Where should the bottom of the metal counter flashing be terminated on a tar and gravel roof intersecting a wall?

When terminating the bottom of metal counter flashing on a tar and gravel roof that intersects with a wall, it is crucial that the flashing is designed to effectively manage water and prevent any potential leaks. Terminating the counter flashing in a hem allows for a clean and secure finish that channels water away from the wall and into the flashing itself.

A hem is formed by folding the bottom edge of the flashing back on itself, creating a rounded edge that helps to prevent moisture from seeping behind the flashing. This design feature not only enhances the water-shedding capabilities of the flashing but also reduces sharp edges that could cause potential damage or injury during maintenance.

The hemmed termination contributes to the durability of the flashing, ensuring it remains secure under various weather conditions while also providing a quality finish that will withstand the test of time. It also ensures that any water running down the wall is effectively redirected onto the roofing surface, minimizing the risk of water intrusion.

In contrast, other terminations, such as at the edge of the wall, in a groove, or below the roof membrane, do not provide the same level of protection or effective water management as a hem. They could lead to potential water pooling or leakage, compromising the integrity of the wall and the