The Purpose of a Chimney Crown
A chimney crown sits on top of the chimney and is usually made of concrete. Its primary role is to direct water away from the chimney to prevent water damage and deterioration of masonry.
It acts like a roof for the chimney, helping to protect the masonry and flue from rain, snow, and ice. Properly constructed crowns are slightly sloped to encourage water runoff and minimize absorption.
Function of a Chimney Cap
A chimney cap is a metal cover that sits on top of the chimney crown. It prevents rain and debris from entering the chimney flue, protecting the interior from water damage and blockage.
Chimney caps often include a wire mesh, which acts as a barrier against animals like birds and squirrels that might try to nest inside your chimney. It can also help prevent downdrafts that bring smoke back into the living area.
Maintenance of Crowns and Caps
Regular inspections and timely repairs of the chimney crown can prevent cracks and deteriorations, which can lead to leaks and costly repairs over time.
Chimney caps should be checked for rust, corrosion, or damage after severe storms to ensure they continue to function effectively in protecting the chimney system.