How often should I have my chimney swept?

For regular wood or solid fuel use, once or twice a year, and at least once before the heating season. Smokeless fuel and gas need sweeping less often.

Do I need to be home during the sweep?

Yes, an adult should be present to provide access, talk through any findings, confirm the work and receive the certificate.

What is a Certificate of Sweeping for?

It is documented proof your chimney was swept and checked by a registered professional. Many insurers ask to see it.

What to Expect From a Chimney Sweep

Most single, well-maintained chimneys take around 45 minutes to an hour to sweep, including inspection, room protection, the sweep, vacuum clean-up, a smoke test and your Certificate of Sweeping.

How long does a chimney sweep take?

Allow roughly 45 minutes to an hour for a typical open fire or stove with a straightforward flue. Long gaps between sweeps, heavy soot or tar, an old bird's nest, an awkward bend or a second appliance will all add time.

What happens during the visit

A good sweep follows a clear routine so nothing is missed and your home stays clean. Here is how a standard appointment runs.

A typical chimney sweep visit

Step	What happens	Approx time
Initial check and questions	The sweep asks how the fire has been behaving, when it was last swept and what you burn, then inspects the appliance and hearth.	5 mins
Sheeting up	Dust sheets go down over the hearth and surrounding floor, and the fireplace opening is sealed to contain dust.	5 mins
Sweeping the flue	The flue is cleared from bottom to top using rods or rotary power equipment to dislodge soot and deposits.	15 to 25 mins
HEPA vacuum extraction	A HEPA filter vacuum runs throughout and clears the grate, so soot is captured rather than escaping into the room.	5 to 10 mins
Smoke or draw test	A smoke pellet checks the flue is drawing correctly and that there are no leaks or blockages.	5 mins
Certificate issued	The sweep packs away, talks you through anything found and issues your Certificate of Sweeping.	5 mins

Is it a messy job?

It should not be. A professional seals the fireplace before brushing and runs a HEPA vacuum to capture fine dust. Sheets are lifted carefully and the hearth left as clean as it was found. A sweep working without sheets or a vacuum is a warning sign.

How to prepare for your sweep

Clear the hearth, move ornaments and anything fragile away from the fireplace, and pull back rugs and furniture. Do not light the fire for at least 24 hours beforehand so the flue is properly cold. Ensure clear access and, ideally, somewhere to park nearby.