Roof lantern

The glazed lantern was developed during the Middle Ages, one notable medieval example being that atop the 14th-century Octagon Tower at Ely Cathedral in England.

In 16th-century France and Italy, they began usage in orangeries, an early form of a conservatory structure with tall windows and a glazed roof section for wintering citrus trees and other plants in non-temperate climates.

[3] Modern lanterns benefit from advances in glazing and sealing techniques, plus the development of high performance insulated glass and sealants, which reduce energy loss and provide water-tightness in the same manner as conventional skylights.

They serve as an architectural feature, distinguished from commercial manufactured skylights by their custom design, providing unique views to the outdoors.

Roof lanterns for residential homes are usually constructed using a combination of triangular and trapezoidal segments, fitted within a UPVC or aluminium frame.