What is a Casement Window?
A casement window sash is hinged on the side and opens either to the left or the right. Some casement types are pushed open and pulled closed manually with a handle, but most are operated by a hand crank usually located on the lowest part of the window frame. Crank operated windows are a great option in kitchens and bathrooms where cabinets or a bathtub may prevent access to the upper portions of the window. This type of window typically has a modern aesthetic. A more traditional style can be achieved by adding divided lite bars, also known as window grids.
Because there is only one sash, casement windows can deliver large, uninterrupted expanses of glass. When closed, they prevent air infiltration better than any other type of operating window. When open, they are effective at capturing a breeze, and screens stay cleaner longer because they’re located on the inside of the glass. Also, when fully open, the sash on a casement window barely obstructs the opening. In the case of an emergency, this larger space allows residents to evacuate through a smaller rough opening than would be possible with other style windows.