So speaking of fireplaces, entrance to my house is this big double volume with a gas fireplace. The fireplace simply isn't effective as I'd like and I've been thinking of replacing with a double sided wood burner.
First problem is that there isn't an existing chimney going to the roof. Per the picture below I think brick structure is hollow so I should be able to run chimney pipes up the inside.
Next issue would be the slab which forms the floor of the room above the existing fireplace. Would it be wrong to break a hole through this for the same chimney pipe?