Hi All, I'm getting ready to install the first of two wood stoves. It is a Regency model R6, 1988 vintage, with 6" plumbing. Last Saturday I poured a concrete hearth. The picture is my little boy keeping the concrete wet. I have two questions I'm hoping to get help with: 1.) The Regency R6 is going in my basement. I will end up purchasing another wood stove to go in my great room on the main floor. It will be larger, and probably have an 8" exhaust. My question is, should I combine the chimney pipe for the two stoves into one, i.e. at the main floor the basement stove chimney pipe will tee into main stove chimney pipe and just one pipe will go on up through the roof? The basement stove is right under the main floor stove, and I have room in my chimney chase to go with two separate chimney pipes if I need to. 2.) I'm struggling with how to exit my chimney with the chimney pipe. Right now my chimney is a 2x4 stick-framed with OSB sheathing under a half inch stucco skin. Inside dimensions of 2'6" x 2'11". At some point it will get a brick veneer. It is capped with a pretty blue tarp that flaps in the breeze and leaks like a sieve. I've read and researched tons about chimney caps (crowns), and I'm ready to pour a cast-in-place concrete cap, but I just don't know how to run the chimney pipe thru the cap. I see a lot of references to flues and flue liners, clay flues, etc. Do I need any of that, or can I just form an opening (or two if I go with two separate chimney pipes) slightly larger than the OD of the chimney pipe, then run the chimney pipe up thru the crown and caulk around it with high-temp caulk? Thanks so much for any guidance. I'm not adverse to researching on my own, just can't find any good direction anywhere else with the above questions.