Lowest face of a chimney should have a what kind of Flashing?

The lowest face of a chimney should have a step flashing system. This type of flashing consists of overlapping pieces that direct water away from the chimney and onto the roofing material below, preventing leaks. Additionally, counter flashing may be installed to cover the top edge of the step flashing, providing extra protection against water intrusion. Proper installation is crucial to ensure the longevity and integrity of both the chimney and the roof.