I have a 2013 30.5 BHLT with the Coleman-Mach roof-mounted air conditioner. I am resealing all of the various items on the roof (skylights, antennas, fan hatches, ladder mounts, etc). I'm wondering if I need to lay down a bead of sealant/caulk around the roof where it meets the metal bottom mounting plate of the air conditioner.
There seems to be a insulating pad of some type between the air conditioner and the roof, but I'm wondering if I should beef that up a bit with sealant.
It's not leaking now, I want to keep it that way.
By the way, I'm using Dicor Ultra Sealant (with the special primer), and it seems to be working well on my TPO roof.
I hope this question hasn't already been asked and answered.
Many thanks for your thoughts.