Most commonly chimney crowns are made of poured concrete and free from cracks and crumbling.
Metal chimney crown.
Often used to cover chimney chase surrounds or brick masonry crowns it fits over the top of the chimney like a shoe box cover fits the top of a shoe box.
Generally made of metal they are installed just inside the chimney.
As crowns withstand a lot of abuse they need to be made out of a solid material.
Remove the squirrel.
There are also decorative models such as copper caps which are more costly but require less maintenance.
If your chimney has multiple flues choose between a set of small caps or one large multi flue cover for a cleaner look.
The chimney crown is placed atop the masonry chimney as a form of protection against the weather.
The copper chase cover covers the entire top of your chimney.
Follow the steps on how to waterproof a chimney.
This serves two purposes.
Typically copper chase covers are used in place of stainless steel for aeshtetic purposes.
First without the barrier the cement will just run down the chimney structure filling the airspace between the flue and the masonry walls.
The chimney crown which can also be referred to as a chimney wash is a large slab that covers the top opening of the chimney.