Repointing should use lime mortar, coloured as necessary, and applied in the original style. Typically, mortar is flush to the brickwork, often stained to match, and sometimes tuck-pointed.
Tuck-pointing is very expensive; if possible use it in exposed areas, with plain flush pointing elsewhere.
Tuck-pointing takes a long time to learn and perfect properly. There are courses available for suitable candidates, but training will take at least a week to ensure the necessary skills and accompanying knowledge can be taught.
See the Design section for more information.