Replacement windows
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[edit] Purpose of replacement windows
Replacement windows take the place of existing ones when they have become drafty or non-functional. Replacement windows increase the resale value of the house, and may greatly decrease energy loss and outside noise. The majority of newer replacement windows carry the "E-Star" rating for home efficiency, and may be custom ordered to meet the customers preferences, both functionally, and aesthetically. While most replacement windows are used in residential applications, there are numerous commercial applications as well, such as storefronts, offices, and workshops.
[edit] Replacement vs. new-construction windows
Replacement windows should be distinguished from new-construction windows. New-construction windows have a "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 siding. Unfortunately, new-construction windows may be of inferior quality as builders continually try to keep costs low. Replacement windows have no such "fin". This allows them to be installed with minimal disruption to the exsisting trim/siding. They are set into place in the existing window frame and nails or screws are driven into the window from the inside of the window jamb. Installation may be done from the inside by the removal of the inside trim, or from the outside by the removal of the outside "stops". Outside installation requires either replacing old stops with new ones, or a custom metal wrap, but can be useful if the inside trim is too precious to be disturbed. All windows should be sealed inside and out with a high quality silicone caulk.
[edit] Benefits of replacement windows
Replacement windows save energy because typically they are of a higher quality than the existing window. Insulated glazing is one feature that helps save energy. The distinguishing feature being double-pane, "low E" glass which cuts energy costs at around 30%, by greatly reducing temperature transference. Other options include triple-glazing, spacers to reduce condensation, and argon or krypton gas insulation.
Replacement windows provide many choices. Vinyl windows come in multiple colors, with multiple finishes such as woodgrain, glossy, and flat. Other materials may allow painting. "Single-hung" windows feature a single moveable bottom sash, whereas "double-hung" windows feature two sashes that operate both up, and down. Most models now feature some type of "tilt-in" sashes for ladder-free cleaning, as well. "Casement windows" operate on either a right swing or left swing, and are opened using an interior crank. For openings that are wider than they are tall, "sliders" come in two, three, and four "lite" (pane) versions and operate left to right. Picture windows are non-operating, comprised of a single double-pane I.G. unit (individual glass unit). Replacement picture windows can be manufactured to fit any shaped opening including, but not limited to, half-circles, circles, triangles, octagons, ovals, trapezoids, etc..
[edit] Materials
Replacement windows are available in wood, fiberglass, aluminum, composite, or vinyl. Vinyl is the most popular choice as it is less expensive than other materials and does not require painting. All replacement windows should have an insulating foam strip completely covering the perimeter of the casing. Most installations are completed with a custom metal wrap, which acts as an added barrier against the elements. PVC-coated aluminum comes in a myriad of colors and requires no painting. Solid vinyl outside trim is another option for a slightly more traditional look, however, it is costly and only comes in white. Screens can be full-sized, or half-sized and moveable. A variety of materials, from aluminum to durable vinyl/fiberglass "pet-screens" can be used in any sized window.
[edit] Deficits of Replacement Windows
Glass area is slightly reduced by the installation of replacement windows. Subsequently, there is a slight reduction in light transmitted through the replacement windows. However, factors such as energy savings, noise reduction, and ease of use usually outweigh the loss of a few inches of visibility.
[edit] External links
- National Fenestration Rating Council Non profit resource for fair, accurate and credible information on the energy performance of windows, doors and skylights.
- US Home Improvement Contractors
--Whpq 20:57, 26 March 2007 (UTC)
