Originally Posted by mel s
Perhaps you mean "Eternabond tape" on the roof/cap joints and "Dicor self leveling caulk" elsewhere??
X's 2. 3M 5200 is an adhesive, good one too.
If you inspect existing sealant, and it is not pulling away from the sides, but just cracking due to age and exposure. You can usually just clean well, I use acetone, let dry, the use the self leveling Dicor to cover the old sealant and just a bit over to the roof for a fresh edge.
But suggest you it is needed only when visual inspection indicates it's time. If it looks good, leave it alone.