We really want to get a wood stove installed, but can't find anyone locally to answer our questions and I know you guys will have some good ideas so here goes. Our house has 3 masonary chimneys, 2 of which appear to be lined with terracotta and 1 that we cannot see into and does not actually come out through the roof. The 2 lined chimneys are currently used to vent the 2 propane boilers used for our baseboard heating. The baseboard heaters go around the external walls of the house in each room. Can a woodstove share a chimney with the propane boiler? Would that be a better option than extending and lining the unused chimney? If we can't use any of those chimneys, we could get an external flue thingy built, but would it be a problem to have a woodstove on the same wall as the baseboard heaters? What else do we need to know?