Pilkington introduces Low-E 4th Surface Technology, which allow a double-glazed IGU to achieve 12 percent improved thermal performance over a triple-pane IGU. Adding a pyrolytic Low-E coating to the #4 surface reflects infrared heat back into the home, reducing the amount of radiant heat loss through the glass.



Pilkington introduces Low-E 4th Surface Technology, which allow a double-glazed IGU to achieve 12 percent improved thermal performance over a triple-pane IGU. Adding a pyrolytic Low-E coating to the #4 surface reflects infrared heat back into the home, reducing the amount of radiant heat loss through the glass. Infrared heat is room heat generated inside a building at or near room temperature. In cold weather conditions, a Low-E coating on the #2 surface inhibits room heat from transferring across the air space toward the outside. By adding a second Low-E coating to the #4 surface, the thermal insulation is further improved. The Low-E coating on the #4 surface reflects room heat back inside. This reduces the radient heat loss and improves the overall insulation of the IGU. Applying two pyrolytic Low-E lites in an IGU reduces the center-of-glass U-Factor by 45 percent, compared to an IGU with two panes of standard clear. For more information, visit  www.pilkington.com/na.