To prevent water damage to masonry work, tuckpointing is necessary. Most masonry damage is a result of worn mortar joints: as the mortar is worn away, water and contaminants are able to seep in, causing further damage to the mortar and bricks. Tuckpointing is the process of repairing this damage.
Think of tuckpointing like filling a dental cavity. If left untreated, the tooth decay worsens and grows. By filling this cavity, further decay is prevented and the tooth is no longer able to be compromised. Tuckpointing is similar to filling ‘cavities’ in the mortar of masonry work.