Thought a roto brush was overkill for a clay liner, then a sweep from Albany said one thing at the supply counter that stuck

Noah Chen · 2026-10-24T15:40:03.628049+00:00

He said the soft brush just polishes the glaze on hard clay and glides right over the crusted stuff at the smoke shelf, so I ran a roto on my next clogged flue and pulled out a bucket of black scale the old brush never touched, and now I'm second-guessing every soft-brush-only job I've done, so what's your cutoff for going roto on a standard clay tile?

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Thought a roto brush was overkill for a clay liner, then a sweep from Albany said one thing at the supply counter that stuck | Chimney Sweeps - nhfree.com