I have an attached two car garage in which I want to install a wood furnace. I purchased a new Hearth Century wood stove today. I realize you are not supposed to install a wood stove in a garage, but my plan is to turn the garage into a game room or something like that. The garage walls are constructed of cement blocks. My plans are to sit the stove on the opposite side of the two entry doors. I want to run the flu through the block wall and up. I estimated the distance from the top of the stove to the roof line is about 12 feet or so. I found a diagram of a complete wood stove chimney on this forum but couldn't get it to enlarge or print off correctly. My question is this. What will I need, single or double walled pipe? I dont think I have the money to have a regular chimney built so I am hoping this will work out. My next plan is to cut holes for a register in each room to heat that side of the house. I have attached a photo of the garage in hopes this helps. Oh, by the way. The garage will be cleaned and the bass boat moved out. The stove will be sitting to the left of the refrigerator which will be moved as well.