Tomorrow’s Options for More Efficient Windows

Part 3 of Advances in Glazing Materials for Windows. “Superwindows” now coming on the market can attain high thermal resistance by combining multiple low-e coatings; low-conductance gas fills; barriers between panes, which reduce convective circulation of the gas fill; and insulating frames and edge spacers. Also, optical properties such as solar transmittance can be customized […]

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Options that Increase Window Efficiency

Part 2 of Advances in Glazing Materials for Windows. Manufacturers usually represent the energy efficiency of windows in terms of their U-values (conductance of heat) or their R-values (resistance to heat flow). If a window’s R-value is high, it will lose less heat than one with a lower R-value. Conversely, if a window’s U-value is […]

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Advances in Glazing Materials for Windows

Part 1 of Advances in Glazing Materials for Windows. Until recently, clear glass was the primary glazing material used in windows. Although glass is durable and allows a high percentage of sunlight to enter buildings, it has very little resistance to heat flow. During the past two decades, though, glazing technology has changed greatly. Research […]

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