Old timer in Tulsa told me to stop brushing cold flues in winter and it finally makes sense
Had a job in Tulsa back in January, big old brick house with a clay liner, and the homeowner had been burning wet oak all winter. I started brushing like I always do, cold flue, dry, and the old timer who trained me years ago always told me to hit it cold so the creosote flakes off better. Well this time it just smeared into this sticky black paste and I spent an extra 90 minutes scraping it off the walls by hand. Called him up and he laughed and told me he'd been saying for 20 years to warm the flue first with a hair dryer or a small fire, just enough to make the glaze brittle before you touch it. Cost me a whole afternoon and I almost had to reschedule my 3 o'clock. Now I bring a little heat gun on every cold job and it takes me half the time. Anyone else's mentor have a rule that only clicks once you screw it up yourself?