100 year old chimney

[Old homestead]

Our old homestead house, built in 1909, had a wood stove in the living room and a wood cookstove in the kitchen, separated by a wall about 14 inches deep. This wall had cabinets on the living room side, and a broom closet on the kitchen side. The 2 stoves were back to back, with each stovepipe going into a mud chimney that sat on a shelf of this wall. The chimney walls were about 3 inches thick. It worked fine for over 100 years, but during some recent maintenance on the house, we discovered the mud chimney was cracked and decided it would be wise to modernize the set-up. We wanted to go with triple-wall pipe in the same location as the old chimney, T in with one stove pipe above the other, and keep the one hole in the roof. However, we have been informed that it is impossible to have 2 stoves using one chimney, and there are no chimney parts available that would enable us to do so. If we have to make a second hole in the roof and have 2 chimneys, how close together can they be? It isn't feasible to change the locations of the stoves.

 

[Jags]

The pipes can be located fairly close together. You will want to have the height staggered up top to eliminate a potential back draft. Take into consideration how you are gonna cap those pipes. If far enough apart they can each have their own cap. Close together and you will have to use a different style.

 

[bholler]

Like jags said you need to keep them far enough apart that you can seal the top and use the caps but the pipes could be touching otherwise. We very rarly run into problems with back drafting from one to another chimney i would not worry about that but it could be an issue if it was you could always add a short section to one. Also you said triple wall you want insulated class a chimney it is a much better system. And who ever told you you cant run 2 stoves in one chimney is right it has been done many times but should not be it causes lots of issues and is against code in most areas.