I am installing a wood stove in a family room and bought manufactured chimney components(Supervent) to go up through ceiling, attic, and roof. Have chimney support, attic insulation shield, insulated chimney lengths, flashing, etc. This room is constructed on a concrete slab, single story, with plenty of blown cellulose in the attic.
Framed the ceiling for the support, then looked up to see roof is only 9 inches from the ceiling studs at my opening. This is a very shallow roof and I am 4 feet from the eaves. Problem is, the prefab attic insulation shield is 15 inches high from the support frame, so it ain't going to go. This thing has a couple of walls and is a sheet metal guy's pop rivet dream so I won't be cutting it short.
I am wondering whether I can construct my own chase between roof and ceiling frames and use this instead of the metal shield to keep the insulation at bay. And if I can, what dimensions? Any ideas?