As you can see in this photo there is black plastic flashing and aluminum flashing as well as a lot of caulking. Its not instantly apparent where the leak is coming from. Reflashing this stack is a challenge to do correctly as its not a common roof material.

As you can see there is a red outline around the flashing. This is where we will tape off the roof making a nice straight square box. We will add a very thick layer of ALDO roof coating to the inside of this area completely coating this section of roof. We will the remove the tape for a good clean line.

As you can see in the picture there are gaps in the foam ridge liner that need to be sealed off due to blowing rain. We would address all of these while on the roof

This pipe boot looks like its seen better days. In all honesty its the wong kind of pipe boot for this roof but if it was also sealed off with ALDO  it would last several more years! We would tape off area in red, coat the roof and then remove the tape for a nice clean edge.