paneling

thumb|220px| wainscoting using tongue and groove pine boards Panelling, or paneling in the United States, is a millwork wall covering constructed from rigid or semi-rigid components. These are traditionally interlocking wood, but could be plastic or other materials.

Panelling was developed in antiquity to make rooms in stone buildings more comfortable both by insulating the room from the stone and reflecting radiant heat from wood fires, making heat more evenly distributed in the room. In more modern buildings, such panelling is often installed for decorative purposes. Panelling, such as wainscoting and boiserie in particular, may be extremely ornate and is particularly associated with 17th and 18th century interior design, Victorian architecture in Britain, and its international contemporaries.