What is the correct method for flashing around a chimney on a tile roof?

The correct method for flashing around a chimney on a tile roof is counter and pan flashing. This approach is effective in preventing water from entering the junction between the chimney and the roof. Counter flashing is installed into the masonry of the chimney, while pan flashing is positioned underneath the roof tiles and directs water away from the chimney, ensuring that it runs off the roof rather than pooling around the base of the chimney. This method is particularly important on tile roofs, which can have unique water flow characteristics due to their interlocking design.

Using counter and pan flashing helps maintain the integrity of the roof and prevents leaks that could lead to damage both to the structure and to the chimney itself. Other methods, such as layered or single-piece flashing, may not provide the same level of protection or could result in water intrusion if not executed properly in conjunction with how tile roofs work.