By Jeremy from MA on April 10, 2017
Does this work on r-panel metal roofs?
By Will M. on April 11, 2017
Answer:This trim is not made for use with metal roofs and the manufacturer of this chimney, much like all manufacturers of UL127 listed wood burning fireplaces and their proprietary chimney systems, does not provide a flashing made for metal roofs.
With that being said, and having experience with installing a similar flashing with an R-Panel roof, you can slit the metal roof so that the top portion of the flashing slips underneath. After measuring the footprint of the flashing at the base and, only after the flashing has been placed, and prior to securing the flashing to your roof per the manufacturer's instructions, you will have to cut the ribbing beneath where the lower portion of the flashing will be secured to the roof in order to provide a flat surface. The remaining instructions are from the product literature for the WCT/WRT2000 series:
"When installing flashing on a metal roof, it is required that putty tape
be used between flashing and roof. Flashing must be secured to roof
using #8 x 3/4" screws and then sealed with roof coating to prevent
leakage through screw holes. A roof coating must also be applied
around perimeter of flashing to provide a proper seal."