Over time motor joints can become deteriorated and began to erode this can weaken the seal between the bricks and loosen the structure as a whole. Tuck pointing is the replacement of the deteriorated mortar with fresh new mortar. when the mortar joints are cracked and damaged they are ground out with a diamond blade then the area is cleaned. Once the surface cleaned it is moistened, to allow the new mortar to bond well. New motor is applied and too old to match the existing brick work. variations in jointing and tooling methods, can also increase the resistance to the elements. color can be added to help blend in the tuck pointing.