Old timer told me soot buildup was fine for creosote cleaning
My grandpa's buddy Ed swore that leaving a thin layer of soot on the flue walls actually helped seal cracks, so I skipped a full scrape on Mrs. Harrison's chimney last fall. Three months later she called me back with a chimney fire that nearly took out her roof, and I had to eat crow and redo the whole job for free. Has anyone else gotten bad advice from the old guard that cost you?