Year-round Comfort with Passive Solar Benefits

Comfort is a key benefit of windows made with Sungate 500 glass, which 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. In fact, 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

• Improves the window U-value (provides a higher R-value) as compared to uncoated glass.
• Allows the inner pane to stay warmer in winter.
• Reduces room side condensation of the window.
• Reduces the transmission of ultraviolet light.
• Maintains a natural appearance, viewed from the outside or inside.
• Carries a 10-year warranty against coating failure.
• Is manufactured by PPG, a leader in flat glass manufacturing, with one of the world's largest glass R&D centers and extensive quality assurance and technical services groups.

Sungate 500 Low-E Glass Benefits

• Homeowners save on energy costs, for both heating and cooling.
• Comfort is enhanced by reducing drafts around windows and allowing higher room humidity without condensation.
• Builder callbacks and potential window deterioration due to excessive condensation are reduced.
• Fading of interior furnishings, such as carpets, drapes, and furniture, is reduced.
• The exterior of the home maintains a pleasing appearance, and interior colors remain true.
• Homeowners can be assured that the glass in their windows is backed by the strength and experience of a leader in the glass industry.

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.

 

	Standard Insulating Glass Unit with clear glass, conventional aluminum spacer, and air fill.	Sungate® 500 Insulating Glass Unit with Sungate® Low-E glass, Intercept® spacer, and argon gas fill.
Sungate® 500 glass keeps you warmer in the winter 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.)
	Winter Furnace Heat
	Window U-Value= 0.46	Window U-Value= 0.33
Sungate® 500 glass keeps you cooler in the summer 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.)
	Summer Solar Heat
	SHGC= 0.75	SHGC= 0.70
Sungate® 500 glass reduces U.V. Energy and allows visible light 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.*
	Transmittances
	Ultraviolet Energy= 58% Visible Light= 81%	Ultraviolet Energy= 48% Visible Light= 76%

Recommended Application

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.

 

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