Allegany State Park - New York
Red House Window Restoration
Analysis of a 90 year old steel casement window: Replacement or Restoration?
Depot Level Steel Window Restoration
Here we have a 90 year old industrial style casement steel window. It looks pretty rough prior to processing but looks are deceiving. We remove the sash from the frames and then the glass from the sash. The components are evaluated for repairs and in this case obvious repairs were needed on the lower mullion. The entire steel frame and sash are processed by a non-abrasive removal of paint and rust. All steel components receive necessary repairs and epoxy or zinc coating prior to painting and glazing.
The windows are stunning. The original crafting, precision in process and fitting is early twentieth century industrial art. After painting and glazing this window will be ready for another hundred years of service.
Notice how the steel muntins and bars are lapped into each other and tenoned into the frame!
In our analysis, we were surprised to learn that the strength and stability of the steel sash were based on the tenons and lap joints and not the expected to be welded joints. This is understandable from a historic evolutionary standpoint. Steel windows were a replacement of wood using new industrial methods and materials. The steel men copied the fabrication and assembly methods of traditional carpentry joinery.
Conclusion: These steel windows are unique, salvageable and historically important. Secondary strategies to improve thermal performance would be best performed with an easy detachable internal energy panel.
Good News: The Trustees, Staff, Architects and Parks Service have elected to restore and preserve the elegant steel windows of the iconic Red House of the New York Allegany State Park.
Red House Administration Building
Historic Preservation Project
2018 – 2019