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Moving testament

Lime built structures can tolerate seasonal and minor structural movement without damage to masonry or joints. Any movement is taken up by minute adjustment within the flexible mortar beds over the many courses of brick or stonework. The hairline cracks that may occur can subsequently be resealed by so called autogeneous healing. The mechanism for this is not well understood but may involve continuous carbonation or re-carbonation of deposits of lime out of solution.

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