The process of repairing defective mortar joints by refilling them with fresh mortar is known as?

The correct terminology for the process of repairing defective mortar joints by refilling them with fresh mortar is referred to as pointing. Pointing involves applying mortar to the joints in masonry to restore their integrity and improve the overall appearance of the structure. This technique not only helps in maintaining the aesthetic quality of the masonry but also plays a crucial role in preventing water infiltration and structural deterioration.

In contrast, while tuckpointing may sound similar, it specifically involves a technique where narrow lines of mortar are applied to give the appearance of finely jointed brickwork. Grouting refers to injecting a flowable material into spaces to fill voids or to strengthen the bond between elements, which differs from the focused application in pointing. Mortaring is a more general term that encompasses the entire process of applying mortar in masonry work and does not specifically address the repair of existing joints. Thus, pointing is the precise term for the action described in the question.