Case Study

National Arts Centre

Guardian SunGuard SuperNeutral 70/41 on oversized glass used on the National Arts Centre.

Oversized glass brings arts center into the community

Originally completed in the late 1960s, the NAC is a landmark building with a range of performance and production spaces and has developed a storied history of excellence in the presentation of music, drama and dance from across Canada.

  • Ottawa, Ontario Location
  • Cultural - Retrofit Building Type


The building’s design turned its back on the city, and was only accessible by car. The architect vision shifted the entry so that the new design embraces the city and the pedestrian realm. The retrofit was designed to meet the needs of a new audience, one that is not the elite that was the audience in 1967.


The new wings are constructed of exposed wood structure and ceiling coffers of Douglas fir and framed on a custom-designed glass curtain wall system that pushes the limits of glass innovation. Thanks to Guardian SunGuard® SuperNeutral® 70/41 coating on oversized glass, the NAC can now support activity throughout the day in light-filled spaces designed to engage the public.

The Guardian SunGuard coated glass product line for commercial applications offers excellent solar control and a wide variety of colors and performance levels. SunGuard glass products create value through innovative, leading solutions for appearance, economics and energy efficiency, and are available through an international network of independent Guardian Select® fabricators.

Architects and designers utilize the industry-leading Guardian Glass Analytics™ for North America for comprehensive engineering and analytical modeling and custom glass content that demonstrate the advantages of high performance glass in building facades.

Product Overview

Diamond Schmitt Architects has designed new public spaces and a new entry which, for the first time, connects the building to the community. Guardian SunGuard® SuperNeutral® 70/41 on oversized, low-iron glass, the largest units at 95” x 228”, provides the transparency and beauty that invites patrons in.