Windows of the past: Reviving history

By Shana Shipperbottom, Gary Fahrer, and Craig Jones

The Canalman’s Shelter is a vital building at the Sault Ste. Marie Canal National Historic Site, standing as a silent witness to over a century of canal operations. Discover how the craftsmanship of Parks Canada’s Asset team helped preserve the structure’s heritage for generations to come with a window restoration project.

The Canalman’s Shelter was built later than the rest of the sandstone buildings, in 1906, serving as a refuge for the motormen and linemen who operated the lock. Today, the shelter continues to play a pivotal role. It is used by city staff responsible for the lock’s day-to-day operation. Moreover, it houses the hydraulic motors for the upper gates, the main computer for the consoles, and radios and cameras that ensure the safe navigation of boats through the lock.

The shelter’s windows are an important part of its character and were due for replacement following years of wear. The windows were last replaced in 1980 by Billy Lynch, who signed his name and the date on one of the old frames. The asset team set out to preserve the windows’ historical integrity while ensuring durability for the future. For historical accuracy, the restoration adhered to the original white pine material. Although the team had previously reconstructed windows for other buildings on site, a meticulous process was required because not all the windows are the same. The new windows for the Canalman’s Shelter were modeled after those in the Superintendent’s Residence, ensuring consistency with the site’s heritage. To address the unique challenges of replicating historical craftsmanship, the team created a detailed profile for all windows on site. This profile will guide future restorations of the canal’s historic buildings, streamlining repairs while preserving authenticity.

The restoration of the Canalman’s Shelter windows was a blend of craftsmanship and innovation. Each window frame was rebuilt, requiring careful planning to match the exact thickness of the original lumber—no small feat, as lumber sizing has changed over the decades. A custom cutterhead bit (wood shaper) was crafted to replicate the beveled edges and intricate profiles of the original windows. Once shaped, each frame was dipped into a preservation bath of mineral spirits and spar urethane to enhance longevity. The frames were then assembled using traditional mortise and tenon joints with a dowel to pin them together. Attention to detail also extended to the installation of glass, using 6mm single panes, the same as were originally used.

This restoration is more than just a physical improvement; it’s a testament to Parks Canada’s commitment to protecting and celebrating cultural heritage. By restoring the Canalman’s Shelter windows, we’re preserving a connection to the past while ensuring the site can serve future generations. This project allows visitors to connect with the unique history of the Sault Ste. Marie Canal, brought to life through expert craftsmanship and careful preservation.

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