Hey, I am running a 7" ASHT+ insulated chimney pipe from my BIS Panorama straight through my roof (no attic). The ceiling is vaulted where the chimney goes through the roof and the pipe is obviously chased all the way up. I know you need a firestop going through a ceiling, but do I need one if it is going straight through ther roof? Also, I'm assuming (but not sure) that I will need some sort of angled firestop? I have a feeling I definitely will get a unanimous "OF COURSE YOU DO!"...but I want to make sure. Thanks