A dado rail, also known as a chair rail, is a type of moulding fixed horizontally to the wall around the perimeter of a room.
The dado rail is traditionally part of the dado or wainscot and, although the purpose of the dado is mainly aesthetic in modern homes, the dado rail still provides the wall with protection from furniture and other contact. Traditionally, the height of the dado rail is around 36" or 900 mm, which was a suitable height to protect the wall from the backs of chairs. Since the original purpose of the dado treatment is not applicable in modern homes, it is common to see dado rails at 1200 mm or even 1500 mm from the floor.
Dado rails are also sometimes applied to a wall without the full dado treatment. The purpose of the rail in these cases may still be protective, and it is common in environments where walls are subject to a lot of wear and tear, such as shopping centres and hospitals.
Dado may refer to:
In architectural parlance, the dado is the lower part of a wall, below the dado rail and above the skirting board. The word is borrowed from Italian meaning "die" (as an architectural term) or plinth.
This area is dramatically given a decorative treatment different from that for the upper part of the wall; for example panelling, wainscoting or lincrusta. The purpose of the dado treatment to a wall is twofold: historically, the panelling below the dado rail was installed to cover the lower part of the wall, which was subject to stains associated with rising damp; additionally the dado rail (also known as the chair rail) provided protection from furniture, in particular the backs of chairs. In modern homes, the dado treatment is generally aesthetic.
The name derives from the architectural term for the part of a pedestal between the base and the cornice.
Dado in carved oak, designed by W.S. Barber at Spring Hall, Halifax
Dado in carved oak, designed by W.S. Barber at Spring Hall, Halifax
A dado (US and Canada), housing (UK) or trench (Europe) is a slot or trench cut into the surface of a piece of machinable material, usually wood. When viewed in cross-section, a dado has three sides. A dado is cut across, or perpendicular to, the grain and is thus differentiated from a groove which is cut with, or parallel to, the grain.
A through dado involves cuts which run between both edges of the surface, leaving both ends open. A stopped or blind dado ends before one or both of the cuts meets the edge of the surface
Dados are often used to affix shelves to a bookcase carcase. Combined with a rabbet (rebate) on an adjoining piece, they are used to make the rabbet and dado joint, sometimes used in case goods.