Replacement Windows One Zero One
Windows are available all styles, types, sizes and shapes, but unless you’re building a new house, all of the above are largely predetermined. There are in fact some exceptions. Perhaps a previous residenceowner replaced the original windows with units that are historically inappropriate or inferior. Or maybe you’re adding a family room on the back of the house, the place it can be okay to deviate from the double hung home windows in the front; in this situation, you may determine to use casements. Generally a houseowner will need to enhance or lower the size of the window being replaced, but if you happen to’re like most residenceowners, the real selections will have more to do with energy-saving options and ease of maintenance.
Replacement Window Glazing
With regard to energy saving, the primary thing to concentrate on is glazing. Efficient home windows typically have layers of glass and are called twin-pane or double-pane. The small gap between the glass layers creates a barrier to heat flow, which could also be enhanced with an additional layer of glass (two separate insulating chambers), in which case it’s called triple-glazed. The hole or gaps between layers of glazing are sometimes filled with a gas that further reduces heat flow by conduction. Argon and Krypton, or a mixture thereof, are commonly used gas fills.
Reflective Films, Tints, and Coatings
Reflective films, tints, and low-emittance (low-E) coatings are among the different ways window manufacturers are improving window performance.
REFLECTIVE FILMS
Reflective films block much of the radiant energy striking a window—keeping occupants cooler—but additionally they block a lot of the seen light. In addition to giving home windows a mirror-like look, they typically cause occupants to use more electric lighting to compensate for the lack of daylighting.
TINTED GLASS
Bronze- and grey-tinted glass reflect radiant energy and reduce cooling loads without reducing as much the visible light entering the home. A visual transmittance (VT) of 60% (versus 90% for clear glass) is common.
LOW-E COATINGS
Low-E coatings are more versatile than either reflective films or tints and are virtually invisible. Microscopic metal or metallic oxide particles suppress radiant heat flow out of the window and may be formulated to allow varying degrees of solar radiation in. In climates where heating is the dominant concern, low-E coatings could also be used to forestall radiant heat switch out of the house while allowing high solar heat gain. In climates where both heating and cooling are required, low-E coatings can reduce radiant heat loss while permitting moderate heat gain. In climates the place the dominant concern is cooling, low-E coatings are primarily used to reduce solar heat gain. It’s even possible to fine-tune solar heat acquire by selecting a low-E coating with a high solar heat achieve coefficient (SHGC) for south-facing home windows and a lower coefficient for different orientations.
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Replacement Window Glazing
With regard to energy saving, the primary thing to concentrate on is glazing. Efficient home windows typically have layers of glass and are called twin-pane or double-pane. The small gap between the glass layers creates a barrier to heat flow, which could also be enhanced with an additional layer of glass (two separate insulating chambers), in which case it’s called triple-glazed. The hole or gaps between layers of glazing are sometimes filled with a gas that further reduces heat flow by conduction. Argon and Krypton, or a mixture thereof, are commonly used gas fills.
Reflective Films, Tints, and Coatings
Reflective films, tints, and low-emittance (low-E) coatings are among the different ways window manufacturers are improving window performance.
REFLECTIVE FILMS
Reflective films block much of the radiant energy striking a window—keeping occupants cooler—but additionally they block a lot of the seen light. In addition to giving home windows a mirror-like look, they typically cause occupants to use more electric lighting to compensate for the lack of daylighting.
TINTED GLASS
Bronze- and grey-tinted glass reflect radiant energy and reduce cooling loads without reducing as much the visible light entering the home. A visual transmittance (VT) of 60% (versus 90% for clear glass) is common.
LOW-E COATINGS
Low-E coatings are more versatile than either reflective films or tints and are virtually invisible. Microscopic metal or metallic oxide particles suppress radiant heat flow out of the window and may be formulated to allow varying degrees of solar radiation in. In climates where heating is the dominant concern, low-E coatings could also be used to forestall radiant heat switch out of the house while allowing high solar heat gain. In climates where both heating and cooling are required, low-E coatings can reduce radiant heat loss while permitting moderate heat gain. In climates the place the dominant concern is cooling, low-E coatings are primarily used to reduce solar heat gain. It’s even possible to fine-tune solar heat acquire by selecting a low-E coating with a high solar heat achieve coefficient (SHGC) for south-facing home windows and a lower coefficient for different orientations.
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