inside or outside chimney?

bumblebee · Jun 18, 2018

Hello,
Wasent sure where to post this question. Hope ok here.
In the past ive always had a indoor single chimney with my mama bear fisher stove than tru the roof. This new house here, theres an old hole in the wall with an outdoor brick chimney but its no longer good and needs to be torn apart. im low on cash and thinking taking this chimney apart might be expensive and will have to redo siding as well. Was thinking either making a new hole in my wall beside old one and putting a double walled pipe outside or going straight up tru the metal roof with either a single pipe indoor to a double outdoor or double pipe all the way. Anyone has any sugestions on this? thank you.

begreen · Jun 18, 2018

Straight up through the roof is best and often the least expensive approach. You'll want a good metal roof flashing - properly installed. Excel makes one. Double wall stove pipe is better than single-wall but if the budget is tight then single-wall will work for the Summit. Just make sure the 18" clearance is met or exceeded.

Cast Iron · Jun 21, 2018

As said above, Excel or Selkirk double wall insulated piping interior is well worth the extra cost long term.
The clearances to combustibles are about 2" for both makers of insulated pipe. The construction bracketing of the thru the roof mechanics are simpler than single wall with an 18" clearance.
The pipe stays hotter for efficiency and cleaner burns.

Alexander L · Jun 21, 2018

I had to go through a wall thimble, and run chimney all the way up on the exterior. It was expensive, as begreen suggests. All that stainless class A chimney, support brackets, etc. I would have preferred to have gone straight up and through the roof... if that were an option.

begreen · Jun 21, 2018

Cast Iron said:
As said above, Excel or Selkirk double wall insulated piping interior is well worth the extra cost long term.

Just to clarify, only stove (connector) pipe is required from the stove to the room penetration (wall or ceiling) after that the flue transitions to chimney pipe. Stove pipe comes in single-wall (18" clearance) and double-wall (uninsulated, 6" wall clearance). Chimney pipe (double or triple wall) has 2" clearance.

bumblebee · Jun 21, 2018

begreen said:
Straight up through the roof is best and often the least expensive approach. You'll want a good metal roof flashing - properly installed. Excel makes one. Double wall stove pipe is better than single-wall but if the budget is tight then single-wall will work for the Summit. Just make sure the 18" clearance is met or exceeded.

Thank you

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inside or outside chimney?

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