Double Hung Windows
The stylish and versatile double hung window
Double hung windows are the most common type of window used in American homes. Consisting of two panes of vertically stacked glass, the window opens by sliding the bottom pane up or the top pane down – each pane is mounted in separate grooves. The respective panes are counterbalanced by springs or, in older models, cast-iron weights. Usually, the bottom pane has two handles or finger grooves on the bottom sash to assist in opening the window.
These windows come in all shapes and sizes, from small bathroom windows to large living room windows. Several double hung windows can be placed side-by-side to create a window wall. Double hung windows also provide excellent airflow and ventilation, especially when both the top and bottom pane are opened.
Double hung replacement windows are inexpensive and easy to install. They come in a variety of colors and can be custom-fit for any area. They can be screened and are designed to accept many grille styles, which give the appearance of several smaller windows fused together. Some, like Andersen double hung bow windows (in which several windows are joined at an angle, creating a bow window shape), even tilt out of their frames for easier cleaning.
Double hung window frames are available in both vinyl and wood. Vinyl double hung windows will be the cheaper choice and are very low maintenance, as vinyl does not rot. Double hung wood windows, however, have a classic look and blend in better with a home's interior.
Double hung window sashes, or window dividers, come in various styles. The 1/1, with one solid pane atop another solid pane, is common in modern architecture, but you could also choose a 2/2, in which each solid pane looks like it's composed of two smaller panels. A 3/1 or 4/1 style has a solid pane on the bottom and either three or four dividers on the top pane, separating it into rectangular spaces. A 6/6 sash is common on larger windows and older buildings, because in the past, large, solid panes were more expensive, so larger windows were made up of several smaller panes.
Norco double hung windows, made by Jeld-Wen, can also come with a radius double-hung window, meaning the upper pane is curved at the top.