Chimney crown vs. chimney cap: what each one does
Learn the difference between a chimney crown and a chimney cap, and how each plays a role in protecting your home.
What is a Chimney Crown?
A chimney crown is the top part of your chimney, made of cement, stone, or metal, that seals the top edge around the flue. It helps to prevent water from entering the chimney and causing damage over time.
Properly designed crowns are slightly sloped to direct water away from the flue opening and over the chimney edges. This helps protect the mortar and bricks beneath from weathering caused by rain and snow.
Purpose of a Chimney Cap
A chimney cap sits atop the chimney crown and serves multiple protective roles. It prevents rain, snow, and small animals from entering the chimney, which helps maintain your chimney’s efficiency and integrity.
In addition to keeping out unwanted rainwater and critters, chimney caps often have mesh siding that acts as a spark arrestor, preventing sparks from leaving the chimney and igniting nearby flammable materials.
Maintenance Tips
Both the chimney crown and chimney cap should be inspected regularly for signs of wear and tear. Cracks or damage to the chimney crown can allow moisture in, leading to more significant problems down the line.
Regularly check your chimney cap for any blockages or damage. Replacing or repairing these components when issues arise is crucial in preventing costly repairs and ensuring your chimney continues to function safely.
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