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Pennsylvania’s Capitol Building | First Floor – North & South Wings

First Floor – North & South Wings | Window Waterproofing & Restoration

Harrisburg, PA


Commonwealth of PA
Harrisburg, PA

Design Professional

Perfido Weiskopf/Graves/Noble



As part of an extensive, ongoing restoration project, L.R. Costanzo was required to carefully document each step of the restoration and waterproofing work done to each window.


  • Restoration of intricate designs
  • Matching of historic finishes
  • Documentation and tracking each individual window
  • Building occupied during construction


  • Worked closely with the Capitol Preservation Committee and a conservator to record the entire restoration process and assure historical integrity
  • Engaged a laboratory to analyze finish samples to obtain exact match
  • Before any restoration began, all windows were photographed, dissembled and catalogued for reassembly.


L.R. Costanzo experts:

  • Removed, disassembled, catalogued, restored and re-installed windows
  • Restored mechanical components to historical specifications
  • Restored and refinished woodwork
  • Treated each glass pane with safety film and waterproofed each window