Tuckpointing is where two contrasting colours of mortar are used in brickwork to give the impression of fine joints. One colour will match the bricks and the other colour will be a contrasting colour (such as white or black). This contrasting colour will create a fine joint which gives an impression of perfectly gauged brickwork. In order to achieve this, the original mortar is removed before applying the two new mortars.
History of Tuckpointing
The tuckpointing method was developed in England to imitate brickwork constructed using rubbed bricks. The term tuckpointing derives from an earlier, less sophisticated technique that was used with very uneven bricks: a thin line, called a tuck, was drawn in the flush-faced mortar, but left unfilled, to give the impression of well-formed brickwork.