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Sawtooth Building - ClickRain and Lemonly HQ
GridSpan™ skylights bring daylight into a former spark plug factory.
Built in 1919, and for many years used as the Symms-Brownell Spark Plug Factory spark plug factory, the present-day Click Rain and Lemonly headquarters stands as a historic landmark in downtown Sioux Falls, South Dakota. However, it wasn't always a city beacon. Upon acquisition, the building was in a state of neglect and under-utilization, filled with broken furniture and old mattresses. Yet, amidst the disarray, a hidden gem lay awaiting discovery.
Concealed beneath a lay-in ceiling, the building's hallmark sawtooth structure remained hidden from view. This architectural feature, characterized by its series of upward-facing roof sections resembling the teeth of a saw blade, held the potential to transform the space into something truly remarkable.
The Click Rain and Lemonly team needed to create a modern workspace adaptable to varied work styles—on-site, hybrid and fully remote. The goal was to transform the building into a hub of innovation, fostering collaboration and genuine connection.
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Exposing the original sawtooth ceiling and adding in new skylights allowed for this design focal point to shine while also honoring the building’s industrial history.
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Upon uncovering the original ceiling and skylights, it was clear that some work needed to be done, including cleaning up the exposed structure and fitting new skylights to allow natural light into the space. The architects at CO-OP Architecture turned to Heartland Glass to install Kingspan Light + Air’s GridSpan™ (formerly Guardian 275®) translucent panel skylights, which feature a lightweight sandwich panel design with fiberglass reinforced polymer (FRP) face sheets that provide light and solar heat gain control.
The skylights would ensure abundant natural light throughout the large building, overcoming the challenge posed by perimeter offices and meeting rooms that would otherwise block light from reaching the building's interior open office space. Additionally, translucent panel skylights help minimize glare, ensuring a comfortable and visually pleasing environment for occupants.
To maintain the original factory feel of the original structure, metal support beams were painted black, and the original concrete floor was exposed. The original wood that made up the sawtooth ceiling was also soda-blasted and restored, with electric lighting kept minimal and linear so that it wouldn’t distract from the building’s unique structure.
The new office space maintains the openness of a factory floor, with the heart of the space being a workstation bullpen. Multiple breakout zones, meeting rooms, quiet coves and private offices surround the core, along with a café that connects to an outdoor patio. To add privacy to closed-off spaces, glass walls were chosen to allow light from the GridSpan™ skylights to transmit throughout the space.
The Final Result
Turning the old spark plug factory into a bright and modern office space stands as a testament to the power of restoration and innovation. Once neglected and underutilized, it's now perfectly reflects the company’s culture and creative mindset.
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Project Award:
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Additional Resources and Links:
https://co-oparch.com/architecture-project/clickrain-lemonly/
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If you have questions about our products, need technical or design assistance or simply want to find out if your project's daylighting design is feasible and budget-friendly, contact us via the link below.
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