Assessment and Repair of Historic Plaster Systems (Part 2)


Formed and molded into an unlimited variety of shapes and decorative finishing techniques, plaster can be a key aspect of interior design. However, plaster is also vulnerable to loss, and historic finishes can be damaged by water infiltration or inappropriate modifications to building structures or mechanical systems. This two-part article presents case studies that examine two different plaster remediation projects that presented technical challenges where performance assessments, mock-ups, laboratory testing, and structural modeling proved valuable to verify the adequacy of the proposed repairs. The project in Part 2 includes corrective measures to restore an ornamental interior plaster ceiling within the Michael J. Howlett Building in Springfield, Illinois.

This article was originally published in the Fall 2016 issue of Licensed Architect magazine, the official publication of the Association of Licensed Architects.