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Usually the pilot, thermocouple or ignition. See common causes.
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Usually heat escaping through thin attic insulation.
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Home » Chimney Services » Chimney Repair » Chimney Flue Repair
Service · A1 Chimney & Roofing
The flue is the passage inside the chimney that carries smoke and gases out of the house. Chimney flue repair deals with cracks, open joints, or blockages in that passage.

The work
On a masonry chimney the flue may be clay tile, or it may be an older brick passage with no tile. Heat, a chimney fire, or settling can crack a tile or open a joint. Smoke and carbon monoxide can then leave the passage and enter the attic or a wall. The repair may be a tile replacement, a listed liner, or a rebuild of a short damaged section, depending on what the inspection finds.
A flue full of soot is a cleaning, not a repair. That work is a chimney sweep or, when the buildup is hardened, deep cleaning.
Why it matters
The flue is the part of the chimney that has to contain the fire’s gases. A crack you cannot see from the firebox is still a path into the house. This is why a flue problem is fixed, not painted over.
If anyone in the house feels sick, dizzy, or has a headache while the fireplace or furnace is running, get everyone outside and call emergency services before calling A1.
What to expect
The flue is inspected, the repair that fits the damage is explained, and the price is set before work starts. A cleaning is recommended instead when the passage is intact and only dirty.
A1 Chimney & Roofing is a nationwide team with its own licensed and insured technicians in 27 states. The price is explained before any work starts. Homeowners have left 25,719 Google reviews with a 5.0 rating.
How it works
Online in a minute, or call the 24/7 line. We confirm your local A1 technician and a time window.
Your technician checks the chimney and the roof around it, and photographs what they find.
You get the findings, the photos and a written price. Nothing starts until you say yes.
Drop cloths down, debris hauled away, before-and-after photos sent to you.
Reviews
“A1 Chimney is different. They truly care about your chimney and want to see you get the best use out of it.
They relined my chimney and did a great job. The technician was respectful and left the work area clean.
Book online
If the fireplace smokes, or you suspect the flue is cracked, call (855) 8-CALL-A1 or send the details for a free estimate.
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