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Viracon's solar and optical performance data is center of glass data based on the National Fenestration Rating Council measurement standards, calculated using Lawrence Berkeley National Laboratory's (LBNL) WINDOW 7 software.
Winter and Summer U-Values are the only performance values available for spandrel glazing. The U-Values for spandrel glazing are the same as the corresponding vision unit. The spandrel color does not impact U-Value.
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The performance data above applies to the specific glass configuration selected.
The insulating glass units are constructed with two plies (clear inboard) of 1/4" (6mm) glass and a 1/2" (13mm) airspace or argon space. The coating (if applicable) is applied to the second (#2) surface. If incorporating a silk-screen pattern, the pattern is applied on the second (#2) surface as well (the color and amount of coverage is shown above if applicable).
The laminated glass units are constructed with two plies of 1/4" (6mm) glass and an .060" (1.52mm) clear PVB interlayer. The coating (if applicable) is applied to the second (#2) surface. If incorporating a silk-screen pattern, the pattern is applied on the second (#2) surface as well (the color and amount of coverage is shown above if applicable).
The triple insulating glass units are constructed with three plies (clear lites unless otherwise specified) of 1/4" (6mm) glass and two 1/2" (13.2mm) airspaces or argon spaces. The coating is applied to the second (#2) surface. If applicable, a VE-85 coating is applied to the fourth (#4) surface.
The insulating laminated glass units are constructed with three plies (clear inboard laminate) of 1/4" (6mm) glass, a .060 (1.52mm) clear polyvinyl butyral (PVB) interlayer and a 1/2" (13mm) airspace. The coating (if applicable) is applied to the second (#2) surface. If incorporating a silk-screen pattern, the pattern is applied on the second (#2) surface as well (the color and amount of coverage is shown above if applicable).
The monlithic glass is 1/4" (6mm) glass. The Reflective coating (if applicable) is applied to the second (#2) surface. If incorporating a silk-screen pattern, the pattern is applied on the second (#2) surface as well (the color and amount of coverage is shown above if applicable).
