Upcoming Webinars


Use of Substitute Materials on Historic Building Exteriors

Technical Preservation Services has added an additional date for the webinar on Preservation Brief 16: The Use of Substitute Materials on Historic Building Exteriors. The webinar will be held on April 25, 2024, and will be a repeat of the webinar offered in February on this topic.

TPS public presentation
Thursday, April 25, 2024 | 2-3:30pm ET

Register: https://doitalent.zoomgov.com/webinar/register/WN_51kM1mRUR8q22tFdRahqEA#/registration

Space for this webinar is limited to the first 1000 registrants

The webinar will be live captioned. If you need additional accommodation, please contact our office at NPS_TPS@nps.gov in advance of the webinar.

This webinar will cover the recent guidance updates published in October 2023, including considerations for the appropriate use of substitute materials with case study examples. The October 2023 guidance provides additional direction as well as technical preservation information on when a different material than the historic one may be appropriately used to replace a deteriorated or missing historic feature, consistent with the Secretary of the Interior’s Standards for Rehabilitation.

The guidance on the use of substitute materials was updated to be more consistent with other NPS guidance and to ensure that it continues to reflect current and best practices. Revised guidance takes into account such factors as availability, performance, location/visibility, code requirements, and sustainability/resilience of the proposed new and historic materials or features. The guidance continues to recognize that flexibility may sometimes be needed when it comes to new and replacement materials as part of a historic rehabilitation project.

Last updated: April 11, 2024