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Emerging Data from Inaugural National Summit on Window Preservation Testing & Standards Shows Promising Results
Historic Preservation Blog from PreservationDirectory.com - Restoration weatherization historic wood steel windows, National Window Preservation Standards Collaborative, National Historic Landmark, Pine Mountain Settlement School, John Leeke, Bob Yapp
Contributed By: Bob Yapp
Email The Author: yapperman@msn.com

The National Window Preservation Standards Collaborative (NWPSC) convened its 1st Window Preservation & Performance Summit at the National Historic Landmark, Pine Mountain Settlement School site in Pine Mountain, Kentucky the week of July 22-29, 2011. Attendees from the four corners of the United States and Canada gathered with the Collaborative Founding Members David Gibney, Duffy Hoffman, John Leeke, Jim Turner & Bob Yapp, and restoration architects Jill H Gotthelf & Walter Sedovic, who engineered the performance testing protocol.

Restoration and weatherization of historic wood and steel windows showcased a variety of techniques and approaches by each of the Founding Members, with ample time for field review and participation by advisors and participants. Performance testing began with a baseline evaluation and measurement of the pre-restoration condition of each window. Throughout the course of the week, additional testing of the restored windows was performed following defined scientific protocol. Initial results were collated and evaluated, allowing for refinement of restoration techniques, and further testing.

Preliminary findings focusing on air infiltration revealed very promising results for the energy efficiency of restored historic windows, and underscored the enormous benefit provided by simple installation of a storm window system; a variety of commonly available or readily constructed storm windows were included in the Summit sampling.

This Summit represents an historic milestone in proving what window preservation advocates have long espoused: that historic windows are exemplary energy performers and that restoring windows is an undeniably sustainable approach, which now can be supported by building science. Coupled with the proceedings of the Summit will be future data on other beneficial attributes of heritage windows including thermal performance, day lighting, longevity and restorability.

The complete report will be included in a new publication slated to be available in early 2012 titled, "Window Preservation and Weatherization Standards". This book will be the first of its kind to provide a menu of window repair, preservation, restoration and weatherization techniques that will create a standard for specifiers, architects, property owners as well as federal, state and local government agencies.

FOR FURTHER INFORMATION, CONTACT: Bob Yapp, Belvedere School for Hands-on Preservation, Hannibal, Missouri, 217-474-6052, email: yapperman@msn.com.


Keywords: Restoration weatherization historic wood steel windows, National Window Preservation Standards Collaborative, National Historic Landmark, Pine Mountain Settlement School, John Leeke, Bob Yapp

Posted: August 14, 2011
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Unless noted, the thoughts and opinions expressed in the article are solely that of the
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