Window Basics: Learn the Types and Styles

Windows are available in a variety of designs and sizes. There are differences in opening mechanisms and structure, as well as glass. Learn about replacing and renovating windows, as well as installing catches, shutters and glazing.

Excerpted from Do It Yourself Home Improvement

Butt Hinge

There are several different mechanisms used to open windows. How a window opens can have implications on how the space in a room is used — clearance may be needed to enable the window to be opened. Some types, known as "tilt-and-turn windows," have combination hinges and can open vertically or horizontally, depending on how the handle is operated. The opening mechanism of an existing window cannot normally be changed.

A butt hinge is the simplest opening mechanism. Hinges are attached down one side, or along the top edge on a "top-hung" casement.