Chimney and Fireplace Inspection: 4 Checks Before Burning Season

TL;DR: A dirty chimney is one of the most overlooked fire risks in a home. Here's what to check before you light the first fire.

_Last reviewed: July 2026 · 2 min read_

A neglected chimney is a serious, overlooked fire risk — creosote buildup is exactly what causes chimney fires. Before burning season, four checks make your fireplace safe: look for creosote, test the damper, inspect the cap, and clear the hearth. When in doubt, a certified sweep is worth every penny.

What is creosote and why does it matter?

Creosote is the flaky, tarry residue that wood smoke leaves inside the flue — and it's highly flammable. When enough builds up, a hot fire can ignite it into a chimney fire. Check for buildup before the season; if you see a thick or glazed layer, don't burn until it's professionally swept.

How do I test the damper?

The damper opens to let smoke out and closes to keep heat in when the fireplace is cold. Make sure it opens and closes fully and smoothly — a stuck-shut damper fills the room with smoke; a stuck-open one wastes heat all winter. Free it up or have it repaired before lighting a fire.

Why inspect the chimney cap and screen?

The cap and screen on top keep out rain, animals, and debris, and stop sparks from escaping onto the roof. From the ground (or with a pro), check that the cap is intact and the screen isn't blocked by a nest or leaves. A missing cap lets water in, which damages the flue.

What should I keep clear around the fireplace?

Keep rugs, furniture, and anything flammable well back from the hearth — sparks and embers pop out. Maintain a clear non-combustible zone in front, and use a screen or glass doors. It's basic fire safety that prevents the most common accidents.

Schedule the yearly sweep

Logging your last inspection and sweep keeps you on a safe schedule. Okoniq Property Hub keeps it with your home maintenance records in one private place in your browser.

Frequently asked questions

How often should a chimney be cleaned?

Industry guidance is an inspection every year and cleaning as needed — generally after about every cord of wood burned, or whenever creosote builds up noticeably.

Can I clean my own chimney?

Light maintenance yes, but a certified chimney sweep should inspect and clean it, especially to assess creosote and the flue's condition safely.

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FAQ

What are the warning signs of a chimney fire?

A chimney fire may sound like a roaring freight train or produce dense smoke and flames shooting from the top of the chimney. You may also notice a strong, hot smell or see pieces of burning creosote falling into the firebox.

How much does a professional chimney sweep cost?

A standard chimney inspection and cleaning typically costs between $150 and $350, depending on your region, chimney height, and the amount of creosote buildup requiring removal.

Can I use my fireplace if the damper is stuck open?

Yes, but you'll lose significant heat up the chimney when the fireplace isn't in use, driving up heating bills all winter. It's worth repairing before the season starts.

What happens if I burn a fire with creosote buildup?

Thick creosote can ignite at high temperatures, causing a chimney fire that can crack the flue liner, spread to the roof structure, or fill the home with dangerous smoke and flames.