Power-sweeping is how we get baked-on creosote and soot off the walls of a commercial exhaust flue. The brush scours away the hard, glazed buildup a light cleaning would miss, the exact fuel that chimney fires are made of, and brings a hard-used pizza oven flue back to a safe, clear draft.
What power sweeping is
Instead of a hand brush on rods, a power sweep spins a head against the flue wall with real torque. It knocks off the hardened layer that has been heat-cured to the liner, which manual brushing mostly polishes. The debris drops to a controlled cleanout, not into the kitchen.
Glazed creosote is the dangerous kind
Loose soot brushes out easily. Glazed creosote is the shiny, tar-like third stage, dense, high-fuel-value, and the material that burns in a chimney fire. Once a flue glazes over, ordinary cleanings stop working, which is when mechanical scouring earns its keep.
What a clean flue changes immediately
The oven breathes again. Draft recovers, fires light faster and burn hotter with less smoke roll-out at the door, and the flue walls go back to bare metal or masonry that we can actually inspect. Draft you can feel, and a fire risk you can measure going down.
