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Re: what size chimeny
Yes, I left the air space between the flue tiles as insulation. I considered filling the space with some other insulator like perlite or vermiculite, but "air" was cheap (like me) and does just fine for this situation. I also liked the fact that there would be a little circulation/venting of heat.
I got my terra cotta flue tiles through a local cement/masonry business but I've seen salvaged sections at surplus/recycled building supply places. The last extension segments I added a month ago were obviously newly made...so they are out there.
As a side note: I was surprised that the new 12" extension section I added was not exactly the same size and color as the initial batch. You'll want to make sure to select & match any sections that will be visible.
Yes, I left the air space between the flue tiles as insulation. I considered filling the space with some other insulator like perlite or vermiculite, but "air" was cheap (like me) and does just fine for this situation. I also liked the fact that there would be a little circulation/venting of heat.
I got my terra cotta flue tiles through a local cement/masonry business but I've seen salvaged sections at surplus/recycled building supply places. The last extension segments I added a month ago were obviously newly made...so they are out there.
As a side note: I was surprised that the new 12" extension section I added was not exactly the same size and color as the initial batch. You'll want to make sure to select & match any sections that will be visible.
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