What is the typical function of flashing in masonry work?

The typical function of flashing in masonry work is to divert water away from joints. Flashing is a protective barrier designed to channel water that might otherwise penetrate the structure. It is typically installed at critical points such as where the wall meets the roof, around windows and doors, and at joints between different materials. By directing water away from these vulnerable areas, flashing helps to prevent water accumulation and infiltration, which can lead to damage from mold, rot, or structural deterioration over time. This protective measure is essential in maintaining the integrity and longevity of masonry constructions.

The other options do not accurately describe the main purpose of flashing. While structural support and bonding materials are crucial aspects of masonry, they are not the primary role of flashing. Additionally, while aesthetic appeal is important in construction, it is not a function of flashing. The primary role remains focused on effective water management to sustain the building's health.