Firebrick and joint repair in O'Neil
Upfront pricing on O'Neil firebox repair once a free inspection has marked every failed brick and joint.
- Fully licensed and insured
- Locally owned
- Family owned and operated
- Same-day service
Get Your Free Inspection
Get a quote for chimney and fireplace repair and installation in Jacksonville.
Request received
Thank you. We will call you shortly to set a time.
Quicker by phone? Call (904) 920-5495
Local firebox pros who price wall by wall
- Locally owned in Jacksonville
- Family owned and operated
- 100% satisfaction guaranteed
- Free inspection and estimate
- Same-day service available
- 10% off any service
Firebrick joints are refilled with ASTM C199 medium-duty refractory mortar, the class the Florida code names.
- Free inspection and estimateEvery wall of the firebox in O'Neil is tapped and probed cold, and the failed bricks and joints are marked at no charge.
- Upfront pricing, no hidden feesEach wall is quoted for what it needs, a few joints, a few bricks or a full reline, so a small repair stays small.
- 100% satisfaction guaranteedIf a joint we repointed opens again after it has cured and been used as the ticket says, we come back and redo it.
One brick with a crack across it
A single firebrick with a crack running across its face raises a fair question: replace it, or leave it? The answer depends on whether the brick is still full thickness, still tight in its joints and still flat with its neighbors. A hairline in a sound brick is written down as something to watch rather than a repair.
A crack that has opened, rocks under a tap or lets a piece shift gets that one brick cut out and replaced in refractory mortar, and nothing around it is disturbed. Wondering about one cracked brick in your O'Neil firebox? Our number is (904) 920-5495.
The county for O'Neil is Nassau County. The coast is close to O'Neil.
What firebox repair covers in O'Neil
- Cracked firebrick replaced to size, one brick at a time
- Failed patches removed and the joints redone
- Gaps along the base of the walls repointed
- A written cure date for your O'Neil fireplace
Tap, probe, repair, cure
-
Keep the firebox cold
Let the fireplace go unused for several hours ahead of our visit, so each wall is cool to the touch.
-
Tap, probe and mark
Each brick is sounded, each joint probed, and the failed ones marked and written up by wall.
-
Rake, rebrick or reline
Joints are raked and repointed, failed bricks replaced and worn walls relined in C199 mortar.
-
Cure date on the ticket
The mortar maker's drying time sets the date of the first small fire, written down before we leave.
Rust streaks on firebrick in O'Neil
Streaks of rust running down the back wall come from a steel part above it that is wet and corroding. Near the coast, as in O'Neil, salt helps that along.
We clean the streaks where we repair and name the part that caused them.
10% off any service booked within 72 hours of inspection
Book firebox repointing or rebricking in O'Neil within 72 hours of the inspection and 10% comes off.
Doors, inlets and a hotter firebox
Fireplace doors closed during a fire, or an outside air inlet blowing fast into the firebox, can raise the temperature inside it. The Brick Industry Association warns that higher temperatures of that kind can warp grates and lead to early breakdown of the firebox mortar joints.
When a lining shows wear out of step with its age, we look at how the fireplace is run as well as at the brick. The repair still uses the same firebrick and mortar, but the estimate notes the likely cause so the new joints are not lost the same way. Opening the doors during a fire, or partly closing an inlet, are the usual changes to talk through.
Factory-built fireplaces are another repair
Molded refractory panels in a metal body mark a factory-built fireplace, a unit tested and listed with its own chimney pipe. Those panels are replaced with the replacement panels listed for that model, not with laid firebrick and mortar.
The quickest way to tell the two apart is the rating plate, which a factory-built unit carries and a masonry firebox does not. When the fireplace proves to be factory-built, the work is written up as prefab fireplace repair, a separate service with its own parts list, and the masonry firebox rules on this page do not apply to it.
Where the firebox ends and the smoke chamber begins
Over the throat, the smoke chamber narrows toward the flue, and the code (R1001.8) wants its inner surface parged smooth with ASTM C199 refractory mortar, the same class used in the firebox joints, but it is a separate part of the fireplace and a separate repair.
During a firebox repair we look up through the damper with a light. When parging is missing or the chamber walls are rough or open, it goes on the estimate as smoke chamber repair, a line you can schedule with the firebox or later. Doing both on one visit saves setting up twice, but the choice is yours.
Walls, joints and cure time in writing
- Each firebox wall and the floor tapped, probed and marked in chalk
- Joint widths checked against the quarter-inch limit in R1001.5
- Cure time from the mortar maker's data written on the ticket
- Floor firebricks lifted, rebedded and reset flat
Firebox repair questions from O'Neil
Is refractory caulk good enough for firebox joints?
Not for every joint. Florida's code wants firebrick laid in C199 medium-duty refractory mortar, with joints kept to a quarter inch. We read the product's stated standard and joint range before using it.
Do you do firebox rebuilds as well as repairs?
Yes, where the backing masonry itself has failed as well as the firebrick. The rebuild keeps the code's wall thickness, the firebox depth and the throat height, and the estimate explains why a rebuild is needed.
More services in O'Neil
-
-
-
-
-
-
Firebox trouble, free check
The firebox in your O'Neil fireplace is checked by our family crew at no charge, wall by wall.
Free Inspection