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Firewood, Heating and Wood Burning Equipment
Masonry Chimney getting hot to the touch after new insert installed.
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<blockquote data-quote="taskswap" data-source="post: 3931136" data-attributes="member: 83194"><p>I have the pour-down type of insulation around my chimney liner, and I'm really happy with its performance. It's vermiculite and a small amount of portland cement - real dusty to work with until you wet it down, which you only do to "a little damp" (it's not like concrete). It pours down easily, although I wish I had mixed it on the roof. Getting it up there in buckets was a pain.</p><p></p><p>Still, it was easier than working with an insulation blanket and worrying about getting a hole in that somewhere. Whoever built my chimney didn't set the flue tiles perfectly straight, and the offsets would have made it a real job to get a liner plus blanket in properly. This also fills the corners, so it seems like it would insulate better than just the blanket. I dunno, but it's an exterior chimney (no other choice) and it drafts fine and doesn't seem to build much creosote. I have a boiler with hot water storage so I tend to run pretty hot anyway, but I'm happy with it.</p><p></p><p>I don't know how the safety factor works out but it seems like even if there was a pinhole or hot spot in the liner somewhere, this stuff would protect the chimney, no?</p></blockquote><p></p>
[QUOTE="taskswap, post: 3931136, member: 83194"] I have the pour-down type of insulation around my chimney liner, and I'm really happy with its performance. It's vermiculite and a small amount of portland cement - real dusty to work with until you wet it down, which you only do to "a little damp" (it's not like concrete). It pours down easily, although I wish I had mixed it on the roof. Getting it up there in buckets was a pain. Still, it was easier than working with an insulation blanket and worrying about getting a hole in that somewhere. Whoever built my chimney didn't set the flue tiles perfectly straight, and the offsets would have made it a real job to get a liner plus blanket in properly. This also fills the corners, so it seems like it would insulate better than just the blanket. I dunno, but it's an exterior chimney (no other choice) and it drafts fine and doesn't seem to build much creosote. I have a boiler with hot water storage so I tend to run pretty hot anyway, but I'm happy with it. I don't know how the safety factor works out but it seems like even if there was a pinhole or hot spot in the liner somewhere, this stuff would protect the chimney, no? [/QUOTE]
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