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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 » Fireplace Repair » Fireplace Masonry Repair
Service · A1 Chimney & Roofing
Fireplace masonry repair rebuilds the firebrick and mortar in the firebox and the masonry surround. It is the fireplace box, not the chimney above the roof.

The work
Firebrick is a different brick from the exterior chimney brick. It takes direct flame. When it cracks or the joints burn out, heat and gases can reach the masonry behind it. The repair cuts out the failed firebrick and resets new units, and repacks joints that have opened.
If the damage is the brick stack outside, that is chimney masonry repair. The smoke chamber just above the damper is smoke chamber repair.
Why it matters
A firebox with missing mortar or loose firebrick is no longer containing the fire. Heat then moves into places that were not built to take flame. That is the reason the firebox is repaired before another season of fires.
The surround and the hearth are checked for cracks that line up with the firebox, because those cracks sometimes show that the box has moved.
What to expect
The loose or burned masonry is marked, the repair is explained, and the price is set before any firebrick comes out.
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 firebrick is cracked or mortar is falling into the grate, call (855) 8-CALL-A1 or send a photo for a free estimate.
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