The chimney crown is the chimney crown jewel for any system. It may be just a slab of concrete, but it serves an important purpose. Recently, standing in line at the grocery store, a couple was discussing their recent chimney inspection. The couple found that the chimney crown had multiple cracks. Some cracks were hairline cracks while others had more pronounced gaps. Whether small or large, these cracks can cause water and snow melt to enter the chimney system and make its way into the home where it can cause damage.
The Chimney Crown Jewel
Yes, this is a play on words but does explain the importance of the chimney crown. The chimney crown is a large slab of cement that covers the top of the chimney and extends beyond all four sides of the chimney structure beneath. The purpose of the chimney crown is to:
- Protect the chimney from outside elements: The chimney crown protects the entrance of the chimney covering the space between the flue liner and the walls. It directs rain, snow and ice away from getting into the chimney top. If we didn’t have the chimney crown, water would begin to deteriorate the chimney.
- Slows Down the Deterioration: That’s why we call it the chimney crown jewel! The freeze thaw cycle, or the temperature swings like we’re experiencing, can cause the bricks to crack and flake (spalling). The chimney crown is a barrier of protection.
- Maintain the Integrity of the Structure: By protecting the brick and mortar from deterioration and damage, the chimney crown helps maintain the overall integrity of the chimney.
Is there a Difference Between a Crown and a Cap?
Sometimes, there’s some misunderstanding between the chimney crown and a chimney cap. That’s because both are providing protection to the entryway of the chimney, but each in their own way.
The chimney cap is a metal cover that sits over the flue opening in order to keep rain, snow, animals and debris from entering the chimney flue. By maintaining the security of the opening, damage to the interior of the home and chimney can be avoided.
The chimney crown is a cement slab that extends over the bricks providing direction for rain and snow to land and drip away from the chimney structure. It also will help control some of the deterioration of the brick and mortar. The chimney cap usually sits on top of the flue that comes out of the chimney crown.
Is there a Way to Protect the Chimney Crown Jewel?
Once homeowners understand the importance of the chimney cap, most would like to protect it from failing. Superior Chimney offers a crown coat, which is specifically formulated to withstand the weather elements. By applying this material, the chimney crown will be protected from chimney leaks which reduces repairs.
Contact us today to learn more about your chimney crown and how to protect it for the long term.
