Open joints, sound brick
Repoint with refractory mortar
Check the damper above while there.
Firebox Repair in Spring Hill, FL
A firebox lined with sound brick, ready for the next fire.
- Available for same-day service
- Fully licensed and insured
- Family owned and run
- Locally owned and operated
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Request Received
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10% Off Work Booked in the 72 Hours After Your Inspection
Book firebox repair within 72 hours of the free inspection for 10% off.
What You Can Count On
Firebox repair fixes the brick-lined box where the fire burns. Cracked or loose firebrick is replaced and burned-out joints are repointed with heat-rated refractory mortar. A badly damaged firebox is rebuilt. In a Florida home that lights only a few fires a year, damage can go unnoticed until the first cool night, so our Spring Hill crew checks it first.
What the Firebox Takes
The firebox is lined with firebrick, a dense brick made to take direct flame, set in refractory mortar that can handle the heat. Ordinary brick and mortar break down far faster there. Each fire heats the lining quickly and each cooldown shrinks it, so over time joints open and bricks crack.
Cracked firebox repair matters because the firebox protects the wall behind it. A gap in the lining lets heat reach masonry and framing that were never meant to see it.
Firebrick Repair and Replacement
Firebrick repair for open joints means raking out the burned mortar and repointing with refractory mortar. Fireplace firebrick replacement cuts out cracked or loose units and sets new firebrick in their place. Fireplace brick repair on the face of the fireplace, outside the firebox, uses ordinary mortar matched to the brick.
Fireplace mortar repair inside the firebox must use a refractory product. Patching with ordinary mortar or a household caulk fails within a few fires.
Firebox Rebuild
When the back wall bulges or most joints have failed, a firebox rebuild relays the lining from the floor up. A fireplace rebuild of that kind keeps the outside of the fireplace and the chimney as they are. In a factory-built fireplace, the lining is a set of refractory panels instead, covered on the prefab repair page.
Problems We Find and Fix
Repair Options
Parts and Materials
Request Your Free Spring Hill Inspection
Leave your details and we will call back to pick a time that suits you.
- Free inspection and a written estimate
- Same-day service available
- Family owned and run in Spring Hill
Request Received
Thanks, your request is with us. Expect a call from our Spring Hill family to book the free inspection.
What Affects the Price
Signs It Is Time
The firebox takes the direct heat of every fire, and over the years its brick cracks and its joints burn out. Gaps there let heat reach the walls behind the fireplace. Our crew replaces cracked firebrick, repoints joints with refractory mortar, and rebuilds the firebox when too much of it has failed.
Questions and Answers
Why are bricks falling out of my fireplace?
Bricks loosen when the refractory mortar around them has burned out after years of heat. Water coming down an uncapped flue speeds that up. A loose brick leaves a gap where heat can reach the wall behind, so the firebox should be repaired before the next fire.
What mortar is used inside a fireplace?
Inside the firebox, joints are filled with refractory mortar, a heat-rated product made for direct flame, because ordinary masonry mortar breaks down quickly there. On the fireplace face outside the firebox, a mortar matched to the brick is used instead, so the joints look the same as the rest of the wall.
Can fireplace bricks be replaced?
Cracked or loose firebrick can be cut out one at a time and replaced with new firebrick set in refractory mortar. When most of the lining has failed, the whole firebox is relaid instead. A factory-built fireplace uses refractory panels rather than loose brick. Those panels are ordered by the maker's model number.
Is a cracked firebox dangerous?
A small hairline crack in a firebrick is usually cosmetic and only needs watching. Wide cracks, gaps between bricks or a bulging back wall let heat reach the masonry and framing behind the firebox, so they should be repaired with firebrick and refractory mortar before the fireplace is used again.
Related Services
Proudly American
Run by a Spring Hill family: experienced hands, a written estimate before work starts and a workmanship warranty on our repairs.
Equipment Brands We Install and Service
Reline Your Firebox Before the Next Fire
Firebrick and refractory mortar, set right.