Mortar joints play a critical role in brick masonry, filling the spaces between brick to bind them together and provide structural integrity and strength. The thickness of these joints is variable, typically ranging from less than one-fourth inch to over half an inch, based on structural needs and specific applications.

The process of joint tooling is implemented as the mortar begins to harden. This technique involves compacting and shaping the mortar to enhance both the appearance and the durability of the brickwork, particularly in resisting adverse weather conditions.

There are several different profiles of mortar joints, each with its own aesthetic and functional benefits. These include concave, vee, raked, stripped, flush, ruled, and rodded joints. Concave and vee joints are particularly effective for outdoor settings due to their superior ability to shed water and resist the damaging effects of freeze-thaw cycles. Raked and stripped joints, meanwhile, are more suited to interior brickwork due to their distinctive visual effects. Flush, ruled, and rodded joints are versatile and can be used in both interior and exterior applications.

The construction process of brick masonry concludes with a thorough cleaning to eliminate any mortar stains, ensuring a clean and attractive finish. Proper curing of the brickwork follows, which is essential for achieving the desired durability and strength of the masonry.