I have a through the wall class A chimney pipe for my wood stove. Last year I noticed the inner wall at the 2 joints was bent up a little. I took the pipe down to investigate before burning this year. My question is should I replace these 2 pipes?
![[Hearth.com] Chimney Pipe Inner Wall Bent At Joint](https://www.hearth.com/talk/data/attachments/282/282685-2ce00b0e6d947403039c75aee95651e2.jpg?hash=0BFiJdIMyN "[Hearth.com] Chimney Pipe Inner Wall Bent At Joint")
![[Hearth.com] Chimney Pipe Inner Wall Bent At Joint](https://www.hearth.com/talk/data/attachments/282/282686-d63d098eea679c2c283ec37fb1a5393e.jpg?hash=OxCctoF1BH "[Hearth.com] Chimney Pipe Inner Wall Bent At Joint")
Chimney Pipe Inner Wall Bent At Joint
- Thread starter frederico265
- Start date
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![[Hearth.com] Chimney Pipe Inner Wall Bent At Joint](https://www.hearth.com/talk/data/attachments/282/282687-9fbb345816a29ed43d6bd6eb0e2a96aa.jpg?hash=-QHzt-xCdg "[Hearth.com] Chimney Pipe Inner Wall Bent At Joint")
![[Hearth.com] Chimney Pipe Inner Wall Bent At Joint](https://www.hearth.com/talk/data/attachments/282/282688-77d4d71508fe968c1dccc126a3f65adc.jpg?hash=o0KZLf-D7G "[Hearth.com] Chimney Pipe Inner Wall Bent At Joint")
Looks like the lip could be straightened out carefully with broad jaw pliers like electrician's pliers.
The second piece that I posted isn’t as bent and doesn’t appear to have soot/creosote on the outside of the lip. The first piece has soot and discoloration on the outside of the lip. How important is an airtight chimney? I can bend it back but the seal won’t be factory.
![[Hearth.com] Chimney Pipe Inner Wall Bent At Joint](https://www.hearth.com/talk/data/attachments/282/282695-ba94c678a60f0d659c3c5b5209c1f01f.jpg?hash=pV3JmdLhwi "[Hearth.com] Chimney Pipe Inner Wall Bent At Joint")
What are you using to clean your chimney? It looks like your brush may be catching edges
I thought that also. I use a poly brush with fiberglass rods. I have two 30 degrees elbows to go around the roof edge. I can only get the brush past one elbow at a time without jamming it down. So I do the top from the roof then the rest from the bottom clean out. I don’t think I’m being too rough to cause damage. I was looking at trying the soot eater out to see if I can get past those elbows from the ground. I hate going on the roof.
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