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The full-day Replacement Materials Symposium for historic preservation commissioners, city and county staff, historic property owners, and preservationists will tackle the frequently controversial issue of substitute materials in historic places. Attendees will participate in interactive sessions led by leading practitioners in the field to consider:

  • Why do preservationists have a tradition of retaining historic materials and how do replacement materials fit in?
  • What are the current trends in historic preservation commissions accepting or denying substitute materials?
  • How do commissions and staff best incorporate alternate materials into their design review process and guidelines?
  • What do these replacement materials look and feel like up close?
A highlight of the day will be a Vendor Hall of leading manufacturers of some of the most popular types of alternate materials such as cementitious siding, door and garage door materials, recycled plastic for porch floors, fiberglass and vinyl porch columns, synthetic slate, and aluminum clad and composite/fiberglass windows. Attendees will be able to speak to the vendors while touching and seeing the materials in person.

The symposium is eligible for CLG Educational and Training Funds reimbursement. Discounted admission for MAHDC dues-paying commissions and their staff. Morning coffee/tea and lunch will be provided.


Renewal by Andersen
Royal Building Products
TW Perry
Ply Gem
(more will be announced soon!)


Royal Building ProductsMaryland Historical Trust

Preservation Maryland