To achieve that goal, Petroff Partnership Architects (PPA) specified Walker Textures® acid-etched Opaque on Starphire Ultra-Clear® low-iron glass by Vitro Architectural Glass. The result is a stunning visual of glass and illumination at the bustling intersection of Yonge and Dundas streets in Toronto, also commonly known as “Times Square North.”
To meet the criteria outlined by H&M during design meetings, PPA designed the façade to be fully illuminated with maximum exposure through the use of Starphire® glass. By using Starphire glass for the vision panels at street level, the architect ensured that there would be no color shift, a common concern with the green hue inherent in clear glass.
Acid-etching on all four surfaces of the insulating glass units provides the highest level of translucency without affecting the amount of light transmission from the light panels within the curtain wall system.
Using etched glass in this manner was unprecedented for the architect. After testing several variations of products using clear and etched surfaces, PPA concluded that the four-surface design with acid-etched Opaque best achieved the desired look.
The architect’s use of Opaque glazing units in previous projects had been limited to the more traditional function of presenting a glazed surface with no visibility to the interior space, but the H&M project was PPA’s first design in which a curtain wall system was fully illuminated as part of the building envelope system.
Starphire and Starphire Ultra-Clear are registered trademarks owned by Vitro.
Walker Textures is a registered trademark of Walker Glass Limited.