Styles

The most important window style is the double hung window. These have an upper and lower sash that move vertically in separate channels. The sashes re separated by a small piece or wood called a painting strip. The upper and lower sashes have meeting rails, the top rail of the bottom sash and the bottom rail of the upper sash meet and are slanted and weather stripped to form a tight seal between the rails. A locking mechanism secures the sashes together at the two parking rails to create a tight seal and to minimize air infiltration and heal loss.

There are other common window styles and these include.

Sliding Windows- these are open horizontally and bypass each other in separate tracks mounted ton the header jamb and sill.
Casement Windows- these have hinges on one side of the sash and swing outwards when you activate a lever or crank. These windows provide unobstructed views as the casement sash swings outward.
Awning Windows- these windows are hinged at the top and swing outward via a crank or lever.
Hopper Windows- these types of windows are hinged at the bottom and swing inward.
Jalousie Windows-these windows are made of horizontal glass slats that are joined so that all the glass slats open or close together when the crank is turned.