Chimney crown vs. chimney cap: what each one does

Purpose of a Chimney Crown

The chimney crown is the slab that covers the top of your chimney. It is usually made of concrete and designed to protect the bricks and mortar of the chimney from weather-related damage.

A well-constructed chimney crown will slope to direct water away from the chimney, preventing water damage and deterioration of the masonry. Regular maintenance of the crown is crucial to ensure it remains effective.

Role of a Chimney Cap

A chimney cap sits atop the chimney crown and serves multiple functions. It prevents rain, snow, and debris from entering the chimney. Additionally, most caps have a built-in screen to keep out animals.

Chimney caps help improve draft, reduce downdrafts, and prevent sparks from exiting the chimney which can be a fire hazard. They are an essential addition for maintaining the integrity of your chimney and ensuring safety.

Comparing Crowns and Caps

While both are integral to maintaining a chimney's health, they work together to ensure safety and longevity. The crown protects the structural elements, while the cap acts as a barrier to external elements.

Both should be inspected regularly for wear and tear. Visible cracks or damages to the crown or cap should be repaired promptly to avoid more significant issues down the line.