Awning windows; double-hung windows, casement windows, sliding windows, special shape windows or the bay and bow windows are all options for windows over a kitchen sink. Awning windows work well over a sink because they are easy to open.
Awning windows are efficient during the rainy seasons since they can open slightly and no water gets in. Double-hung windows are used mostly in traditional-style homes. They are good for ventilation, and the top sash lowers for warm air and the bottom sash raises for cool air.
Bay and bow windows are useful for rooms with limited wall space. Casement windows close and open easily. Sliding windows have one sliding sash.