Quote:
I think the solution is more likely to be extending the length and exit location of the chimney.


While the following link applies to brick, there may be some good information for sizing of the chimney's flue.

http://www.gobrick.com/BIA/technotes/t19a.htm

Another option would be to use a gas insert instead of wood. I don't think it's as nice, but it is less work and isn't smokey at all. Does the outside fireplace have a chimney at all, or is it an open-pit type?

-Zeke
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