You can handle a lot of chimney care yourself — burning dry wood, visual checks, and keeping alarms working — but sweeping the flue, inspections, and any liner, masonry, roof, or gas work should go to a professional. Here’s the honest line between safe DIY and the jobs that need a pro, from a 28-year chimney technician.
What you can safely do yourself
- Burn only seasoned, dry wood — dried at least six months to about 20% moisture. It’s the single biggest thing you control, and it dramatically cuts creosote.
- Build smaller, hotter fires rather than large, smoldering ones — they burn cleaner and leave less creosote.
- Use a screen or glass doors and keep the hearth area clear of anything flammable.
- Do a visual check from the firebox: look for obvious cracks, heavy soot flakes, a damper that won’t move freely, or debris falling down.
- Dispose of ashes safely — let them cool fully, then store in a metal container away from the house.
- Keep smoke and carbon monoxide alarms working near the fireplace and bedrooms, and test them regularly.
What to leave to a professional
- Sweeping the flue — proper creosote removal needs the right tools and safe access, and heavy glazed creosote can’t be cleared with a store-bought log.
- Inspections — a real inspection means getting onto the roof or a camera down the flue to see what you can’t from the ground. The CSIA recommends one every year.
- Liner, crown, and masonry work — cracked liners and failing masonry are safety issues that need expert repair.
- Roof and crown access — falls are a real risk; let someone equipped and insured do the high work.
- Anything involving gas — gas fireplace service and gas valve work should always go to a pro.
Never DIY an emergency
If you have an active chimney fire, a carbon monoxide alarm, or a gas smell, don’t try to handle it yourself — get everyone out and call 911 or your gas utility first. See our emergency guide.
Want a deeper routine? See our season-by-season maintenance guide.
Frequently asked questions
What chimney maintenance can I safely do myself?
You can burn only seasoned, dry wood, use a screen or glass doors, keep the hearth area clear, do a visual check for obvious problems, dispose of ashes safely in a metal container, and keep working smoke and carbon monoxide alarms nearby. These habits prevent most problems.
What chimney jobs should I never DIY?
Leave sweeping the flue, inspections, any liner or masonry work, roof and crown work, and anything involving gas to a professional. These require safe roof or flue access and the training to judge what you find, and getting them wrong is dangerous.
How can I tell if my firewood is dry enough?
Seasoned wood has been dried at least six months to around 20% moisture. It’s lighter, has cracks in the end grain, and sounds hollow when two pieces are knocked together. Wet or green wood hisses and smolders, and it coats your flue with creosote.
Can I inspect my own chimney?
You can do a visual check from the ground and firebox — looking for obvious cracks, soot flakes, a stuck damper, or debris — but a real inspection means getting onto the roof or a camera into the flue safely. That part should go to a pro, ideally once a year.
Is it safe to clean my chimney with a chimney-sweeping log?
Creosote-sweeping logs can loosen some buildup, but they are not a substitute for a professional sweep and inspection. They can’t remove heavy glazed creosote or tell you whether your flue and liner are actually safe. Use them as a supplement at most, not a replacement.
What should I check before the first fire of the season?
Confirm the damper opens and closes freely, make sure firewood is dry, clear anything stored near the hearth, and test your smoke and CO alarms. Then book a professional sweep and inspection if it’s been a year — a flue that sat idle can hide debris or nests.
How do I keep creosote from building up?
Burn dry, seasoned wood in smaller, hotter fires rather than large smoldering ones, and make sure the fire gets enough air. Hot, efficient fires leave far less creosote than slow, smoky ones. Regular professional sweeping handles the rest.
Why not just DIY everything to save money?
Because the riskiest chimney jobs — roof work, flue sweeping, liner and gas work — are exactly where a mistake causes a fire, a fall, or a carbon monoxide leak. Doing the safe parts yourself and leaving the rest to an insured pro is the smart, and often cheaper, approach.
Leave the hard part to us
You do the easy, safe parts — we’ll handle the sweep, inspection, and anything up on the roof. 7 days a week.
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Published November 10, 2026 · Written and reviewed by Joseph Ino, Founder & Master Chimney Technician, Chimney Sweep Squad