Metal Chimney Crown

First without the barrier the cement will just run down the chimney structure filling the airspace between the flue and the masonry walls.

Metal chimney crown.

Then lay sheet metal or cement board across the metal supports to form a thin bond break between the chimney crown and the masonry walls. As crowns withstand a lot of abuse they need to be made out of a solid material. Generally made of metal they are installed just inside the chimney. The copper chase cover covers the entire top of your chimney.

Typically copper chase covers are used in place of stainless steel for aeshtetic purposes. There are also decorative models such as copper caps which are more costly but require less maintenance. The most common are metal which are available in aluminum copper and stainless steel. This serves two purposes.

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. Unlike a chimney cap which is typically made of metal and merely covers the opening to the flue the chimney crown covers the entire top of the chimney. If your chimney has multiple flues choose between a set of small caps or one large multi flue cover for a cleaner look. Most commonly chimney crowns are made of poured concrete and free from cracks and crumbling.

Remove the squirrel.