I think you need to use the Henrys 887 Tropi-Cool caulk on a roof treated with the Henrys 887 Tropi-Cool sealant coating due to the extreme slickness of the applied silicone coating, which might cause normal caulks to not adhere. You need to be VERY CAREFUL when you get up on the slippery roofs treated with this, especially if they are slightly moist from dew, etc. I normally just crawl, and don't stand up when I am on the roof now.
The good news is that the coating has sealed the roof very well from leaks in the deluge of "atmospheric rivers" California has been experiencing this winter/spring. Also, the sunny weather cooling effect of the high IR reflectance of the roof treatment has been pretty noticeable inside the trailer since I had it applied.
Lucky I had this done a few years ago when the prices were more reasonable.