Warning signs
- Gaps in mortar joints deeper than 1/4 inch
- Loose or missing firebrick
- Cracks wider than a credit card
- Smoke entering the room
Repair options
Tuckpointing with refractory mortar, replacing individual firebricks, or rebuilding the entire firebox.
Frequently asked questions
How often should a fireplace be inspected?
Annually, per NFPA 211 guidance.
Can I repair firebrick myself?
Minor joint repair is possible; replacement is best left to a mason.
What's a smoke chamber?
The area above the damper; rough ones should be parged smooth.
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