String course
Definition
A string course is a continuous horizontal band, typically made of brick or stone, that projects from the exterior wall of a building. It serves both decorative and functional purposes, often used to visually divide different stories of a structure or to delineate changes in materials and architectural features. Beyond its aesthetic contribution to the facade's rhythm and scale, a string course can also act as a weather-shielding element, helping to deflect rainwater away from the wall surface below.
Structural & construction notes
Common types of string courses include flush bands that sit level with the wall surface and projecting courses that extend outward, sometimes featuring molded or intricate decorative profiles. They are often categorized by their placement, such as sill courses that align with window sills or floor-level courses that differentiate between stories. Based on design, they can range from simple, plain bands to ornate features incorporating carvings, cornices, or contrasting materials like cast stone, brick, and marble. Common materials for a string course include brick, stone, and cast stone, with wood or precast concrete also used. Natural stone and cast stone offer high durability and fire resistance but come with higher initial costs; however, they require less long-term maintenance than wood or painted surfaces, which are more affordable upfront but prone to weathering and decay.
Frequently Asked Questions
An educational reference. Project-specific design requires professional guidance.