Stone Repair & Restoration

Tuesday, June 24, 2025 | 12-1 p.m. Eastern Time
1 LU/HSW

Stone has been used for thousands of years for many building types and comes in many shapes, sizes, and properties. Extremely durable when maintained, over time, stone can deteriorate when exposed to weather, moisture, or improper previous repairs or pointing mortar. Learn about the formation of stone, material properties of common building stone, and common deterioration mechanisms. Review stone treatment options, including best practices, for dutchman repairs, cementitious mortar repairs, stone finishing, and stone carving. Craftworkers that are trained and educated in stone repair and restoration are assets to project teams and play a significant role in successful projects.

 Learning Objectives:

  • Learn the background and basics of various stone material properties.
  • Understand common deterioration mechanisms of existing stone facades.
  • Understand important details with dutchman repairs and composite mortar repairs.
  • Understand best practices and the importance of matching historic stone material properties.

About the Speaker

Roy Ingraffia
National Director of Industry Development, IMI

Roy J. Ingraffia

Roy directs IMI’s marketing, industry development, research, and technical services programs nationwide. In his leadership role, Roy manages all aspects of day-to-day operations and long-term partnerships and initiatives. As an architectural conservator with technical experience in design and contracting capacities, his professional work has primarily focused on the preservation of historic masonry structures through research of traditional materials/methods and development of contemporary restoration techniques.

He is an Associate of the American Institute of Architects (AIA) and a Professional Associate of the American Institute for Conservation of Historic and Artistic Works (AIC), and Recognized Professional of the Association for Preservation Technology International (APT). In addition to his work with IMI, Roy teaches the Masonry Conservation Seminar within the Graduate Program in Historic Preservation at the University of Pennsylvania.

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