Crown

The concrete cap at the very top of a masonry chimney.

What is Crown?

Capping the top course of a masonry chimney is a slab of poured concrete or stone, a different element from the metal chimney cap. Its job is shedding water away from the masonry below, so cracks in the crown let water in and accelerated freeze-thaw spalling follows. Hairline cracks respond to crown coat sealing, while serious damage calls for a full rebuild.

Related terms:Chimney CapSpallingCrownCoat

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Other terms in the glossary

Creosote

Tar-like residue from incomplete wood combustion. Highly flammable.

NFPA 211

The US standard governing how chimneys, fireplaces, and vent systems are installed.

Inspection Levels

Level 1 covers the annual look; Level 2 is triggered by a sale or an event; Level 3 opens up concealed damage.

Flue

The inner passage that draws combustion gases up and out of the room.

Liner

The channel running inside the flue — clay tile, stainless steel, or cast-in-place.

Chimney Cap

The metal cover-and-mesh assembly on top of the flue.

10+

Years

NFPA 211

Compliant

CSIA

Certified

< 2hr

Response

Ready when you are

Talk to a CSIA-certified expert today.

Free written quote. Same-week scheduling. 24/7 emergency response when you need it.

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Licensed & Insured Same-Week Scheduling Written Quote, Always

Emergency

24/7 Response

Active leak, animal in flue, post-fire damage, or smoke event? Real humans on the line 7 AM to 12 AM every day — replies in under 2 minutes. Tech dispatch within 2 hours during business hours, subject to crew availability after-hours.

Emergency line

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