PPG makes both Sungate 500 and Sungate 100 Low-E glasses. Comfort is a key benefit of windows made with each of these products, although Sungate 500 glass delivers slightly better performance properties and is the preferred choice for most homeowners and window and door manufacturers.
In winter, Sungate 500 Low-E Glass transmits the sun's visible light and directs solar shortwave infrared energy into the home. At the same time, its reflect longs wave infrared (heat) energy -- like that which comes from a home's heating system -- back into the room, helping to keep homes warmer. Sungate 500 glass also keeps the room side glass surface of a window warmer than uncoated glass, helping to eliminate that drafty feeling near windows and sliding glass doors. It also reduces formation of condensation on the interior perimeter of the glass surface, which can damage the window sash.
Because Sungate 500 glass also reduces relative heat gain, windows made with this glass help keep homes cooler in summer, too. The result is year-round energy efficiency and comfort.
Sungate 500 glass has the look of traditional glass inside and out, so it is appropriate for any home design. The low-e coating is transparent and barely visible, permitting high amounts of sunlight in and allowing interior colors to remain true. The coating also reduces transmittance of ultraviolet light, which contributes to the fading of fabrics, rugs, draperies and furniture.
Low-Emissivity (Low-E) Glass Technology
For more than a century, PPG has been known as a leader in residential glass products. PPG's commitment to continuing research and development has launched the industry's leading low-e products, including Sungate 500 and Sungate 100 low-e glasses. All totaled, PPG holds more patents than any other manufacturer in the low-e glass marketplace.
Energy needs vary from climate to climate and manufacturing specifications vary for different types of windows. No single coated low-e glass can meet all diverse requirements. Accordingly, PPG has developed Sungate 500 Coated Low-E Glass and Solarban® 60 Solar Control Low-E Glass to provide specific solutions for climate needs and energy code requirements.
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Sungate Low-E Glass Features and Benefits
Sungate 500 Low-E Glass Features
Sungate 500 Low-E Glass Benefits
Sungate® 500 Low-E Glass
Sungate 500 Low-E Glass provides better thermal performance with very high light transmittance levels and is ideally suited for homes in which passive solar energy is desired. This glass provides the clarity and color neutrality of clear uncoated glass and the lowest haze of any pyrolytic low-e coating available. PPG produces Sungate 500 glass using a patented pyrolytic process for exceptional durability.
The overall U-Value (insulating value) of windows with Sungate® Low-E glass is about 28% better than standard clear insulating glass. (Lower U-values mean higher insulating performance.)
Sungate® Low-E glass transmits about 7% less solar energy than standard clear insulating glass.* Solar Heat Gain Coefficient (SHGC) is a measure of how much solar heat is transmitted through the glass. (Lower numbers mean less summer heat.)
Sungate® Low-E glass is about 17% more effective at reducing fabric-fading ultraviolet (U.V.) energy yet still allows about 94% as much visible light in as standard clear insulating glass.*
Sungate 500 Low-E glass is the solution for climates with cold winters and moderate summers, where passive solar heat is desired. It is an energy efficient window solution for insulating glass units or add-on storm windows.
Sungate ® 100 Low-E Glass
Produced by a PPG patented vacuum deposition process, Sungate 100 Low-E Glass provides excellent thermal performance in an insulating glass unit having traditional aesthetics. Sungate 100 glass was the world's first temperable, MSVD, low-emissivity glass on the market with a transparent coating that was not visibly reflective and transmitted high amounts of sunlight.
The overall U-Value (insulating value) of windows with Sungate® Low-E glass is about 44% better than standard clear insulating glass. (Lower U-values mean higher insulating performance.)
Sungate® Low-E glass transmits about 25% less solar energy than standard clear insulating glass.* Solar Heat Gain Coefficient (SHGC) is a measure of how much solar heat is transmitted through the glass. (Lower numbers mean less summer heat.)
Sungate® Low-E glass is about 40% more effective at reducing fabric-fading ultraviolet (U.V.) energy yet still allows about 96% as much visible light in as standard clear insulating glass.*
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