What is Double Hung?
Definition of Double Hung in Construction Double hung windows are windows that have two separate window sashes. Each window sash is operational and will slide vertically, up or down. The double hung window can be provided with equal window sashes or with unequal sashes, reference the cottage window. Double hung windows are extremely common in residential structures or multi- family buildings. The use of double hung windows in commercial structures is typically uncommon, however is used in multi- family residential projects. The double hung window is the oldest operational window still being specified and used. Manufacturers are constantly researching and developing new and improved techniques for better windows and different accessories. The customary means of washing a double hung window, used to be access by ladder to the exterior surfaces. However, as the market has advanced and competition has caused an increase in technology, each manufacturer has developed various methods of cleaning their double hung windows. some of the manufacturers have developed removable sashes that will allow the removal for cleaning purposes of the individual sashes. Other manufacturers have produced windows that have pivots on them to allow the individual sashes to pivot down and allow the cleaning of the exterior surfaces in this manner. The consumer has a tremendous variety of windows that can be selected and varying accessories for each type. Double hung windows are constructed of wood, aluminum, vinyl or clad with other synthetic materials. Grills are available to visually simulate divided lites, or the glass can be specified to be actual divided lites. Different glass can also be specified, to increase the insulation qualities of the windows and decrease the solar gain and affects of the radiation produced by the sun’s rays. Double hung windows are the most popular residential windows on the market and can also be combined with other types of windows such as casements and sliders to provide a window package that best suits the individual homeowner.