What is a cordon?
A cordon (also called a string course or belt course) is a horizontal, projecting moulding on a façade that marks the transition between two storeys or between the wall and the roof. It is both a decorative and functional element that has been used in architecture for centuries.
Functions of a cordon
- Articulation — the cordon visually divides the façade into horizontal zones, making the building look more proportionate
- Water shedding — the projection deflects rainwater before it reaches the wall below
- Style feature — in many architectural styles, the cordon is a recognisable decorative element
Applications
Cordons appear in various architectural styles:
- Classical architecture — natural stone cordons marking floor separations
- Historic façades — brick cordons made from profiled or natural stone
- Fortifications — a cordon marks the transition from the wall base to the upper works
- Modern architecture — simplified cordons as concrete or steel façade bands
Materials
Cordons are made from natural stone (limestone, sandstone), brick, concrete or cast stone. On listed buildings, cordons are often richly profiled with classical mouldings.
Related terms
- Cornice
- Plinth
- Articulation
- Frieze
- Façade
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