Hairline cracks in a solid crown
Chimney crown sealing with a flexible sealer
Look again in a year.
Chimney Crown Repair in Spring Hill, FL
A sound top on the chimney, so rain runs off and not in.
- Available for same-day service
- Fully licensed and insured
- Family owned and run
- Locally owned and operated
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10% Off Work Booked in the 72 Hours After Your Inspection
Book crown work within 72 hours of your free inspection and take 10% off.
Why Homeowners Choose Our Crew
A chimney crown is the concrete or mortar slab that caps the top of a masonry chimney around the flue. Crown repair in Spring Hill seals hairline cracks with a flexible crown sealer, while a crown that is broken or sloped wrong is rebuilt with a drip edge and a gap around the flue tile.
What the Chimney Crown Does
The chimney crown covers the top of the brick around the flue tile, slopes away from the flue so water runs off, and overhangs the sides with a drip edge so the runoff falls clear of the brick face. On many older chimneys the crown is only a thin wash of mortar troweled over the top bricks, which cracks and crumbles far sooner than a properly cast crown.
Because the crown sits in full sun, it heats and cools every day. Concrete that is too thin, poured tight against the flue tile or mixed with ordinary mortar cracks under that movement, and every crack sends rain into the chimney.
Sealing, Coating or Rebuilding
Chimney crown sealing fills hairline cracks with a flexible sealer that moves with the concrete. Chimney crown coating spreads an elastomeric layer across the whole surface for a crown that is sound but weathered. Both are good, quick fixes when the slab underneath is solid.
Cracked chimney crown repair stops being a coating job when the crack runs through the slab, pieces are loose, or the crown was a mortar smear to begin with. Then a chimney crown rebuild is the lasting answer: we remove the old top, form a new crown with a proper slope and overhang, and leave an expansion gap at the flue that gets a flexible seal.
Building a Crown That Lasts
The Florida Building Code, Residential, section R1003, sets out how a masonry chimney is capped. A sound chimney crown replacement uses a concrete mix made for the job rather than bricklaying mortar, sheds water on all sides and does not bond rigidly to the flue tile. Mortar crown repair with a patch of the same weak mix rarely lasts more than a season or two.
With the crown off, we also see the top courses of brick and the flue tile, which lets us catch loose brick or a cracked tile while the chimney is already open.
Questions and Answers
Can a cracked chimney crown be repaired?
Hairline cracks in a solid crown can be sealed with a flexible crown sealer or coating. Once a crack runs through the slab or pieces come loose, rebuilding the crown is the lasting repair. The choice depends on the slab under the cracks, which we check from the roof.
What is the best material for a chimney crown?
A cast concrete crown with an overhang and a drip edge holds up far better than bricklaying mortar spread over the top. It should slope away from the flue and leave a small gap at the flue tile, filled with a flexible sealant, so heat movement does not crack it.
Is a chimney crown the same as a chimney cap?
No. The crown is the concrete slab that covers the top of the brick around the flue. The cap is the metal hood and screen that sits over the flue opening itself. A chimney needs both. The crown keeps water out of the brick, and the cap keeps it out of the flue.
How long does a chimney crown last?
A properly cast concrete crown with a drip edge can last for decades, while a thin mortar wash may crack within a few years. Florida sun and heavy rain wear on both. Sealing small cracks early and keeping a cap on the flue add years to either.
How do you seal a chimney crown?
First the crown is cleaned and any loose concrete removed. Then a flexible crown sealer is worked into the hairline cracks, and a coating is brushed across the whole surface and over the edges. The gap at the flue tile gets its own flexible sealant so heat movement does not reopen it.
Why does a chimney crown crack?
Crowns crack because they heat and cool every day in full sun, and thin or weak ones cannot take the movement. A crown poured tight against the flue tile cracks as the tile expands. Bricklaying mortar used in place of a concrete mix and a missing overhang make it worse.
What the Written Estimate Covers
Repair Options
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- 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.
Signs It Is Time
The crown is the slab across the top of a masonry chimney, and it takes more sun and rain than any other part of the house. When it cracks, water goes straight into the brick below. Our crew seals small cracks, coats a tired crown, or forms and pours a new one when the old slab has broken through.
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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
Put a Sound Top Back on Your Chimney
Sealed or rebuilt, with a drip edge that sheds the rain.