Chimney crown vs. chimney cap: what each one does
Understand the difference between a chimney crown and a chimney cap and their roles in protecting your chimney.
2 min read
What is a Chimney Crown?
The chimney crown is a slab, usually made of concrete, that covers the top of the chimney. It acts as a barrier, sealing the chimney's top against water intrusion and helping to shed rainwater away from the flue.
A well-constructed crown extends past the chimney’s sides, preventing water from running down the exterior masonry, which can cause significant damage over time.
What is a Chimney Cap?
A chimney cap is a protective covering installed at the very top of the chimney. It serves multiple functions, including keeping rain out of the flue, preventing downdrafts, and stopping animals and debris from entering.
Made of materials like stainless steel or copper, chimney caps come with mesh sides that also help to contain sparks and embers, reducing fire risks.
Why Both are Important
While both the crown and cap serve to protect the chimney from water and external elements, they address different areas of concern. The cap keeps the flue entry safe, while the crown protects the entire top structure.
Ensuring both the crown and cap are in good condition is vital for extending the life of your chimney and preventing costly repairs due to water damage and debris accumulation.
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