In order to "maybe" help my excessive draft issue i am having i am thinking of possibly shortning the 5 ft of class A above my roof line. It is about a foot below the peak of the roof. So my question is, I have to be 10 ft away in all directions and have to have a min of 2 feet sticking above that point... or if im at the peak i have to be 3 ft above that? That is what im understanding of all of this. So if it is the case what is the difference? Or am i missing something...