Why is SHGC important in Replacement Windows and Doors?
Solar heat gain coefficient (SHGC) is the fraction of solar radiation admitted through a window, door, or skylight -- either transmitted directly and/or absorbed and subsequently released as heat inside a home. The lower the SHGC, the less solar heat it transmits and the greater it's shading ability to keep your home cool when it matters. It also protects your interior from discoloration.
