SS liner question, opinions needed

[pro5oh]

Gonna reline my 8x8 masonary chimney. Should I use solid liner or flex? solid is smooth inside. Do you have to use thermix insulation or wrap? The liner will only be about 15-20ft. I ask for your great wood burning expertise.

 

[Hogwildz]

Gonna reline my 8x8 masonary chimney. Should I use solid liner or flex? solid is smooth inside. Do you have to use thermix insulation or wrap? The liner will only be about 15-20ft. I ask for your great wood burning expertise.

If you use double wall rigid (Solid) it is insulated from factory between inner & outer skins, no need for further insulation.

 

[gangsplatt]

While I'm not an expert I'll tell you what I'm doing. I have a 8x8 clay lined flue 25' external chimney. I'm going to buy flex liner with 1/4" insulation wrap. I wasn't sure if I was going to do the insulations but someone on this forum mentioned that due to the fact that I have some cracked tiles I should insulate.

 

[jtp10181]

If you are going to to insulate due to structural issues with the chimney 1/4" is not enough, you need 1/2" insulation to make the liner system meet UL 1777.

 

[eba1225]

I think the question of solid -vs- flex comes down to how well you can install the ssolid. I used flex because I have a zig zag in my flue and to install solid would be impossible. Even the installing of the flex was a pain but I got it done and will be starting my second burning season.

 

[pro5oh]

my chimney is straght so ridgid should work. Just thought the ridgid will draft better and be easier to clean. I bet the flex is easier to install though.

 

[firebird400]

i installed a flex s s liner my self was very easy its only 14 feet i didnt insulate it interior wall and masary chimney in great shape