Greetings. I am looking to remove a metal wood burning fireplace insert from my wall, and I want to cover the opening with drywall so I can have a functional wall. I can figure out how to remove the insert no problem, but am not sure the proper way to seal off that hole since there will still be a chimney. I have read that I need to just place a cap on the chimney and put a vent in the drywall i install over the fireplace opening. I have also heard that I can take a piece of metal and adhere it to the top of the chimney with a bead of caulk to form a water tight seal and then I wouldn't have to vent the drywall. I just want to make sure I do this correctly so that I don't risk any moisture damage in the future and so that I don't constantly have a drafty opening into a chimney that will kill my centeral heat and air efficiency. Anyone got any input on this?
Thank you, Rod. This is indeed an exterior wall and I do plan to insulate it. I didn't like the sound of a vent and wasn't sure in my reading why anyone would do this and not try to seal the chimney with a waterproof seal of some sort. The method you suggested seems to be the answer I am starting to get more often. Thank you, sir.