Tuckpointing is the process of cutting out old mortar to a uniform depth and placing new mortar in the joint is used to repair mortar joints that have deteriorated.

Mortar joints are considered deteriorated when: 1.) They have eroded back more than 1/4" from the face of the unit or beyond the depth of the original joint. 2.) Cracks are visible within the mortar. 3.) The bond between brick and mortar is broken or the mortar is soft and/or crumbling. 4.) Any portion of a mortar joint is missing.