I need to know more: is it coke, wood resin, a mixture of both, how thick, is it crusty or wet to touch, what has been burning in that flue?
Published by Ben Ohlmeyer, Director at Envirofluid
I need to know more: is it coke, wood resin, a mixture of both, how thick, is it crusty or wet to touch, what has been burning in that flue?