Alternative Materials: The Good, The Bad, and The Ugly


Which alternative materials are reasonable to allow? Where can one find authentic materials for rehabilitation? And what are the realities for preservation commissions and staff when working with applicants using alternative materials? This session will answer these questions and more with case studies featuring financial information and field testing for sustainability. Conformance to the Secretary of the Interior's Standards for Rehabilitation and tips for a smooth Certificate of Appropriateness application process will also be discussed.

CE Credits:
Jul 15, 2022 10:15 AM

Sharon Ferraro

Sharon Ferraro has been in love with old houses since her best friend's family bought an 1878 Eastlake and when she visited the Sand Hills Light Station in the Keweenaw Peninsula of Michigan. After working as a consultant for a few years, she accepted her dream job as the historic preservation coordinator in her hometown of Kalamazoo MI. In 2003, she co-founded the Old House Network devoted to teaching homeowners how to repair their old houses and when to hire the professionals. She has worked as a commission trainer for the Michigan Historic Preservation Network and for NAPC. In January 2022 she retired from the city and now has time to restart the Old House Network and continue training commissions. And travel!

Bob Yapp

Bob, his wife Pat and their dogs George & Gracie live in Hannibal, Missouri. Their 1859 home is a brick Italianate mansion located it the Central Park, National Historic District. The home is headquarters for Bob’s school, The Belvedere School for Hands-On Preservation as well as the Belvedere Inn Bed & Breakfast.In 1996 Bob started production of the national, weekly PBS program, About Your House with Bob Yapp. Bob was executive producer, writer and host for this National Trust for Historic Preservation sponsored, 52 show series. Bob is the president of Preservation Resources, Inc. (PRI). PRI is a multi-tiered historic preservation consulting firm specializing in: social policy; neighborhood revitalization; historic preservation commission training; hands-on field training for contractors and historic building owners; Main Street training; creation of how-to preservation materials for print and web based training; creation of historic preservation design guidelines and ordinances; development of specifications for historic preservation rehabilitation projects. Bob is also a regular member of the Design Panel for the National Endowment for the Arts in Washington D.C. as well as a founding member of The National Window Preservation Standards Collaborative. He recently restored all the Cupola, Oxeye & Greenhouse windows at George Washington’s Mount Vernon Home. Bob’s first book, About Your House, was published by Bay Books in December 1997 and he is a co-author & co-editor of The National Window Preservation Standards published in 2013.


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