Volume 36, Issue 5, May 2001
A Bright Future Lies Ahead
As the eyes of the nation turn to the West Coast and the ongoing energy crisis California endures, it is becoming apparent that this is a problem that could soon affect all of us. Thanks to the foresight of the industry, though, glass companies, along with window film manufacturers across the United States, have available a number of products that can help their customers fight the energy crisis in homes, stores and offices everywhere. Read on to see what the prophetic companies of the industry have to offer in this battle against increasing fuel prices, the blazing sun and, of course, one of the common, concerning topics on the mind of the consumer: the electric bill.
PPG Introduces Solarban 60; Maintains Array of Energy-Efficient Glasses and Coatings
Pittsburgh-based PPG Industries Inc. has introduced several new energy-efficient products to the market, including it’s brand-new Solarban 60 coated glass, Optigray 23 architectural glass, Azurlite aqua-blue glass and Solargreen® architectural glass.
The newest of these products, Solarban 60 solar-control low-E coated glass, was engineered for applications where controlling solar heat gain is essential, while also maintaining the appearance of uncoated glass, according to the company. PPG says Solarban 60 provides high visible light transmittance, a neutral exterior color aesthetic and insulating value. The low-E coated glass has already been used in a variety of locations, including the National Library and Archives of Canada in Ottawa, Ontario, and an Amtrak Auto Train in Lorton, Va.
According to PPG, its Optigray 23 architectural glass provides 21 percent visible light transmittance and ultraviolet transmittance of only 6 percent, along with glare reduction. In addition, it can be combined with PPG’s Sungate® low-E coatings for added energy efficiency, lower U-values and even lower visible light transmittance of approximately 18 or 19 percent. When used with Sungate 1000 low-E, PPG says the glass offers a total solar energy transmittance of only 9 percent.
Also on the company’s long list of energy-efficient options is its Azurlite® glass, which offers a visible light transmittance of 60 percent uncoated and a shading coefficient of .44. When used with Sungate 1000 low-E, Azurlite still has a visible light transmission of 53 percent and a shading coefficient on the third surface of .35.
PPG also has available Solargreen glass, “the emerald green member of PPG’s spectrally-selective architectural glass family.” Uncoated, the glass provides a shading coefficient of .46 and 60 percent visible light transmittance. Combined with Solarban 60 low-E in insulating glass units, the glass provides a shading coefficient of .35, visible light transmittance of 52 percent and a solar gain ratio of 1.73.
“Combining these two PPG high-performance products gives architects and builders the ability to maintain high visible light transmittance while achieving superior heat control,” reads the company’s latest brochure on its Solargreen glass.
AFG’s Comfort Ti Family Gives Birth to New Addition
AFG Industries of Kingsport, Tenn., has added a new product to its family of Comfort Ti glass. Comfort Ti-AC 41, the newest addition to the company’s array of energy-efficient products, has a solar heat gain coefficient of .41 and an aesthetically-pleasing appearance, according to the company, along with high visible light transmission. AFG says this high visible light transmission is due to its use of the company’s own titanium coating technology. The product’s high heat gain makes it beneficial to homes throughout the Sun Belt, according to the company.
Also available in AFG’s Comfort Ti family are its Comfort Ti-PS and Comfort Ti-R. Comfort Ti-PS is designed to offer high levels of passive solar transmission for homeowners in colder regions, and Comfort Ti-R is a balanced, high-R value product designed for flexibility of use in all regions, according to AFG.
“AFG introduced the Comfort Ti family of products in 1999 to help residential architects, builders and homeowners combine maximum energy efficiency with color neutrality and high visible light transmission,” said D. Roger Kennedy, president and chief executive officer. “Our newest product, Comfort Ti-AC 41, offers yet another aesthetic option to the marketplace—while maintaining the excellent energy-efficiency ratings that all our Comfort Ti products have become known for.”
Kennedy continued, “When our research revealed that some Sun Belt builders and consumers are looking for energy-efficient products that offer high visible light transmission levels, we began to apply leading-edge coating technologies to develop a high-performance product option that meets these needs.”
Madico Introduces SunScape Line
Madico Inc. of Woburn, Mass., has available its SunScape Select™ window films, which the company says provides natural light to be transmitted through a window, while not harming the interior of a building with its rays. “Think of it as sunscreen for your furniture,” reads the brochure from Madico, which targets consumers looking for film for their homes’ windows. In addition, the company says the SunScape films tame a glare and reduce the solar heat that can send energy costs soaring.
MSC Specialty Films’ Spectrally-Selective Lines Reduce Solar Heat Gain
MSC Specialty Films Inc. of Clearwater, Fla., has added several new energy-efficient films to its Panorama® product line, including the spectrally-selective Sterling™ 70 and 20 and dual-reflective Slate Grey 50 and 10 window films. According to the company, the spectrally-selective Sterling window films reject solar energy, while still maintaining high visible light transmission. Likewise, dual-reflective Slate Grey window films provide solar energy reflectance, but allow low interior reflectivity at night, according to MSC Specialty Films.
“The Sterling 70 is a nice complement to the Panorama series of films. Customers who want performance without the look of tinted glass have been thrilled with the product,” said Panorama dealer David Pendleton of Crystal Clear Window Filming.
Saint-Gobain Performance Plastics Releases Thermalbond®
Saint-Gobain Performance Plastics of Granville, N.Y., has introduced a new high-performance, specially-formulated polyurethane foam, which it says adds energy efficiency in curtainwall applications. The new foam, Thermalbond, has an open-cell structure that the company says allows air and moisture to reach the final silicone layer permitting optimum curing. In addition, Saint-Gobain says the foam is firm enough to maintain proper spacing, but flexible enough to accommodate slight surface irregularities and stress from expansion and contraction. It also has low thermal conductivity, reducing heat transfer and acts as a condensation inhibitor on windows, thus enhancing energy efficiency, according to the company. Although the product usually is used in curtwainwall applications, Saint-Gobain adds that Thermalbond is also useful in the installation of storm windows and doors.
Pilkington Says Solar E™ Glass Keeps Sun In and Heat Out
Pilkington of Toledo, Ohio, offers its Solar E Solar Control low-E Glass, which is designed to increase energy efficiency in homes, offices and other facilities through the use of hard coat low-E glass. According to the company, the glass reduces the transmittance of ultraviolet rays with minimal reduction in the amount of natural light entering the environment. Thus, it improves comfort, reduces direct heat, cuts energy costs and retains interior temperatures, whether warm or cool, Pilkington says.
In addition, the company says its Solar E glass has a short lead time, and can be cut, tempered and fabricated into insulating glass units as required. It also meets special building codes for hurricanes in Florida by fulfilling the laminated impact glazing requirement, while continuing the use of insulating glass, Pilkington says.
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