High Performance Glass Charts

HIGH PERFORMANCE GLASS CHARTS

TERMINOLOGY

LIGHT TRANSMISSION: The percentage of visible light (380 to 780nm) transmitted through the glass.
The higher the percentage the greater the daylight.

SHGC (Solar heat gain coefficient):The proportion of directly transmitted and absorbed solar energy that enters a building. The lower the number the better the solar performance.

SC (Shading coefficient): The ratio of directly transmitted and absorbed solar energy that enters a building in comparison to 3mm Clear glass. The lower the number the better the glass performance.

U VALUE: The measurement of air to air thermal conductance or insulation between indoors and outdoors through the glass. The lower the number the better the insulation provided. Measurement unit is watts per m2 per degree celcius.

LOW E GLASS: Glasses which have a Low E (Emissivity) coating provide greater insulation by reflecting heat back inside a building and can also reflect absorbed heat back outside when used for solar control. Low E glasses can be a single glass, laminate or incorporated into an insulated glass unit.

SINGLE GLAZED LOW E: Where a Low Emissivity glass has been glazed with the coating on the inside of the building.

DISCLAIMER:
All performance data has been determined using LBNL 5.2 software, NFRC 100-2001 conditions have been used.
Nominal Thickness - the thickness tolerance for glass up to 6mm is ± 0.2mm.
Glass surfaces are indicated from the exterior to the interior of a building, hence a single glazed Low E product will have the coated surface to the interior of the building.
Chevron Insulated Glass Units are indicated from the exterior to the interior of a building with the first glass being the exterior glass surface.
Where a Low E product is incorporated into an insulated glass unit, the coated surface will be to the interior of the unit.
Low E glass may exhibit some haze under certain light conditions.
Chevron Glass Pty Ltd has taken all care but accepts no responsibility for information contained in these charts.

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