Metal Chimney Crown

This serves two purposes.

Metal chimney crown.

If your chimney has multiple flues choose between a set of small caps or one large multi flue cover for a cleaner look. 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. 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. The chimney crown is placed atop the masonry chimney as a form of protection against the weather.

Remove the squirrel. Most commonly chimney crowns are made of poured concrete and free from cracks and crumbling. 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. First without the barrier the cement will just run down the chimney structure filling the airspace between the flue and the masonry walls.

The most common are metal which are available in aluminum copper and stainless steel. 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. Generally made of metal they are installed just inside the chimney. Typically copper chase covers are used in place of stainless steel for aeshtetic purposes.

As crowns withstand a lot of abuse they need to be made out of a solid material.