A skylight is a window built into a roof structure. This type of window allows for natural daylight and moonlight.
EN 12519 is the European standard that describes windows terms officially used in EU Member States. The main terms are: Light, or Lite, Lattice light, Fixed window, Sash unit, Replacement window, New construction window, Lintel, Window sill, Secondary glazing, and Decorative millwork.
Double-hung sash windows were traditionally often fitted with shutters. Sash windows can be fitted with simplex hinges that let the window be locked into hinges on one side, while the rope on the other side is detached—so the window can be opened for fire escape or cleaning.
A hexagonal window is a hexagon-shaped window, resembling a bee cell or crystal lattice of graphite. The window can be vertically or horizontally oriented, openable or dead. It can also be regular or elongately-shaped and can have a separator (mullion). Typically, the cellular window is used for an attic or as a decorative feature, but it can also be a major architectural element to provide the natural lighting inside buildings.
➸ top hung window design➸ window seal