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TOLL FREE 888.621.1811 |
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Features
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Fully Weatherstripped |
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Energy Saving Glass - LowE2 and Low E240 option |
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Double Strength Glass |
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Noise Reduction |
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Glass Breakage Warranty |
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Screen Warranty |
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Transferable Warranty |
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Tilt in Windows on Double Hung & Single Hung Windows for Ease of Cleaning |
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Gas filled, for Increased Energy Efficiency |
LOW E2
Window glass was revolutionized in the 1970's. Insulated glass (two or more pieces of glass with a dead air space between) makes its debut in the early 70's. Low-E glass was introduced in 1979. The E stands for emissivity. Low E glass works by reflecting heat back to its source. It does this by utilizing an ultra thin metallic coating on the glass. Among other things, sunlight contains visible light, UV light, and infrared (IR) light. Ultraviolet light damages your skin, wood, fabrics and causes colors to fade. Infrared light is basically heat. Low E glass has the ability to allow visible light to pass while blocking certain amounts of UV light and IR light.
The infrared light in sunlight is powerful. When it strikes an object it heats it up. These objects can be your tile floors, furniture, sidewalks, patio furniture, etc. As these objects cool off they emit a low powered form of IR light. Low E glass reflects this form of energy. In the summer this helps to keep your house cooler, as the heat from objects outside is kept outside. In the winter, all objects in your home are heated (by either the sun or your furnace). This heat is also bounced back into our house by the low E glass. Low E glass is worth the price, especially since houses tend to lose 25% of their heat through windows.
U-FACTOR
The rate of heat loss is indicated in terms of the U-factor. The lower the U-value, the greater a window's resistance to heat flow and the better its insulating value. A low U-factor is useful during cold days when heating is needed. A low U-factor is also helpful during hot days when it is important to keep the heat out, but it is less important than SHGC in warm climates.
SOLAR HEAT GAIN COEFFICIENT (SHGC)
The lower a window's solar heat gain coefficient, the less solar heat it transmits. If you have significant air conditioning costs or summer overheating problems, look for SHGC values of 0.40 or less. A low SHGC is the most important window property in warm climates.
LOW E 240
Low E2 240 glass blocks visible light for glare control, reflects invisible solar heat and, because it has a low-emittance coating, the glass stays comfortable all year long - cool in the summer, warm in the winter.
Low E2 240 glass is more than a solar control glass. Its advanced coating design also provides the lowest possible U-factor to deliver energy savings and comfort during cold winter weather. Year-round thermal comfort is a result of warm glass temperatures in the winter, cool glass temperatures in the summer, and the blockage of oppressive solar heat gains.
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