I have a woodstove that vents straight up through the floor into a large walk in closed then straight up through the roof from there. I have had it unhooked (stovepipe gone) for a number of years and want to re-install the stovepipe. We always had double wall stovepipe going through the closet up through the roof. I am told now that current code requires boxing in the pipe with studs and drywall. I am very hesitant to wall in the stovepipe. Does anyone else have an installation like this?