Tried the brush on a flexible rod and it came back with more soot than I put in
Tried the flexible rod and brush on a flue in an old house in Dayton last week. Thought I had it clean after two passes, so I sent my camera down. It came back showing a half inch of glazed creosote packed on the back wall above the damper. I ran the brush again at a slower speed with a slight angle and got a much better bite. Now I'm second guessing how many jobs I called done after a quick pass. Anyone got a way to tell when you're hitting all the buildup and not just the easy stuff?