Although specifically intended for historic buildings, the guidance is appropriate for other masonry buildings as well. It should also help develop sensitivity to the particular needs of historic masonry, and to assist historic building owners in working cooperatively with architects, architectural conservators and historic preservation consultants, and contractors. The Brief should serve as a guide to prepare specifications for repointing historic masonry buildings.
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The purpose of this Brief is to provide general guidance on appropriate materials and methods for repointing historic masonry buildings and it is intended to benefit building owners, architects, and contractors. Improperly done, repointing not only detracts from the appearance of the building, but may also cause physical damage to the masonry units themselves. Properly done, repointing restores the visual and physical integrity of the masonry. Repointing, also known simply as "pointing"or-somewhat inaccurately-"tuck pointing"*, is the process of removing deteriorated mortar from the joints of a masonry wall and replacing it with new mortar. Although generally considered "permanent," masonry is subject to deterioration, especially at the mortar joints. Structures with all-masonry exteriors come to mind immediately, but most other buildings at least have masonry foundations or chimneys. Masonry-brick, stone, terra-cotta, and concrete block-is found on nearly every historic building.
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