Glossary

PlinthProjected detail at the base of a building

Riser Vertical face of a step

Quoin Large feature stone on the corner of a building

Cill Lowest horizontal member of a window or door opening

Stooling Section of the mullion carved in the cill and lintel

Jamb Vertical stone to the external edge of the windows and doors

Mullion Vertical dividing stone in a window opening

Transom Horizontal member subdividing window openings

Lintel Horizontal supporting stone at the top of a window or door opening

Hood Mould Projecting moulding over a door or window

Portico Substantial stone detail to create a projected entrance

Springer Stone from which the arch springs

Voussoirs Wedge shape stone forming unit of arch

Keystone Central stone of a lintel or arch detail

Course Continuous layer of stone of a uniform height

Band Course Plain unmoulded sometimes projecting course along the face of a building

String Course Moulded projecting course similar to the above

Pillaster Shallow pier or part column projecting from the wall

Corbel Small square section stone feature projecting from the wall often used to support the gutter

Kneeler Stone at the base of a coping detail on a gable end

Coping Flat square section detail on a top wall

Chamfer Angle plained off to the leading edge of a square section of stone often used on a plinth course

Splay Any surface inclined to a main surface

Throat / Drip Channel cut out of a projected stone detail such as the cill to avoid water from soaking/staining

Rebate Continuous rectangular sinking along the top or bottom edge of the stone face to create a recess

Return A single piece of stone with a right/left angle to create the impression of a thick wall or avoid repeating a jointing detail

Return End Termination of stone worked to form an external mitre