A chimney looks simple from the outside, but most of what goes wrong with one happens where you cannot see it: inside the flue, behind the liner, in the smoke chamber above the damper. A professional chimney inspection is how you find out what is going on in there before it turns into a fire, a leak or a repair bill. Here is what an inspection does, what the different levels mean, and when you need one.
Why a Chimney Inspection Matters
It finds fire hazards
Creosote is the tar-like residue wood smoke leaves inside the flue, and it burns. Nests, leaves and debris are just as dangerous. An inspection shows how much buildup there is and whether the chimney needs cleaning before you use it.
It protects the air in your home
A blocked flue or a cracked liner can let smoke and carbon monoxide into the house instead of out of it. Inspectors check that the system is venting the way it should.
It catches damage while it is still small
A hairline crack in the crown, loose flashing or soft mortar is a small repair. The same problems left for a few seasons can mean water damage inside the house or rebuilding the top of the chimney. See common chimney repairs.
The Three Levels of Chimney Inspection
The national fire code for chimneys, NFPA 211, defines three levels of inspection. Knowing which one you need saves time and money.
Level 1
A check of the readily accessible parts of the chimney, fireplace and connection. This is the standard yearly inspection for a chimney that has not changed and is being used the same way.
Level 2
Everything in Level 1, plus accessible areas such as attics and crawl spaces, and a video scan of the inside of the flue. A Level 2 is called for when you buy or sell a home, after a chimney fire or severe storm, after an earthquake or other event that could damage the structure, or when you change the type of fuel or appliance (for example, adding a gas insert).
Level 3
Used when a Level 1 or 2 finds a serious hidden problem that can only be confirmed by removing part of the structure or a wall. It is rare and only done when the earlier levels point to it.
What an Inspector Looks At
- Flue and liner: cracks, gaps, missing tiles, creosote and blockages
- Smoke chamber and smoke shelf: buildup and damage above the damper
- Damper: opens, closes and seals properly
- Firebox: cracked firebrick and failing mortar joints
- Crown and cap: cracks, rust and gaps where water or animals get in
- Flashing: the seal where the chimney meets the roof
- Masonry: spalling brick, worn mortar and signs of water
- Clearances: enough distance between the chimney and anything that can burn
After the inspection you should get a clear explanation of what was found, photos or video where it helps, and what needs to be fixed now versus what can wait.
When to Schedule an Inspection
- Once a year, ideally in early fall before you start using the fireplace
- Before you buy or sell a home with a fireplace
- Before using a fireplace that has sat unused for a long time
- After a chimney fire, a hailstorm or strong winds
- When you notice smoke in the room, water stains, a strong smell or sounds in the flue
- Before converting from wood to gas or installing an insert
Getting ready for the season? Use our winter chimney checklist.
Inspection vs. Cleaning
An inspection tells you the condition of the chimney. A cleaning removes the soot and creosote. They are often done on the same visit, but they are not the same thing. A chimney can be clean and still have a cracked liner, or look fine from the firebox and still have a nest at the top. Read what is included in a professional chimney cleaning.
Frequently Asked Questions
How long does a chimney inspection take?
A standard inspection usually takes under an hour. A Level 2 with a video scan takes longer.
Do I need an inspection if I rarely use my fireplace?
Yes. Less use means less creosote, but more time for animals, water and debris to cause problems no one notices.
Does a gas fireplace need an inspection?
Yes. The venting can be blocked, and the burner, logs and connections should be checked every year.
Is a home inspection the same as a chimney inspection?
Usually not. A general home inspector looks at the chimney from the outside and the firebox. A Level 2 chimney inspection includes a video scan of the flue, which is where most hidden problems are.
Book Your Chimney Inspection
SafeAir Duct & Chimney is a family owned, licensed and insured business, and our technicians are background checked. We inspect chimneys and fireplaces in Dallas, Plano, Frisco, McKinney, Allen, Richardson, Garland, Rowlett, Irving, Grapevine, Arlington and Fort Worth. See our chimney inspection and fireplace inspection services.
Book your chimney inspection online or call us at (214) 550-3348.
