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Anatomy

Crown

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

All glossary terms

What is Crown?

The poured concrete or stone slab covering the top course of your masonry chimney (different from the metal chimney cap). Sheds water away from the masonry below. Cracks in the crown let water into the masonry — accelerated freeze-thaw spalling follows. Crown coat sealing fixes hairline cracks; full rebuild is for serious damage.

Related terms:Chimney CapSpallingCrownCoat

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