DePippo79 wrote:Hello again guys. Well chimney sweep came and looked. Still pushing s/s liner, but here's his reasons: 1) Oil burner flue is in sad shape next to it. Afraid the oil burner and coal exhaust ever leaked between flues (probably already happens) more damage could happen. 2) Afraid the coal acid will corrode the existing morter joints because the morter is already weak.
Keep in mind, draft is negative pressure...weak, but negative.
A lot of coal chimneys out there...they have just as weak mortar.
In the end...ya got to do what gives you that peace of mind, though.