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A bolection is a decorative moulding which projects beyond the face of a
A bolection is a decorative moulding which projects beyond the face of a panel
Panel may refer to:
Arts and media Visual arts
* Panel (comics), a single image in a comic book, comic strip or cartoon; also, a comic strip containing one such image
*Panel painting, in art, either one element of a multi-element piece of art ...
or frame in raised panel walls, doors, and fireplace
A fireplace or hearth is a structure made of brick, stone or metal designed to contain a fire. Fireplaces are used for the relaxing ambiance they create and for heating a room. Modern fireplaces vary in heat efficiency, depending on the design.
...
s. It is commonly used when the meeting surfaces are at different levels, especially to hold floating panels in place while allowing them to expand and contract with changes in temperature and humidity.
Also sometimes called balection or bilection, the term is of uncertain etymology and was first used in the early 18th century. Bolection was used to great effect by Christopher Wren
Sir Christopher Wren PRS FRS (; – ) was one of the most highly acclaimed English architects in history, as well as an anatomist, astronomer, geometer, and mathematician-physicist. He was accorded responsibility for rebuilding 52 churches ...
.
Bolection mouldings are usually rabbeted on their underside to the depth of the lower element, but attached to the upper (when panels are allowed to float) or both (when merely decorative).
Bolection mouldings were also regularly used in the 16th and 17th century for picture frames. On frames of this type, the highest point of the moulding is close to the sight edge (the inner edge of the frame which meets the picture), from which the profile descends towards its lowest point at its outer edge. Such frames are sometimes described as bolection frames but more often as "reverse profile" frames.
References
Architectural elements {{architecturalelement-stub