Chimney crown repair in Middleburg by local masons

Coat it or recast it? A free crown inspection tells Middleburg homeowners which one their crown needs, and why.

Fully licensed and insured
Locally owned
Family owned and operated
Same-day service

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(904) 920-5495 Free Inspection

Chimney crown pros who check before they seal or recast

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

Hairline cracks on a sound slab get sealed, which keeps the job smaller and the price lower.

Free inspection and estimateWe map the cracks on your Middleburg 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

Why crowns crack at the flue corners

Cracks that start at the corners of the flue tile and run outward to the edge of the crown tell a specific story. The tile heats, grows and pushes against the crown, and a crown with no bond break has nowhere to relieve that push but through the concrete.

Sealing those cracks on your Middleburg crown without dealing with the joint at the tile leaves the cause in place. The repair either opens a proper bond break around the tile or, if the crown is too far gone, replaces the crown with the bond break built in. Cracks on top of your Middleburg chimney? Our masons inspect crowns for free, so call (904) 920-5495.

Middleburg does not reach the coast. Middleburg lies within Clay County.

Crown work from crack map to cure

Cracks mapped and measured before any repair is chosen
Wider cracks filled before a crown coating goes on
Drip groove cast under the overhang
Fresh concrete kept damp and covered while it cures

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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.

The yearly crown check in Middleburg

NFPA 211 calls for a yearly chimney inspection, and the crown gets a close look each time. New cracks and cracks that have widened are measured against the last visit.

Caught early on a chimney in Middleburg, most crown cracks still take a coating.

10% off any service booked within 72 hours of inspection

Tell us you want the discount when you call about the crown, and we note it on the booking.

Call (904) 920-5495 Free Inspection

Mapping the cracks before choosing a repair

Before we propose anything, the cracks on a crown are mapped: where each one starts, where it runs, and how wide it is along its length. A sketch shows them. The pattern matters as much for the diagnosis as the width does.

Cracks radiating from the flue corners point to the tile pushing on the crown. A crack running parallel to an edge, a short way in, points to a feathered edge breaking off. A web of fine cracks across the whole surface points to shrinkage in the original pour. Each pattern leads to a different repair, which is why the map comes first.

Taking a failed crown down to sound masonry

Removing a crown is careful demolition on a roof. The old concrete or mortar is broken out in manageable pieces with hand tools or a small breaker, lowered in buckets or bags, and kept out of the flue with a cover over the tile.

The goal is to reach sound masonry: brick that is firm, mortar that is hard. Where the top courses are loose or soft, removal continues down through them, and they are relaid before the new crown is formed. How far down we expect to go, and how that changes if the brick is worse than it looks, is agreed before the first piece comes off.

A flashing sheet under the crown

The Brick Industry Association's details put a sheet of flashing directly under a cast crown, running past the inside of the brick and turned up against the flue tile. The flashing catches any water that gets through the crown and sends it out as a drip beyond the face.

Technical Note 19B highly recommends flashing under cast-in-place caps and notes that it can double as the bond break between crown and brick. We include it where the chimney's construction allows it, and we say whether your crown gets one and why. The flashing metal is chosen to sit in mortar without corroding.

Coat or recast, and the reasons

Coating product class and the data sheet's weather window
Overhang, drip groove and slope for the new crown
Cure time before the cap goes back and the fireplace is used
Debris removal from the roof and gutters after the work

Crown repair questions from Middleburg

Can I tell from the ground whether my crown is a mortar wash?

Sometimes. A thin gray layer that tapers to the edge with no overhang is likely a wash, while a thicker slab that projects past the brick is likely a cast crown. We confirm it from the roof.

Can a drip edge be added to my existing crown?

Not in a way that lasts. A drip edge has to be formed into the underside of an overhang, and a crown without an overhang has nowhere to put one. The fix is a new crown formed wider than the chimney.