What are the two styles of mortar joints that are considered good?

Concave and V joints are two styles of mortar joints that are considered effective due to their moisture management and aesthetic qualities.

Concave joints, which are formed by using a tool to press the mortar inward, create a rounded appearance. This design aids in directing water away from the joint, reducing the likelihood of moisture infiltration into the masonry structure. The inward shape also provides a clean, finished look, enhancing the overall aesthetic appeal of the masonry work.

V joints, on the other hand, are created when the mortar is shaped into a V formation. Similar to the concave joint, the V joint can effectively shed water, preventing it from lingering in the joint and thus decreasing the risk of damage due to moisture intrusion. The distinctive sharp angle of the V joint also provides a bold contrast with the surrounding masonry, making it visually striking.

Both joint styles are valued not only for their function in protecting against water intrusion but also for their contribution to the overall appearance of masonry work, making them preferable choices in various construction scenarios.