I have an install question. I have been reading up as much as I can and you guys have been a big help. Just trying to understand the process of installing a metal chimney so I understand what the installers need to do. Seems it's not rocket science, but it is kind of important to do it right. I believe my install will go straight up through the roof. Pretty straight forward. My question is the room it is going into is on the back of my house and was added on after the house was originally built. The house is a ranch style house with an attic. The room that was added on the back has no attic and a lot less of a roof pitch. The ceiling in the room has two by six trusses with insulation in between covered by sheeting covered by tar paper covered by shingles. What is the name of the device that gets the triple A pipe through the ceiling. Also since the pitch is different on this room than the rest of the house should the installers still be able to use the old rule three feet above where the pipe penetrates the roof and two feet higher than anything within 10 feet of it. I'm just trying to be on the same page as the installers. Thank you.
