Chimney liner

[G Archer]

This year I am going to take out a free standing Fisher wood stove,open up the fireplace which has been bricked over and install a wood burning insert.My chimney is brick with no liner.It is 24''x24'' inside.Im going to line it with a ss liner.Should I use the ridged type or the flexable type.Which is easier to clean?I would appreciate any suggestions.


Glenn Archer
Middle GA.

 

[Todd]

If there are no offsets and you have a straight shot I'd go with rigid, it's smooth no groves for creosote to stick to and probably drafts a little better.
You might need a short piece of flex to go around the fireplace damper area to the stove.

 

[LeonMSPT]

Yep... rigid to the offset, then flex to the adaptor for the stove.

 

[oconnor]

Agreed - rigid is better, even if you need to break out any clay liners. With 24 x 24 inside, you should be able to overcome most offsets in the flue - the fireplace offset will likely need the flex, and maybe a 30* or 45* elbow.

Also - consider insulating the liner. Here is a recent thread on that subject -https://www.hearth.com/talk/threads/34151/

lots of info in it, but in the end, here is the summary:
you should insulate your liner for 2 reasons -

1 - to limit radiant heat to the walls
2 - in order for it to be installed IAW the manufacturers instructions, therefore meeting code.

Another great 3rd reason is this - zero/zero specs of a insulated liner system means you can air seal and insulate around it without issues of flammability