Sweeping
A sweep is the traditional rod-and-brush service: working a stiff brush down the full length of the flue to clear what general cleaning alone can't reach.
Sweeping uses a rod-and-brush system run the full length of the flue, from the cap down to the smoke chamber, to dislodge compacted soot and glazed creosote. It works on masonry chimneys, factory-built metal chimneys and wood stove flues, and it's the step that catches buildup sitting above what's visible from the firebox.
Creosote becomes harder to remove the longer it sits, and certain burning habits make it worse — low, smoldering fires, restricted air supply, and burning unseasoned or wet wood all produce thicker, more stubborn deposits than a hot, well-ventilated fire.
The crew sets up protective covering at the firebox, runs the brush system the full length of the flue from the top or bottom depending on access, and clears the dislodged material out through the firebox. A flashlight or camera check afterward confirms the flue is clear.
Fireplaces and wood stoves used through a long, cold heating season accumulate creosote fastest, which is why an annual sweep before the heaviest part of winter matters most in colder markets — but any wood-burning system, regardless of climate, should get a sweep at least once a year if it's used regularly.
FAQ
Chimney Sweep