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A replacement window is a window that is installed in an existing window opening as replacement of the existing window. Old weather beaten windows deteriorate and become loose and drafty. They need replacement not only to improve the appearance of the house but also to take advantage of modern energy efficient windows that bring about an overall improvement of the ambiance of the house at low recurring cost of heating and cooling.〔(Window Types | Department of Energy )〕 ==Installation== Replacement windows are designed for a variety of installation situations and techniques. In a full-frame installation, trim around the old window (interior and/or exterior) is removed and the old window frame is removed completely. The new replacement window is secured to the studs surrounding the window opening, and the trim is replaced. Insert installations are sometimes used when replacing older wood windows with frames that are in good condition. In this case, the new replacement window is installed within the existing frame. This installation technique is simpler than a full-frame installation, but decreases the size of the window opening due to the nesting of the frames. Another technique involves replacing the window sashes only, and re-using the existing frame. New-construction windows of recent vintage typically have a "nailing fin" along the outer frame. This fin provides a surface so that the window can be nailed in from the outside of the home before the application of flashing, siding or brick and stone veneers. Most replacement windows are manufactured without this fin so that they can be installed with minimal disruption to the existing trim, siding, sheetrock or exterior veneer. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Replacement window」の詳細全文を読む スポンサード リンク
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