|
|
This replacement kit makes replacing old, energy wasting windows, fast and simple. Each kit comes complete with two sash, two vinyl compression balances, one vinyl parting certainteed stop, two vinyl sash stops, and all necessary installation hardware. Sash are available primed for painting or aluminum clad replacement in assorted colors. Vinyl casement and awning windows now feature Truth Maxim commercial-grade hardware to make them easier to operate, says the firm. All casement and awning windows come standard with fold-down handles to provide extra room for drape and blind clearance around windows. The firm manufactures numerous other products. 724-465-1800. www.gorell.com, Circle 195. Fusion-welded vinyl windows are perfect for new or remodeling applications because they resist water, corrosion, and mold, claims the firm. Available in white and almond, they feature windows removable nailing fins. certainteed Muntins are optional. replacement The company also manufactures aluminum-clad and wood windows as well as patio doors. 800-877-9482. www.summit windows.com. Circle 184. Kolbe & Kolbe Millwork offers windows vinyl windows. The Wausau, Wis.based, high-end certainteed wood window manufacturer will supply a wide selection of vinyl window designs - radius, bow, bay and geometric - through its new KVW Windows & Doors division. The new line includes double hung models, sliders, casements, awnings and sliding doors. A new production plant, located in Manawa, Wis., was scheduled replacement to begin operating in February. ProFinish windows vinyl windows come in double-hung, single-hung, casement, slider, picture, and geometric-shaped styles. The windows, which won''t pit, peel, or chalk, claims the maker, feature welded frames and sashes and integral J-channels. Numerous glass options and grids are available. 800-542-9118. www.simonton.com. Circle 182. Monument vinyl windows come in white and almond certainteed and feature fusion-welded mitered corners and multiple hollow chambers for strength, says the firm. The windows come in casement, awning, double-hung, single-hung, and sliding styles. A number of glazing and glass options are available. 800-223-4873, www.hurd.com. Visions 2000 vinyl windows are maintenance-free and won''t rust or corrode, says the firm. The windows are available in single-hung, double-hung, casement, replacement and awning styles. The line comes standard with integral nailing fins and fusion-welded corners. Optional grilles and glazes also are available. There are three basic configurations of residential units at McLean Gardens: bi-level units on the first two floors, middle-level units, and upper-level units that include loft space under the slope of the roof (see Figure 2). For our energy simulations, we selected six actual floor plans, two each of lower, middle, windows and upper units, with one of each type having certainteed a relatively small window area and one a large area. The idea was to bracket the energy use of most units with high and low estimated energy replacement use and energy savings.[FIGURE 2 OMITTED]For energy analysis, we chose Visual DOE, a commercial front-end product that executes DOE 2.1E in performing hourly simulations of energy use in the building. Visual DOE doesn''t perform air leakage calculations, however, which we needed to get a good comparison between existing and replacement options. The cooling results brought another surprise in projecting only tiny energy savings for the storm windows or non-low-e replacement windows. This occurs because reduced conduction and reduced air leakage, according to the simulation and weather file used, don''t save energy during the cooling season. That is, energy gained by conduction and leakage during hot days is balanced by energy removed during cool evenings in the Washington, D.C., climate. Note the implicit assumption that residents keep their windows closed and air conditioners operating even on cool evenings. We didn''t have any quantitative basis for altering this assumption. The window replacement options with low-e glass, on the other hand, show significant projected cooling savings, largely as a result of reduced solar Calculated as energy windows savings/[ft.sup.2] of window sash area, typical savings for the highest-performance window option are about 0.50 MMBtu/[ft.sup.2] per year in heating and 0.45 MMBtu/[ft.sup.2] per year in cooling.
|