Local chimney crown repair in O'Neil

Concrete chips on your O'Neil roof point back to the crown they came from. That is where our free inspection starts.

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Locally owned
Family owned and operated
Same-day service

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Crown repair experts for O'Neil chimneys

Locally owned in Jacksonville
Family owned and operated
100% satisfaction guaranteed
Free inspection and estimate
Same-day service available
10% off any service

Thin mortar washes are replaced with a real cast crown instead of being skimmed over.

Free inspection and estimateWe map the cracks on your O'Neil crown and check the brick under it at no charge.
Upfront pricing, no hidden feesCoating and recasting are both priced on paper, so you see the difference before choosing.
100% satisfaction guaranteedIf the finished crown is not right, tell us and we come back to put it right.

Call (904) 920-5495 Free Inspection

Hairline cracks in a sound crown

Fine cracks in a crown that is otherwise sound, with a proper shape and edges that still hold together, do not call for demolition. A flexible crown coating brushed over the whole top bridges those cracks and sheds water, and it costs far less effort than a recast.

In that case the O'Neil proposal is the coating, with the conditions its maker sets for applying it and what would move the repair up to a recast later: cracks that open further, loose pieces, or water already reaching the brick below. The crack map stays on file for comparison. We check the cap and flashing on the same free trip to your O'Neil crown; call (904) 920-5495.

O'Neil lies within Nassau County. The coast is close to O'Neil.

What our crown work covers in O'Neil

Cracks mapped and measured before any repair is chosen
Wider cracks filled before a crown coating goes on
Reinforcement placed inside the slab to control cracking
Coat or recast decision for your O'Neil crown in writing

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Map, prep, coat or pour, cure

Crack map from the roof
We identify the type of top and sketch each crack with its width, so the choice between coating and recasting is based on what is there.
Prep for coating or removal
A sound crown is cleaned and its wider cracks filled; a failed one is broken out down to sound brick.
Coat, or form and pour
The coating is brushed on in dry weather, or new concrete goes into forms with an overhang, a drip groove and reinforcement.
Cure, seal and refit the cap
The bond break at each flue is sealed, the concrete cures under cover, and the cap goes back on.

Crown repair near the coast

O'Neil is near the coast. Salt carried inland on the wind still settles on crowns there, and it speeds up rust on any steel close to the surface of the concrete.

A crown we cast in O'Neil has its reinforcement set well inside the slab, and the sealed bond break at each flue keeps water out of the joint.

10% off any service booked within 72 hours of inspection

Seal or recast, crown repair in O'Neil earns the 10% discount.

Call (904) 920-5495 Free Inspection

What goes into the bond break at the flue

The bond break is the flexible joint between the crown and each flue tile. It lets the tile grow with heat without pushing on the concrete. The code calls for it to be caulked, following ASTM C1283, and the BIA detail shows a backer rod with sealant over it.

In practice we wrap the tile with a compressible material before the concrete is placed, then rake the top back and fill it with a primed backer and a sealant suited to heat and weather. The finished joint stays flexible. A crown poured tight against the tile, with no gap at all, is the fault this detail exists to prevent.

Crowns around a stainless liner top plate

After a flue is relined with a stainless steel liner, a top plate sits on the crown and the liner passes through it. The plate is sealed to the crown so water cannot run down between the old flue tile and the new liner.

Repairing the crown on a relined chimney means taking that plate off, repairing or recasting the crown, and resealing the plate to the finished surface with a sealant rated for the job. The liner itself is left undisturbed. If the plate is corroded or the seal has failed repeatedly, that becomes a separate line.

Reinforcing steel in crowns near salt water

Close to the coast, chlorides from salt spray settle on a crown and work into the concrete. When they reach ordinary reinforcing steel, the steel rusts, and rust takes up more room than the steel it came from. The expansion splits the crown from inside, along the line of the bars.

For crowns in this band we keep reinforcement well inside the concrete, choose a dense mix, and consider reinforcement that does not rust where the design allows it. The concrete code, ACI 318, treats chloride exposure as its own durability category, and we build the crown with that exposure in mind.

Coat or recast, and the reasons

Repair method chosen, coating, patch or recast, with the reason
Reinforcement and concrete mix for a cast crown
Flue tile height above the finished crown
Debris removal from the roof and gutters after the work

Crown repair questions from O'Neil

Is O'Neil inside your crown repair area?

It is. On your O'Neil chimney we first identify the type of top and map its cracks, then put a coating or a recast in writing. Call (904) 920-5495 to book.

When does a crown coating need to be redone?

The coating maker's data sheet gives the guidance, and the yearly check tells us in practice. A coating that has stayed flexible and firmly attached can be left; one that has cracked or peeled is cleaned off and renewed.