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Repointing is the process of renewing the pointing, which is the external part of mortar joints, in masonry construction. Over time, weathering and decay cause voids in the joints between masonry units, usually in bricks , allowing the undesirable entrance of water.
Tuckpointing was a way of achieving a similar effect using cheap, unrubbed bricks; these were laid in a mortar of a matching colour (initially red, but later, blue-black bricks and mortar were occasionally used) and a fine fillet of white material, usually pipe clay or putty, pushed into the joints before the mortar set. [4]
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Pointing trowel, a scaled-down version of a bricklayer's trowel, for small jobs and repair work. Tuck pointing trowel is long and thin, designed for packing mortar between bricks. Float trowel or finishing trowel is usually rectangular, used to smooth, level, or texture the top layer of hardening concrete.
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[1] [3] More eclectic materials used as gallets include brick, tile, beach pebbles, glass, and oyster shells. [8] In higher status buildings, galleting was superseded by square knapping the flints to produce flat, squared stones that produced a surface with little exposed mortar.