LsFarm wrote:Hi Richard, if I'm reading this correct,, you will need to install a piece of flue pipe through the middle of the thimble. I'd recommend using SS pipe.
The thimble just provides a safe air-gap to combustibles, and a non-combustible hole to insert your flue pipe through..
The suggested SS flue pipe will go from the room, through the thimble, bridge the gap between the wall and masonry chimney, and poke into the ceramic liner of the masonry chimney,,, protruding into the chimney liner by less than an inch..
You could insert the SS flue first, seal it to the masonry from inside the house,, slide the thimble over it, secure the thimble, then sheetrock over the thimble, making it look nice from inside the room..
I think the above suggestions apply... a photo would help..
You have it right. The chimney was built about 30 years ago with a metal thimble protruding through the interior sheetrock) wall to connect a stove to. It rotted out years ago, but there is still some masonry around the hole in the wall. What I have been doing, for many years, is just shoving a short length of black stovepipe through the hole & into the outside chimney. (making sure I have it centered in the outside chimney flue) I replace this short pipe every year (due to rot, etc) but I want to make a more secure arrangement for next heating season. I figure that even if I just manage to connect the inside half of the thimble to the wall, I'll be ahead of the game & have a more secure mechanical connection for the stovepipe from the stove to the interior wall.
My question relates to the outside half of the thimble & how to connect that within the sealed chimney?? (like I said, if I can only get the inside half installed, it will still be safe & better than the way I have been doing it for many years)