What are vertical mortar joints between ends of masonry units, also known as cross-joints, called?

Vertical mortar joints that are located between the ends of masonry units are known as head joints. These joints play a crucial role in masonry construction as they help to ensure proper bonding between individual units such as bricks or blocks. The head joint is important for structural integrity, allowing for proper distribution of loads and providing a means for the mortar to fill any gaps, enhancing the overall stability of the wall.

Understanding the term "head joint" is essential for anyone working with masonry, as it helps in accurately describing and identifying specific joints during construction and inspection. Recognizing these types of joints allows for better communication among masonry professionals and ensures that construction practices adhere to industry standards.