A homeowner in Boise taught me more about my own job than 3 years on the truck
I was finishing a second degree creosote sweep on a rental property last month, and the landlord was watching me the whole time. Older guy, retired firefighter. He didn't say anything until I was packing up my rods. Then he pointed at the smoke shelf and said, "You're leaving a shadow zone right there. You go fast in the middle and slow on the edges, but that flat spot behind the throat never gets touched unless you angle your brush."
I told him I'd been doing it the same way since I started, and he just shrugged. "That's what every sweep says until they see the shine difference." So I redid the whole thing with the brush at a 45 degree angle, took an extra 20 minutes, and sure enough a decent layer of black dust came off that shelf that I would've sworn was clean.
Now I angle the brush on every single chimney, even the straight ones. It adds time but the visual check at the end is way better. Has anyone else had a customer call out a flaw in your technique that turned out to be right? I feel like we get stuck in our rhythm and miss the obvious stuff.