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Low-E 4th surface technology from Pilkington


February 8, 2011
By Stefanie Croley

Feb. 8, 2011 – Pilkington's Low-E 4th Surface Technology allows a
double-glazed IGU to achieve 12% improved thermal performance over a triple-pane IGU.

Feb. 8, 2011 – Pilkington introduces Low-E 4th surface technology, which allow a
double-glazed IGU to achieve 12% 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.

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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%, compared to an IGU with two panes of standard clear.

Pilkington, the world leading brand in pyrolyic coatings, has revolutionized Low-E coating surface technology with the improved clarity, enhanced performance and pyrolytic benefits of
Pilkington Energy Advantage™ Low-E Glass. With improved clarity, enhanced insulation and a high passive solar heat gain coefficient, Pilkington Energy Advantage™ is one of the clearest choices for Low-E 4th Surface Techology.

Visit the Pilkington Sun Management and Thermal Stress Calculators for information on Low-E 4th Surface Technology. www.pilkington.com/na .

* 12% improvement in thermal performance is achieved when comparing the U-Factor of the following glazing combinations: 1/8” Pilkington Energy Advantage™ outer lite (#2 surface) with a _” air space,
1/8” Pilkington Energy Advantage™ inner lite (#4 surface);
compared to a triple pane window with three 1/8” lites of standard clear and two 1/2” air spaces.


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