Glass Performance

SOLAR HEAT GAIN COEFFICIENT (SHGC)
The SHGC is the fraction of incident solar radiation admitted through a window, both admitted through a window, both directly transmitted, and absorbed and subsequently released inward. SHGC is expressed as a number between 0 and 1. The lower a window's solar heat gain coefficient, the less solar heat it transmits.

If you have moderate air conditioning requirements, select windows with a SHGC of 0.55 or less. While windows with lower SHGC values reduce summer cooling and overheating, they also reduce free winter solar heat gain.

3/16" Clear Tempered SHGC: 0.92	1/2" Insulated Tempered LowE Squared SHGC: 0.41
1/4" Clear Laminate SHGC: 0.81	1/4" Energy ADV LowE Laminate SHGC: 0.76
1/4" Heat Mirror Laminate XIR Film SHGC: 0.38