In the context of residential construction and masonry work, frogging refers to the manufacturing practice of creating a small indentation, depression, or trough—known as a frog—on the flat bedding face of a brick. When bricks are laid with mortar, this recessed pocket fills with mortar, creating a mechanical interlock between adjacent courses that significantly enhances the shear strength and structural stability of the brick wall. While less common in modern veneer installations, historical masonry utilized frogging to reduce the overall weight of the bricks, save on raw clay material during production, and improve thermal insulation properties. Occasionally, the term can also colloquially refer to structural settling noises or moisture condensation quirks in older homes, but its primary technical definition remains rooted in bricklaying and masonry engineering practices.
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