Solarban® 70XL (2) glass is a revolutionary new Solar Control, Low-E glass that combines the clear appearance of transparent, colour-neutral glass with an unprecedented combination of solar control and visible light transmittance. With the introduction of Solarban 70XL glass, PPG has expanded the universe of design possibilities in two important ways. First, this new product allows architects to incorporate vast areas of transparent vision glass into a building’s design without a requisite expansion of its cooling capabilities. Second, architects can now specify a clear aesthetic look while achieving solar control performance that was previously attainable only through the use of tinted glass and a Solar Control Low-E coating in an insulating glass unit. When coupled with conventional clear glass in a one-inch insulating glass unit, Solarban 70XL glass on the second surface delivers a Solar Heat Gain Coefficient (SHGC) of 0.27 with Visible Light Transmittance (VLT) of 63%. The result is a Light to Solar Gain (LSG) ratio of 2.33, which surpasses the performance of any other Solar Control Low-E glass on the market.
While architects will appreciate Solarban 70XL glass for its aesthetic qualities, the clients and building owners will value the energy-related cost savings it provides. According to a recent study by an independent energy and environmental research firm, Solarban 70XL glass has the potential to reduce annual energy costs by 3% to 5%, even when compared to existing top-of-the-line Solar Control Low-E glasses. However, the greatest benefit of specifying this glass may be realized before the building is even occupied. Thanks to the unequalled solar control characteristics of Solarban 70XL glass, architects can specify smaller cooling plants for buildings glazed with this product, potentially reducing up-front capital investment in cooling equipment by as much as 26%.