
and all House and Senate office buildings.  As founder and president
of Mary Oehrlein and Associates in 1984, Oehrlein oversaw the
exterior restoration of the damaged wing of the Pentagon, and the
stone conservation of the Washington Monument.

Judy Jacob is a Senior Conservator with the National Park Service,
Northeast Region, in the New York City Field Office, providing
support services for the preservation of buildings, structures, and
monuments for National Park Service sites.  She has worked on the
Washington Monument, Thomas Jefferson Memorial and Governors Island
National Monument.

Joshua Freedland is an Associate Principal at Wiss, Janney, Elstner
Associates, Inc. where he has worked for fourteen years.  At WJE,
Joshua has worked on the investigation, analysis, design and
construction administration of projects throughout the country
including cleaning and repair projects of traditional and modernist
buildings.  Facade cleaning projects have included Eisenhower
Executive Office Building in Washington, D.C., the Minnesota State
Capitol, Hall of Justice in Los Angeles, and the Nebraska State
Capitol, and the Yale Center for British Arts in New Haven,


    Peyton Hall
    FAIA, Chair, AIA Historic Resources Committee Advisor
    626-793-2400 ext 107
    peyton<-a t->historicla< . >com


     Donna Williams
     AIC ASG Chair Emeritus
     wacincconserve<-a t->sbcglobal< . >net

                  Conservation DistList Instance 28:4
                   Distributed: Tuesday, July 1, 2014
                        Message Id: cdl-28-4-009
Received on Wednesday, 25 June, 2014

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