Chimney crown vs. chimney cap: what each one does

What is a Chimney Crown?

A chimney crown is a slab, often made of cement, that covers the top of your chimney. It serves as a cap to keep water out of the structure beneath it. The crown is designed to direct water away from the flue edges to avoid erosion of brick and mortar joints.

If a chimney crown is cracked or improperly built, it can allow water to seep into the chimney, leading to costly repairs. Regular inspections are crucial to ensure that the crown is intact and functioning properly.

Role of a Chimney Cap

A chimney cap is a metal cover that fits over the top of the chimney flue. It serves several purposes: preventing debris, animals, and rain from entering the chimney, and helping to reduce downdrafts. Chimney caps often come with mesh siding to block out pests.

While both the crown and cap are protective elements, the cap is more focused on sealing off the flue itself, adding an additional layer of protection against the elements. Choosing a quality chimney cap can help extend the life of your chimney significantly.

Maintenance and Repairs

Both chimney crowns and caps require regular maintenance to ensure they are effective. Inspections can catch early signs of wear or damage, such as cracks in the crown which might cause leaks, or rust in the cap that could reduce its efficiency.

Homeowners should consider annual inspections and cleanings as a part of their chimney maintenance routine. Keeping these elements in good condition can help avoid more costly repairs in the future.