A sweep visit is two jobs in one. The brushing is the visible half. The assessment of what is behind the soot is the half that tells you what to do next.
People book a chimney sweep expecting someone to brush the flue and leave. A proper visit is broader than that: the technician sweeps the system, then evaluates a chimney that can finally be seen properly, and leaves you knowing its actual condition.
That order is not arbitrary. A flue coated in creosote cannot be inspected, because you cannot assess a liner you cannot see. Which is why sweeping and inspection belong in the same visit rather than sold as separate calls months apart.
This page covers the visit itself. If you want the detail on creosote and soot removal, that is on the chimney cleaning page. If you need a documented inspection for a sale, a fire, or an insurer, see chimney inspections.
★ Scope of work
What is included
Arrival and setup
Floor covering from the entry to the hearth, drop cloths at the fireplace, HEPA vacuum sealed at the opening before any brush goes in.
Sweeping the system
Flue, smoke chamber, smoke shelf, damper, and firebox, with brush sizes matched to the flue.
Post-sweep evaluation
Liner condition, joint integrity, damper operation, blockages, and clearance concerns, assessed on a clean system.
Exterior and top check
Crown, cap, flashing, and the top of the stack, since roughly half of chimney problems start above the roofline.
Photos and findings
You see what we saw. Photos of anything that matters, explained without jargon.
Clear next steps
Whether that is a repair, a return visit next season, or nothing at all.
★ Warning signs
Signs you may need this
You burned through a season and have not had the chimney serviced
You have just bought a home with a fireplace of unknown history
The fireplace smells or smokes more than it used to
You want a documented baseline before the heating season
You are about to start using a fireplace that has sat unused
It has been more than a year since the last inspection
Seeing more than one of these usually means the underlying issue has been developing for a while. It is worth having looked at rather than watched.
Why this is not worth deferring
The sweep is what makes the inspection possible, and the inspection is what makes the visit worth booking. A chimney can be perfectly clean and still be unsafe: a cracked liner, a failing crown, and inadequate clearance to combustibles are all invisible to a brush.
There is a scheduling argument too. Demand for chimney work concentrates hard in the autumn, and roughly half of home heating fires occur across December, January, and February. Booking in late summer or early autumn means repairs found during the visit can actually be completed before you need the fireplace. If you are trying to work out your own interval, see how often you should clean your chimney.
In practice they overlap heavily. We use sweep for the full service visit, cleaning plus inspection plus report, and cleaning for the deposit-removal work itself. If you book either, you get both.
Usually about an hour to ninety minutes for a single flue, including setup, sweeping, inspection, and going through the findings. Heavy glazed creosote or multiple flues take longer.