The chimney cap is a protective covering or housing for the top of the chimney intended to prevent the entry of rain, snow, animals, birds and to help prevent downdrafts. The crown is the cement like material at the top of the chimney that marries the brickwork with the flue tile. The crown’s primary function is to shed water away from the chimney to protect the brickwork.
Chimneys are constantly exposed to the elements, and water is a major factor. Missing or eroded mortar joints and loose brick are other symptoms that chimney repair is needed to prevent further deterioration. Tuckpointing, rebuilding and masonry repairs are some solutions to maintaining the safety and integrity of your chimney.
The vertical passageway up the inside of the chimney is the flue. The damper is often called the flue, but the flue is the passageway. Clay flue tiles are the most common material used to line masonry chimneys when built.
Similar to the Fireplace Flue, the gas flue is the passageway to exhaust the furnace and/or hot water heater in most homes. Liner types can vary.
The damper is the plate that closes the fireplace flue when the fireplace is not in use.
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