Chimney Inspection: Levels, How Often and What Is Checked
Chimney inspection explained: the three levels, how often you need one, what the inspector checks and the warning signs of creosote, leaks and cracked flues.
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A chimney inspection checks the chimney, flue liner, cap, crown, flashing and fireplace or stove for fire, carbon monoxide and water risks. Safety standards advise at least one inspection a year for any chimney in use, plus an inspection after a chimney fire, storm damage or a change in fuel or appliance, and before you buy a house.
Chimney inspection: the three levels
Inspections come in levels. The right one depends on why you need it. A qualified inspector will explain which level fits your situation.
| Quick facts: chimney inspection | |
|---|---|
| How often | At least once a year for chimneys in regular use |
| Level 1 | Visual check of accessible parts, for chimneys in routine use with no changes |
| Level 2 | Adds a camera scan of the flue and attic or crawl space; needed after changes, sale or damage |
| Level 3 | Involves removing parts of the chimney to reach hidden hazards |
Which level when
| Situation | Typical level |
|---|---|
| Yearly check, no changes | Level 1 |
| Buying or selling a home | Level 2 |
| After a chimney fire, earthquake or strong storm | Level 2 or 3 |
| New stove or insert, or a change of fuel | Level 2 |
| A hidden hazard is suspected | Level 3 |
What the inspector looks at
- Cap and crown. A cap keeps rain and animals out, and a cracked crown lets water into the masonry.
- Flashing. The seal where the chimney meets the roof must be tight, or leaks follow.
- Masonry. Crumbling mortar, spalled bricks and white staining suggest water damage.
- Flue liner. Cracks, gaps or missing sections let heat and gases into the walls.
- Damper and smoke chamber. They should open, close and be free of buildup.
- Creosote. This tar-like residue from burning wood can ignite. Inspectors rate how thick and hard it is.
- Firebox and hearth. Cracked firebrick or loose hearth parts are a risk.
- Clearances. Nearby wood and insulation must be far enough away.
Warning signs between inspections
Smoke coming into the room, a strong smoky or sooty smell, black flakes in the fireplace, rust on the damper, crumbling mortar, white powder on bricks, water stains near the chimney, animal noises or nests and a chimney that leans all call for a check. Carbon monoxide alarms that sound should always be taken seriously.
Inspection versus sweeping
A sweep cleans soot and creosote out of the flue. An inspection checks the condition and safety of the whole system. Many companies do both, but cleaning does not replace an inspection, and an inspection does not always include sweeping. Ask which service you are booking.
Choosing an inspector
Look for a certified chimney professional, ask what the inspection includes, whether a camera is used and whether you get a written report with photos. Be cautious about anyone who says repairs are urgent without showing you the problem.
Care between visits
Burn dry, seasoned firewood only. Keep the cap and crown in good shape. Use a chimney cap with a screen. Never burn trash or treated wood. Test smoke and carbon monoxide alarms monthly.
What a report should include
A good written report lists the level of inspection, what was checked, photos or camera footage of the flue, the condition of each part and any repairs advised, with the most urgent items first. It should also say whether the chimney is safe to use now. Keep the report with your home records, because buyers, insurers and later inspectors often ask for it.
Preparing for the visit
Clear the area around the fireplace, let the firebox cool if you used it recently, and tell the inspector about any smoke, smells or leaks you have noticed. Ask whether they need roof access, and make sure pets are out of the way. A little preparation shortens the chimney inspection and helps the inspector find the real problem.
When to call a professional
If you see warning signs, have never had the chimney checked or are about to use it after a long time, book an inspection. A chimney inspection protects your home and the people in it.
Chimney inspection: what a visit should include
A chimney inspection at the first level checks the parts you can see from the outside and the inside of the flue, with a visual look at the crown, flashing and chimney cap. A level two inspection adds a camera inside the flue to check for cracks, creosote build-up and blockages. Most homes with a change of fuel, a chimney fire or a home sale need the more thorough check.
Ask the inspector to explain what they found in plain language and to show you photographs. A good report lists each problem, its level of urgency, and what repair is recommended. A chimney inspection is only as useful as the notes that follow it, so keep the report with your home records.
Related reading
- Chimney Flashing Leak: How to Spot It and What Fixes It
- Roof Inspection After Storm: Safe Checks, Evidence and Next Steps
- Practical Guide: How to Find Where a Roof Is Leaking
- How to Fix a Leaking Skylight: Leak, Condensation or Flashing?
Browse all roofing guides, or find a roofer in your city from the roofing directory.
Frequently asked questions
What is a chimney inspection?
It is a check of the chimney, flue liner, cap, crown, flashing and firebox for fire, carbon monoxide and water risks. Levels range from a visual check to a camera scan to opening up hidden areas.
How often should I have a chimney inspection?
At least once a year for any chimney in regular use, and also after a chimney fire, storm damage or a change of appliance or fuel. Have one before buying a home that has a fireplace.
What is a Level 2 chimney inspection?
A Level 2 inspection adds a camera scan of the flue and a look at attic and crawl-space areas. It is usually needed when you buy a house, change a stove or insert, or after an event that may have damaged the chimney.
What is the difference between a chimney sweep and a chimney inspection?
A sweep removes soot and creosote from the flue, while an inspection checks the condition and safety of the whole system. Cleaning does not replace an inspection, so ask which service you are booking.
What does creosote do in a chimney?
Creosote is a tar-like residue left by burning wood. It builds up on flue walls and can ignite, causing a chimney fire. Burning dry, seasoned wood and having regular sweeping and inspections reduces the risk.
Do I need an inspection if I do not use my fireplace?
Yes, if you may ever use it, because animals, water and aging can damage an unused chimney. A check before first use after a long pause helps you avoid fire and carbon monoxide risks.
What are signs I need a chimney inspection now?
Smoke entering the room, a strong smoky smell, black flakes, rust, crumbling mortar, white staining, water leaks, animal nests or a leaning chimney. A sounding carbon monoxide alarm is also a reason to act at once.
Can a chimney leak be found during an inspection?
Yes. Inspectors check the cap, crown, flashing and masonry for places where water gets in, and look for stains and damage inside. Fixing small leaks early prevents rot, mold and costly repairs.
Who should do a chimney inspection?
Choose a certified chimney professional who uses a camera when needed and gives a written report with photos. Ask what level of inspection is included before you book. Ask about their insurance and for references from other homeowners too.
When should I call a professional about my chimney?
Call if you notice warning signs, have never had the chimney checked, plan to start using it after a long pause or have just bought the home. Schedule an annual chimney inspection as routine.
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