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ExposureEach side of a building is exposed to a different set of environmental conditions. The east and west facing facades are typically exposed to intense early morning and late afternoon low-angle sunlight respectively. In the northern hemisphere south facing façades receive varying degrees of solar exposure all year round. North facing façades typically receive little or no direct solar exposure.
Specifying different glass types for each façade according to its exposure conditions often leads to a visible mis-match betweenthe various glass types used. Heat Mirror® Insulating glass is capable of achieving different performance levels in different areas while maintaining a very consistent visual appearance around the building. This enables designers to "tune" a building's façade by optimising the glass performance according to its environmental exposure, without noticeable mis-matching of the glass.
North and East elevations normally treated identically to maximize natural light transmission while enhancing insulating performance. South and West glass reduced to a shading coefficient most often below 35, while preserving a high level of daylight transmission. Skylight insulated glass specifications usually emphasize high light transmission, very low solar heat gain, and maximum insulation. |
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