That is why chimney pipe is used there and it penetrates into the room below the ceiling. Class A chimney pipe is insulated. This insulation together with the enforced 2" air space is good protection. Note that at times, particularly on startup, flue temps can far exceed stove top temps. This year I saw 1200F (probe temp) flue temp with just a 250ºF stovetop. This was my error. I got distracted and let the stove burn wide open on start up for about 5 minutes longer than it should have. It's times like that when you really appreciate having a safe installation.for me i get nervous right where the chimney pipe goes thru the ceiling. Yeah its proper pipe and clearances are met but its still only a few inches away from that pipe to the wood. High temps are going to push the weakest link in your system to break and i get very nervous testing my chimney link.
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