Gjac wrote:
Over the years I have tried a number of caulking compounds. I started with Geocell but im not sure of the compound type. A roofer told me to use it. It lasts the longest with less mold.
Must be Geocel ProFlex RV. This is what the OP is trying to avoid, as it's difficult to remove, and when I think of it - doesn't appear to be valid excuse.
I tried it too. It is similar to renowned Dicor, only skins a bit faster - for this reason I would prefer it to Dicor on vertical surfaces. It doesn't shrink (Dicor shrinks A LOT), and doesn't bubble. Same as Dicor, it becomes harder after a few years and is difficult to remove.